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In high-speed fluid dynamics, base pressure controls find many engineering applications, such as in the automobile and defense industries. Several studies have been reported on flow control with sudden expansion duct. Passive control was found to be more beneficial in the last four decades and is used in devices such as cavities, ribs, aerospikes, etc., but these need additional control mechanics and objects to control the flow. Therefore, in the last two decades, the active control method has been used via a microjet controller at the base region of the suddenly expanded duct of the convergent–divergent (CD) nozzle to control the flow, which was found to be a cost-efficient and energy-saving method. Hence, in this paper, a systemic literature review is conducted to investigate the research gap by reviewing the exhaustive work on the active control of high-speed aerodynamic flows from the nozzle as the major focus. Additionally, a basic idea about the nozzle and its configuration is discussed, and the passive control method for the control of flow, jet and noise are represented in order to investigate the existing contributions in supersonic speed applications. A critical review of the last two decades considering the challenges and limitations in this field is expressed. As a contribution, some major and minor gaps are introduced, and we plot the research trends in this field. As a result, this review can serve as guidance and an opportunity for scholars who want to use an active control approach via microjets for supersonic flow problems.
Abdul Aabid; Sher Khan; Muneer Baig. A Critical Review of Supersonic Flow Control for High-Speed Applications. Applied Sciences 2021, 11, 6899 .
AMA StyleAbdul Aabid, Sher Khan, Muneer Baig. A Critical Review of Supersonic Flow Control for High-Speed Applications. Applied Sciences. 2021; 11 (15):6899.
Chicago/Turabian StyleAbdul Aabid; Sher Khan; Muneer Baig. 2021. "A Critical Review of Supersonic Flow Control for High-Speed Applications." Applied Sciences 11, no. 15: 6899.
Base pressure is a crucial component in the measurement of flow parameters in a high-speed aerodynamic flow. In this paper, the microjets impact as a control mechanism is experimentally tested for the nozzles with abrupt expansion at supersonic Mach in an axisymmetric conduit. The flow regulation mechanism is placed at a 90-degree interval in the shape of an orifice of 0.5 mm in radius along the nozzle’s exit diameter, which generates jets at sonic Mach numbers. The flow constraints studied are inertia level (Mach number), expansion level (NPR), and the geometric parameters considered are the pipe’s length (L/D). These three relevant parameters were selected for design of experiments (DOE). In the management of base pressure, this analysis’s primary objective is to evaluate the parameters influencing the flow. The experiments were carried out in two ways: without and with microjets. For the DOE, an L27 orthogonal series, polynomial expression, analysis of variance, and predicted plots were carried out to test the experimental findings. The established prototypes are statistically appropriate and achieved when making precise projections for all the cases. According to the present results, the L/D ratio for a given parameter is the most critical parameter influencing the maximum increase or decrease in the base pressure.
Turki Al-Khalifah; Abdul Aabid; Sher Afghan Khan; Muhammad Hanafi Bin Azami; Muneer Baig. Response surface analysis of nozzle parameters at supersonic flow through microjets. Australian Journal of Mechanical Engineering 2021, 1 -16.
AMA StyleTurki Al-Khalifah, Abdul Aabid, Sher Afghan Khan, Muhammad Hanafi Bin Azami, Muneer Baig. Response surface analysis of nozzle parameters at supersonic flow through microjets. Australian Journal of Mechanical Engineering. 2021; ():1-16.
Chicago/Turabian StyleTurki Al-Khalifah; Abdul Aabid; Sher Afghan Khan; Muhammad Hanafi Bin Azami; Muneer Baig. 2021. "Response surface analysis of nozzle parameters at supersonic flow through microjets." Australian Journal of Mechanical Engineering , no. : 1-16.
In the last three decades, smart materials have become popular. The piezoelectric materials have shown key characteristics for engineering applications, such as in sensors and actuators for industrial use. Because of their excellent mechanical-to-electrical and vice versa energy conversion properties, piezoelectric materials with high piezoelectric charge and voltage coefficient have been tested in renewable energy applications. The fundamental component of the energy harvester is the piezoelectric material, which, when subjected to mechanical vibrations or applied stress, induces the displaced ions in the material and results in a net electric charge due to the dipole moment of the unit cell. This phenomenon builds an electric potential across the material. In this review article, a detailed study focused on the piezoelectric energy harvesters (PEH’s) is reported. In addition, the fundamental idea about piezoelectric materials, along with their modeling for various applications, are detailed systematically. Then a summary of previous studies based on PEH’s other applications is listed, considering the technical aspects and methodologies. A discussion has been provided as a critical review of current challenges in this field. As a result, this review can provide a guideline for the scholars who want to use PEH’s for their research.
Abdul Aabid; Abdul Raheman; Yasser Ibrahim; Asraar Anjum; Meftah Hrairi; Bisma Parveez; Nagma Parveen; Jalal Mohammed Zayan. A Systematic Review of Piezoelectric Materials and Energy Harvesters for Industrial Applications. Sensors 2021, 21, 4145 .
AMA StyleAbdul Aabid, Abdul Raheman, Yasser Ibrahim, Asraar Anjum, Meftah Hrairi, Bisma Parveez, Nagma Parveen, Jalal Mohammed Zayan. A Systematic Review of Piezoelectric Materials and Energy Harvesters for Industrial Applications. Sensors. 2021; 21 (12):4145.
Chicago/Turabian StyleAbdul Aabid; Abdul Raheman; Yasser Ibrahim; Asraar Anjum; Meftah Hrairi; Bisma Parveez; Nagma Parveen; Jalal Mohammed Zayan. 2021. "A Systematic Review of Piezoelectric Materials and Energy Harvesters for Industrial Applications." Sensors 21, no. 12: 4145.
Lightweight composite materials have recently been recognized as appropriate materials have been adopted in many industrial applications because of their versatility. The present research recognizes the inclusion of ceramics such as Gr and B4C in manufacturing AMMCs through stir casting. Prepared composites were tested for hardness and wear behaviour. The tests’ findings revealed that the reinforced matrix was harder (60%) than the un-reinforced alloy because of the increased ceramic phase. The rising content of B4C and Gr particles led to continuous improvements in wear resistance. The microstructure and worn surface were observed through SEM (Scanning electron microscope) and revealed the formation of mechanically mixed layers of both B4C and Gr, which served as the effective insulation surface and protected the test sample surface from the steel disc. With the rise in the content of B4C and Gr, the weight loss declined, and significant wear resistance was achieved at 15 wt.% B4C and 10 wt.% Gr. A response surface analysis for the weight loss was carried out to obtain the optimal objective function. Artificial neural network methodology was adopted to identify the significance of the experimental results and the importance of the wear parameters. The error between the experimental and ANN results was found to be within 1%.
Ballupete Sharath; Channarayapattana Venkatesh; Asif Afzal; Navid Aslfattahi; Abdul Aabid; Muneer Baig; Bahaa Saleh. Multi Ceramic Particles Inclusion in the Aluminium Matrix and Wear Characterization through Experimental and Response Surface-Artificial Neural Networks. Materials 2021, 14, 2895 .
AMA StyleBallupete Sharath, Channarayapattana Venkatesh, Asif Afzal, Navid Aslfattahi, Abdul Aabid, Muneer Baig, Bahaa Saleh. Multi Ceramic Particles Inclusion in the Aluminium Matrix and Wear Characterization through Experimental and Response Surface-Artificial Neural Networks. Materials. 2021; 14 (11):2895.
Chicago/Turabian StyleBallupete Sharath; Channarayapattana Venkatesh; Asif Afzal; Navid Aslfattahi; Abdul Aabid; Muneer Baig; Bahaa Saleh. 2021. "Multi Ceramic Particles Inclusion in the Aluminium Matrix and Wear Characterization through Experimental and Response Surface-Artificial Neural Networks." Materials 14, no. 11: 2895.
A lightweight, highly corrosive resistant, and high-strength wrought alloy in the aluminum family is the Aluminium 8006 alloy. The AA8006 alloy can be formed, welded, and adhesively bonded. However, the recommended welding methods such as laser, TIG (Tungsten Inert Gas welding), and ultrasonic are more costly. This investigation aims to reduce the cost of welding without compromising joint quality by means of friction stir welding. The aluminum alloy-friendly reinforcement agent zirconia is utilized as particles during the weld to improve the performance of the newly identified material AA8006 alloy in friction stir welding (FSW). The objectives of this research are to identify the level of process parameters for the friction stir welding of AA8006 to reduce the variability by the trial-and-error experimental method, thereby reducing the number of samples needing to be characterized to optimize the process parameters. To enhance the quality of the weld, the friction stir processing concept will be adapted with zirconia reinforcement during welding. The friction stir-processed samples were investigated regarding their mechanical properties such as tensile strength and Vickers microhardness. The welded samples were included in the corrosion testing to ensure that no foreign corrosive elements were included during the welding. The quality of the weld was investigated in terms of its surface morphology, including aspects such as the dispersion of reinforced particles on the welded area, the incorporation of foreign elements during the weld, micro defects or damage, and other notable changes through scanning electron microscopy analysis. The process of 3D profilometry was employed to perform optical microscopy investigation on the specimens inspected to ensure their surface quality and finish. Based on the outcomes, the optimal process parameters are suggested. Future directions for further investigation are highlighted.
Thanikodi Sathish; Abdul Kaladgi; V. Mohanavel; K. Arul; Asif Afzal; Abdul Aabid; Muneer Baig; Bahaa Saleh. Experimental Investigation of the Friction Stir Weldability of AA8006 with Zirconia Particle Reinforcement and Optimized Process Parameters. Materials 2021, 14, 2782 .
AMA StyleThanikodi Sathish, Abdul Kaladgi, V. Mohanavel, K. Arul, Asif Afzal, Abdul Aabid, Muneer Baig, Bahaa Saleh. Experimental Investigation of the Friction Stir Weldability of AA8006 with Zirconia Particle Reinforcement and Optimized Process Parameters. Materials. 2021; 14 (11):2782.
Chicago/Turabian StyleThanikodi Sathish; Abdul Kaladgi; V. Mohanavel; K. Arul; Asif Afzal; Abdul Aabid; Muneer Baig; Bahaa Saleh. 2021. "Experimental Investigation of the Friction Stir Weldability of AA8006 with Zirconia Particle Reinforcement and Optimized Process Parameters." Materials 14, no. 11: 2782.
With the breadth of applications and analysis performed over the last few decades, it would not be an exaggeration to call piezoelectric materials “the top of the crop” of smart materials. Piezoelectric materials have emerged as the most researched materials for practical applications among the numerous smart materials. They owe it to a few main reasons, including low cost, high bandwidth of service, availability in a variety of formats, and ease of handling and execution. Several authors have used piezoelectric materials as sensors and actuators to effectively control structural vibrations, noise, and active control, as well as for structural health monitoring, over the last three decades. These studies cover a wide range of engineering disciplines, from vast space systems to aerospace, automotive, civil, and biomedical engineering. Therefore, in this review, a study has been reported on piezoelectric materials and their advantages in engineering fields with fundamental modeling and applications. Next, the new approaches and hypotheses suggested by different scholars are also explored for control/repair methods and the structural health monitoring of engineering structures. Lastly, the challenges and opportunities has been discussed based on the exhaustive literature studies for future work. As a result, this review can serve as a guideline for the researchers who want to use piezoelectric materials for engineering structures.
Abdul Aabid; Bisma Parveez; Abdul Raheman; Yasser Ibrahim; Asraar Anjum; Meftah Hrairi; Nagma Parveen; Jalal Mohammed Zayan. A Review of Piezoelectric Material-Based Structural Control and Health Monitoring Techniques for Engineering Structures: Challenges and Opportunities. Actuators 2021, 10, 101 .
AMA StyleAbdul Aabid, Bisma Parveez, Abdul Raheman, Yasser Ibrahim, Asraar Anjum, Meftah Hrairi, Nagma Parveen, Jalal Mohammed Zayan. A Review of Piezoelectric Material-Based Structural Control and Health Monitoring Techniques for Engineering Structures: Challenges and Opportunities. Actuators. 2021; 10 (5):101.
Chicago/Turabian StyleAbdul Aabid; Bisma Parveez; Abdul Raheman; Yasser Ibrahim; Asraar Anjum; Meftah Hrairi; Nagma Parveen; Jalal Mohammed Zayan. 2021. "A Review of Piezoelectric Material-Based Structural Control and Health Monitoring Techniques for Engineering Structures: Challenges and Opportunities." Actuators 10, no. 5: 101.
The current study explores the effects of geometrical shapes of the infills on the 3D printed polylactic acid (PLA) plastic on the tensile properties. For this purpose, by utilizing an accessible supply desktop printer, specimens of diamond, rectangular, and hexagonal infill patterns were produced using the fused filament fabrication (FFF) 3D printing technique. Additionally, solid samples were printed for comparison. The printed tensile test specimens were conducted at environmental temperature, Ta of 23 °C and crosshead speed, VC.H of 5 mm/min. Mainly, this study focuses on investigating the percentage infill with respect to the cross-sectional area of the investigated samples. The mechanical properties, i.e., modulus of toughness, ultimate tensile stress, yield stress, and percent elongation, were explored for each sample having a different geometrical infill design. The test outcomes for each pattern were systematically compared. To further validate the experimental results, a computer simulation using finite element analysis was also performed and contrasted with the experimental tensile tests. The experimental results mainly suggested a brittle behavior for solidly infilled specimen, while rectangular, diamond, and hexagonal infill patterns showed ductile-like behavior (fine size and texture of infills). This brittleness may be due to the relatively higher infill density results that led to the high bonding adhesion of the printed layers, and the size and thickness effects of the solid substrate. It made the solidly infilled specimen structure denser and brittle. Among all structures, hexagon geometrical infill showed relative improvement in the mechanical properties (highest ultimate tensile stress and modulus values 1759.4 MPa and 57.74 MPa, respectively) compared with other geometrical infills. Therefore, the geometrical infill effects play an important role in selecting the suitable mechanical property’s values in industrial applications.
Tanner Harpool; Ibrahim Alarifi; Basheer Alshammari; Abdul Aabid; Muneer Baig; Rizwan Malik; Ahmed Mohamed Sayed; Ramazan Asmatulu; Tarek El-Bagory. Evaluation of the Infill Design on the Tensile Response of 3D Printed Polylactic Acid Polymer. Materials 2021, 14, 2195 .
AMA StyleTanner Harpool, Ibrahim Alarifi, Basheer Alshammari, Abdul Aabid, Muneer Baig, Rizwan Malik, Ahmed Mohamed Sayed, Ramazan Asmatulu, Tarek El-Bagory. Evaluation of the Infill Design on the Tensile Response of 3D Printed Polylactic Acid Polymer. Materials. 2021; 14 (9):2195.
Chicago/Turabian StyleTanner Harpool; Ibrahim Alarifi; Basheer Alshammari; Abdul Aabid; Muneer Baig; Rizwan Malik; Ahmed Mohamed Sayed; Ramazan Asmatulu; Tarek El-Bagory. 2021. "Evaluation of the Infill Design on the Tensile Response of 3D Printed Polylactic Acid Polymer." Materials 14, no. 9: 2195.
A Nozzle is a mechanical device that uses pressure energy and fluid enthalpy to increase the outflow velocity and control fluid flow direction. To obtain the nozzle duct's shock pattern, the flow inside the nozzle must be supersonic with a Mach number greater than one. Experimentally, the shock pattern is obtained for a nozzle with a Mach number 2 and nozzle pressure ratio (NPR) equivalent to 7 and below. For Mach M = 2, the needed NPR is equal to 7.82 for correct expansion.. When the NPR is greater than 7.82, flow from the nozzles is under-expanded. For NPR less than 7.72 the flow from the nozzle is over-expanded. In this paper, the computational fluid mechanics (CFD) technique was used to simulate the nozzle flow based on the experimental investigation. A two-dimensional transient compressible flow of air through a supersonic nozzle was simulated using ANSYS fluent software. A time-dependent flow using the density-based implicit solver was useds to analyze the simulation results. The results illustrate that the CFD technique simulates the fluid flows and the formation of shock in a duct and gives useful information about fluid dynamics analysis.
Sher Afghan Khan; Omar Mohamed Ibrahim; Abdul Aabid. CFD analysis of compressible flows in a convergent-divergent nozzle. Materials Today: Proceedings 2021, 46, 2835 -2842.
AMA StyleSher Afghan Khan, Omar Mohamed Ibrahim, Abdul Aabid. CFD analysis of compressible flows in a convergent-divergent nozzle. Materials Today: Proceedings. 2021; 46 ():2835-2842.
Chicago/Turabian StyleSher Afghan Khan; Omar Mohamed Ibrahim; Abdul Aabid. 2021. "CFD analysis of compressible flows in a convergent-divergent nozzle." Materials Today: Proceedings 46, no. : 2835-2842.
In high-speed fluid dynamics, the control of base pressure finds many engineering applications such as automobile industry and defense applications. Several studies have been reported on passive control using devices like cavities, ribs, aerospikes, etc. in the last three decades. Therefore, the present research focuses on active control uses the microjets in the form of an orifice of a 1 mm diameter to inject the air in the base flows and located at base area of 90° intervals as a control mechanism. Since the air is drawn from the main settling chamber, the NPR will be the same as the respective NPRs used for tests. Experiments were conducted in the presence and absence of the microjets for area ratio 3.24 and L/D ratios from 10 to 1 at Mach numbers 1.87, 2.2, and 2.58. The parameters were optimized using the design of experiments (DOE) approach. Three parameters have been selected for the flow and the DOE. An L9 orthogonal array, multiple linear regression, and confirmation tests were performed to analyze the experimental results. The developed models are statistically suitable and accomplished in producing reasonable predictions for both cases. Besides, a computational fluid dynamics method has been utilized and validated by the experimental results. The k–Ɛ turbulent model is used to analyze the simulation results. According to the present results, it is evident that for a given parameter, an L/D ratio is the most significant impacting to a maximum increment or decrement of a base pressure.
Abdul Aabid; Sher Afghan Khan. Investigation of High-Speed Flow Control from CD Nozzle Using Design of Experiments and CFD Methods. Arabian Journal for Science and Engineering 2020, 46, 2201 -2230.
AMA StyleAbdul Aabid, Sher Afghan Khan. Investigation of High-Speed Flow Control from CD Nozzle Using Design of Experiments and CFD Methods. Arabian Journal for Science and Engineering. 2020; 46 (3):2201-2230.
Chicago/Turabian StyleAbdul Aabid; Sher Afghan Khan. 2020. "Investigation of High-Speed Flow Control from CD Nozzle Using Design of Experiments and CFD Methods." Arabian Journal for Science and Engineering 46, no. 3: 2201-2230.
This article investigates the wall pressure dissemination on a circular duct when the flow is exhausted into a CD nozzle. This study aims at to scrutinize the static pressure on the duct wall and its growth when the control is activated. The microjets are employed at the base at pitch circle radius (PCR) of 6.5 mm, and the radius of the microjets are 0.5 mm. The Mach numbers and the duct area ratio used are 2.56, Mach (M) 2 and 3. The lift to diameter ratio (L/D) and nozzle pressure ratio (NPR) of the study were from L/D = 10 to 1 and NPRs from 3 to 11. The NPRs tested were at different expansion level for M = 2. The oscillations in the duct flow field are seen when they are under expanded, and this trend continues for the total length of pipe. When the nozzles are ideally expanded the oscillations are absent as at this NPR only the Mach waves will be present. Similar trends are also seen at NPR 3 as well as whenever there is an adverse pressure gradient at Mach 2. With the decline in pipe length, the wavy nature of the flow is getting died out, and pressure recovery is smooth. The duct length and the backpressure has a crucial role to play in dictating the magnitude of wall pressure. L/D = 2 seems to be sufficient for M = 2 to continue to remain committed with the pipe, whereas for M = 3 the lowest duct size required is L/D = 4.
Abdul Aabid; Sher Afghan Khan. Determination of wall pressure flows at supersonic Mach numbers. Materials Today: Proceedings 2020, 38, 2347 -2352.
AMA StyleAbdul Aabid, Sher Afghan Khan. Determination of wall pressure flows at supersonic Mach numbers. Materials Today: Proceedings. 2020; 38 ():2347-2352.
Chicago/Turabian StyleAbdul Aabid; Sher Afghan Khan. 2020. "Determination of wall pressure flows at supersonic Mach numbers." Materials Today: Proceedings 38, no. : 2347-2352.
In aerodynamics study, whenever there is a flat/blunt face, it will result in the maximum drag effect on the flat body. In these types of problems, the splitter plates have found a significant role in reducing the drag force. The splitter plate will separate/bifurcate the flow at the front face of the body. The present study aims to find the fluid flows over a body by varying the length of the splitter plate. In the study, the pressure and Mach number effects near the surface of the body. Also, it is crucial to study the fluid flows for higher velocity. A two-dimensional rectangular bluff body of a 50x60 mm dimension with a splitter plate controller is analyzed using a rectangular fluid domain—the splitter plate located at the front face of the body as a passive control method. Further study of this article, the parametric effect of the splitter plate with respect to the height of the body is considered. The ANSYS Fluent is used to simulate the results using a pressure-based solver because the flow is incompressible. The k-e turbulent model is used to simulate the outcomes and validated them with the wind tunnel experimental results. Based on the present results, it has been realized that the existing model can be utilized for the study of fluid flow over a bluff body. The simulations result in an essential effect of the upstream splitter plate on the separating the flows with a turbulent flow. Results indicate that the splitter plate is useful in separating the flow, which results in reducing the drag.
Azmil Afifi; Abdul Aabid; Sher Afghan Khan. Numerical investigation of splitter plate effect on bluff body using finite volume method. Materials Today: Proceedings 2020, 38, 2181 -2190.
AMA StyleAzmil Afifi, Abdul Aabid, Sher Afghan Khan. Numerical investigation of splitter plate effect on bluff body using finite volume method. Materials Today: Proceedings. 2020; 38 ():2181-2190.
Chicago/Turabian StyleAzmil Afifi; Abdul Aabid; Sher Afghan Khan. 2020. "Numerical investigation of splitter plate effect on bluff body using finite volume method." Materials Today: Proceedings 38, no. : 2181-2190.
The repair of aircraft structures using composite material patches are well known in aerospace industries. In the present work composite patch bonded with a superglue over a cracked rectangular plate under uniform uniaxial tensile stress is considered. A three-dimensional finite element method was used to define the stress intensity factor for a repaired plate at mode-I crack propagation. Later, the design of experiments method was used to investigate the parametric effect on repair structure in order to achieve the optimum solution. The size and mechanical properties of the adhesive bond and composite patch that affect the repair quality are considered as the parameters for reduction in stress intensity factor. The outcome of this work will serve as a guideline for designer to improve the repair quality and durability.
Abdul Aabid; Meftah Hrairi; Jaffar Syed Mohamed Ali. Optimization of composite patch repair for center-cracked rectangular plate using design of experiments method. Materials Today: Proceedings 2020, 27, 1713 -1719.
AMA StyleAbdul Aabid, Meftah Hrairi, Jaffar Syed Mohamed Ali. Optimization of composite patch repair for center-cracked rectangular plate using design of experiments method. Materials Today: Proceedings. 2020; 27 ():1713-1719.
Chicago/Turabian StyleAbdul Aabid; Meftah Hrairi; Jaffar Syed Mohamed Ali. 2020. "Optimization of composite patch repair for center-cracked rectangular plate using design of experiments method." Materials Today: Proceedings 27, no. : 1713-1719.
Crack propagation until fracture is an important criterion to predict a structure‘s service life. In order to increase the latter, the cracked component needs to be repaired or replaced. In the present study, a finite element analysis has been carried out to investigate the effects of adhesive thickness, patch thickness and crack length on the passive repair performance of a center-cracked rectangular aluminum plate under mode-I loading condition using an ANSYS package. A comprehensive parametric study shows that the stress intensity factor is influenced by the patch thickness, patch size, adhesive material, and adhesive thickness. ABSTRAK: Penyebaran retak sehingga patah adalah kriteria penting bagi menjangka hayat struktur. Bagi memanjangkan jangka hayat struktur, komponen keretakan perlu dibaik pulih atau diganti. Kajian ini telah menjalankan analisis elemen tak terhingga bagi mengetahui kesan ketebalan pelekat, ketebalan tampalan dan panjang retak pada bahagian keretakan tengah plat petak aluminium yang dibaiki secara pasif, menggunakan pakej ANSYS di bawah beban mod-I. Kajian parametrik yang menyeluruh menunjukkan faktor tekanan intensif dipengaruhi oleh ketebalan tampalan, saiz tampalan, bahan pelekat dan ketebalan pelekat.
Abdul Aabid; Meftah Hrairi; Jaffar Syed Mohammed Ali; Ahmed Abuzaid. EFFECT OF BONDED COMPOSITE PATCH ON THE STRESS INTENSITY FACTORS FOR A CENTER-CRACKED PLATE. IIUM Engineering Journal 2019, 20, 211 -221.
AMA StyleAbdul Aabid, Meftah Hrairi, Jaffar Syed Mohammed Ali, Ahmed Abuzaid. EFFECT OF BONDED COMPOSITE PATCH ON THE STRESS INTENSITY FACTORS FOR A CENTER-CRACKED PLATE. IIUM Engineering Journal. 2019; 20 (2):211-221.
Chicago/Turabian StyleAbdul Aabid; Meftah Hrairi; Jaffar Syed Mohammed Ali; Ahmed Abuzaid. 2019. "EFFECT OF BONDED COMPOSITE PATCH ON THE STRESS INTENSITY FACTORS FOR A CENTER-CRACKED PLATE." IIUM Engineering Journal 20, no. 2: 211-221.
This paper presents numerical study was undertaken to identify the use of the micro-jets to regulate the pressure in the region from two-dimensional convergent-divergent (CD) Nozzle. At the exit of the divergent nozzle in the base region 1 mm of two micro-jets orifice diameter has been arranged at ninety degrees at pcd 13 mm to control base pressure. The inertia level at the inlet to suddenly expanded duct was 1.87. The micro-jets are suddenly expanded into a two-dimensional planar area ratio of 3.24. The L/D of the duct was 1, 2, 4, 5, 6, 8 and 10. The total wall pressure distribution from inlet to the outlet too was recorded. The results indicate that the micro-jets can oblige as the effective regulators of the pressure in the base area. The duct wall pressure field is not negatively affected by the dynamic control. Nozzles were operated with the NPR in the range from 3 to 11. The results show that we can fix the flow parameter which will result in the maximum gain in the base pressure, velocity and temperature. The convergent-divergent nozzle geometry has been modeled and simulated employing turbulence models: K-ε standard wall function turbulence model from the code was validated with the commercial computational fluid dynamics.
Ambareen Khan; Abdul Aabid; S A. Khan. CFD analysis of convergent-divergent nozzle flow and base pressure control using micro-JETS. International Journal of Engineering & Technology 2018, 7, 232 -235.
AMA StyleAmbareen Khan, Abdul Aabid, S A. Khan. CFD analysis of convergent-divergent nozzle flow and base pressure control using micro-JETS. International Journal of Engineering & Technology. 2018; 7 (3.29):232-235.
Chicago/Turabian StyleAmbareen Khan; Abdul Aabid; S A. Khan. 2018. "CFD analysis of convergent-divergent nozzle flow and base pressure control using micro-JETS." International Journal of Engineering & Technology 7, no. 3.29: 232-235.
Coanda effect is used in several engineering applications with distinctive designs and structures. It is also applied in aircrafts flying at low speeds for a comfortable ride. In this paper, we have designed and modelled Coanda effect in terms of a flying saucer. The fabrication was done by means of structural and electronic components. Electrical motor was used as a propeller to take off and land vertically (VTOL) along with hovering capability. The rotor disc diameter is smaller than the bulbous body unlike a helicopter which makes to fly very stable. Control flaps were used to regulate the path by altering the flow over the streamlined body. The model was then tested with a remote control. Numerical Simulation of the tesla turbine was done using ANSYS 14.5 software and displacements were obtained by applying different forces on designed model. CATIA V5 was used to analyse the shaft of the model to get minimum value of torque at which the shaft starts to deform.
Abdul Aabid; S. A. Khan. Design and Fabrication of Flying Saucer Utilizing Coanda Effect. IOP Conference Series: Materials Science and Engineering 2018, 370, 012060 .
AMA StyleAbdul Aabid, S. A. Khan. Design and Fabrication of Flying Saucer Utilizing Coanda Effect. IOP Conference Series: Materials Science and Engineering. 2018; 370 (1):012060.
Chicago/Turabian StyleAbdul Aabid; S. A. Khan. 2018. "Design and Fabrication of Flying Saucer Utilizing Coanda Effect." IOP Conference Series: Materials Science and Engineering 370, no. 1: 012060.
In the field of Aerospace Propulsion technology, material required to resist the maximum temperature. In this paper, using thermal barrier coatings (TBCs) method in gas turbine blade is used to protect hot section component from high-temperature effect to extend the service life and reduce the maintenance costs. The TBCs which include three layers of coating corresponding initial coat is super alloy-INCONEL 718 with 1 mm thickness, bond coat is Nano-structured ceramic-metallic composite-NiCoCrAIY with 0.15 mm thickness and top coat is ceramic composite-La2Ce2O7 with 0.09 mm thickness on the nickel alloy turbine blade which in turn increases the strength, efficiency and life span of the blades. Modeling a gas turbine blade using CATIA software and determining the amount of heat transfer on thermal barrier coated blade using ANSYS software has been performed. Thermal stresses and effects of different TBCs blade base alloys are considered using CATIA and ANSYS.
Abdul Aabid; S. A. Khan. Optimization of Heat Transfer on Thermal Barrier Coated Gas Turbine Blade. IOP Conference Series: Materials Science and Engineering 2018, 370, 012022 .
AMA StyleAbdul Aabid, S. A. Khan. Optimization of Heat Transfer on Thermal Barrier Coated Gas Turbine Blade. IOP Conference Series: Materials Science and Engineering. 2018; 370 (1):012022.
Chicago/Turabian StyleAbdul Aabid; S. A. Khan. 2018. "Optimization of Heat Transfer on Thermal Barrier Coated Gas Turbine Blade." IOP Conference Series: Materials Science and Engineering 370, no. 1: 012022.
Abdul Aabid; Mohammed Ali Murtuza; Arepally Shushrutha; Mite Moodabidri Mangalore. Optimization of Longitudinal Stiffening Members of a Fuselage Structure. International Journal of Engineering Research and 2015, V4, 1 .
AMA StyleAbdul Aabid, Mohammed Ali Murtuza, Arepally Shushrutha, Mite Moodabidri Mangalore. Optimization of Longitudinal Stiffening Members of a Fuselage Structure. International Journal of Engineering Research and. 2015; V4 (09):1.
Chicago/Turabian StyleAbdul Aabid; Mohammed Ali Murtuza; Arepally Shushrutha; Mite Moodabidri Mangalore. 2015. "Optimization of Longitudinal Stiffening Members of a Fuselage Structure." International Journal of Engineering Research and V4, no. 09: 1.