Dr. Laith S Sabri

University of Technology- Iraq, Baghdad, Baghdād, Iraq

Dr. Laith S Sabri

University of Technology- Iraq, Baghdad, Baghdād, Iraq

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Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 September 2018 in International Journal of Multiphase Flow

Journal Article

Impact of heat-exchanging tube configurations on the gas holdup distribution in bubble columns using gamma-ray computed tomography

Abbas J. Sultan

Laith S Sabri

Muthanna Al-Dahhan

1 September 2019 in Chemical Engineering Research and Design

Journal Article

Investigating the cross-sectional gas holdup distribution in a split internal-loop photobioreactor during microalgae culturing using a sophisticated computed tomography (CT) technique

Laith S Sabri

Abbas J. Sultan

Muthanna H. Al-Dahhan

12 May 2022 in Chemengineering

Journal Article

Experimental Investigation and Computational Fluid Dynamic Simulation of Hydrodynamics of Liquid–Solid Fluidized Beds

The present study provides and examines an experimental and CFD simulation to predict and accurately quantify the individual phase holdup. The experimental findings demonstrated that the increase of solid beads has a significant influence on the (U_mf), as comparatively small glass beads particles require a low (U_mf) value, which tends to increase as the diameter of the beads increases. Besides that, the expansion ratio is proportional to the velocity of the liquid. Even though, the relationship becomes inversely proportional to the diameter of the beads. The liquid holdup was found to increase with increasing liquid velocity, however, the solid holdup decreased. The Eulerian–Eulerian granular multiphase flow technique was used to predict the overall performance of the liquid–solid fluidized beds (LSFBs). There was a good agreement between the experimental results and the dynamic properties of liquid–solid flows obtained from the CFD simulation, which will facilitate future simulation studies of liquid–solid fluidized beds. This work has further improved the understanding and knowledge of CFD simulation of such a system at different parameters. Furthermore, understanding the hydrodynamics features within the two-phase fluidization bed, as well as knowing the specific features, is essential for good system design, enabling the systems to perform more effectively.

13 October 2020 in Journal of Chemical Technology & Biotechnology

Journal Article

Local volumetric mass transfer coefficient estimation for Scenedesmus microalgae culture in a cylindrical airlift photobioreactor

Aastha Ojah

Laith S Sabri

Muthanna H. Aldahhan

1 January 2024 in Fluid Dynamics & Materials Processing

Journal Article

Flow Regimes in Bubble Columns with and without Internals: A Review

Ayat N. Mahmood

Amer A. Abdulrahman

Laith S Sabri

Abbas J. Sultan

Hasan Shakir Majdi

Muthanna H. Al-Dahhan

Hydrodynamics characterization in terms of flow regime behavior is a crucial task to enhance the design of bubble column reactors and scaling up related methodologies. This review presents recent studies on the typical flow regimes established in bubble columns. Some effort is also provided to introduce relevant definitions pertaining to this field, namely, that of “void fraction” and related (local, chordal, cross-sectional and volumetric) variants. Experimental studies involving different parameters that affect design and operating conditions are also discussed in detail. In the second part of the review, the attention is shifted to cases with internals of various types (perforated plates, baffles, vibrating helical springs, mixers, and heat exchanger tubes) immersed in the bubble columns. It is shown that the presence of these elements has a limited influence on the global column hydrodynamics. However, they can make the homogeneous flow regime more stable in terms of transition gas velocity and transition holdup value. The last section is used to highlight gaps which have not been filled yet and future directions of investigation.

14 September 2023 in Chemengineering

Journal Article

Enhancing Heat Transfer Performance in Simulated Fischer–Tropsch Fluidized Bed Reactor through Tubes Ends Modifications

Fluidized bed reactors are essential in a wide range of industrial applications, encompassing processes such as Fischer–Tropsch synthesis and catalytic cracking. The optimization of performance and reduction in energy consumption in these reactors necessitate the use of efficient heat transfer mechanisms. The present work examines the considerable impact of tube end geometries, superficial gas velocity, and radial position on heat transfer coefficients within fluidized bed reactors. It was found that the tapered tube end configurations have been empirically proven to improve energy efficiency in fluidized bed reactors significantly. For example, at a superficial gas velocity of 0.4 m/s, the tapered end form’s local heat transfer coefficient (LHTC) demonstrated a significant 20% enhancement compared to the flat end shape. The results and findings of this work make a valuable contribution to the advancement of complex models, enhance the efficiency of fluidized bed reactor processes, and encourage further investigation into novel tube geometries.

About Me

Laith Salim Sabri received his B.S. in University of Saddam and the first M.S. in chemical engineering from the University of Al-Nahrian Baghdad, Iraq. Before joining Missouri University of Science and Technology (Missouri S&T), Laith was a faculty member in the Chemical Engineering Department at the University of Technology, Baghdad, Iraq from 2006 until 2013, where he was awarded a scholarship by The Ministry of Education and Higher Researcher in Iraq to study for his Ph.D. in chemical engineering. He started at Missouri S&T during the Fall semester of 2013 to work under the supervision of Dr. Muthanna Al-Dahhan. He obtained his second M.S. in chemical engineering from Missouri S&T in May 2015. He has received several awards and recognitions for his research, including the Travel Award for the 24th International Symposium on Chemical Reaction Engineering (ISCRE 24, 2016), and has won the third place prize in the poster competition for ISCRE 24, the Best Poster Award for Graduate Research Showcase Spring, Missouri S&T (2017), and the Top Three Posters in Young Researcher Competition, Algae Biomass Summit (2017). Laith is a member of AIChE and Society of Chemical Industry (SCI). He is a fellow of Tau Beta Pi engineering honor society. His research activities include many publications and over 45 national and international conference presentations. Laith received his Ph.D. in chemical engineering from Missouri S&T in Dec 2018.

Dr. Laith S Sabri

Dr. Laith S Sabri

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Representative Publications

About Me