Prof. Dr. Michał Stosiak
Faculty of Mechanical Engineering, Wrocław University of Science and Technology, Wrocław, Dolnośląskie, Poland
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Academic Career Length
20Years (2007-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications4 May 2023 in The International Journal of Advanced Manufacturing Technology
Journal Article
Mykola KarpenkoMichał Stosiak
Adam Deptuła
Kamil UrbanowiczJNJustas Nugaras
Justas Nugaras
Krzysztof Żak +1
Journal Article
Kamil Urbanowicz
Anton BergantMichał StosiakAdam DeptułaMykola KarpenkoThis paper reviews analytical solutions for the accelerated flow of an incompressible Newtonian fluid in a pipeline. This problem can be solved in one of two ways according to the (1) imposed pressure gradient or (2) flow rate. Laminar accelerated flow solutions presented in a number of publications concern cases where the two driving mechanisms are described by simple mathematical functions: (a) impulsive change; (b) constant change; (c) ramp change, etc. The adoption of a more complex and realistic description of the pressure gradient or flow rate will be associated with a profound mathematical complexity of the final solution. This is particularly visible with the help of the universal formula derived by several researchers over the years and discussed in this paper. In addition to the solutions strictly defined for laminar flow, an interesting extension of this theory is the theory of underlying laminar flow for the analysis of turbulent accelerated pipe flows (TULF model developed by García García and Alvariño). The TULF model extends the Pai model developed more than 60 years ago, which has been previously used for steady flows only. The discussed solutions extend the theory of analytical solutions of simplified two-dimensional Navier–Stokes equations and can be used not only to study the behavior of liquids during accelerating pipe flow but they can also be used to test the accuracy of commercial CFD codes.
Journal Article
Mykola KarpenkoMichał StosiakŠŠŠarūnas Šukevičius
Šarūnas ŠukevičiusPSPaulius Skačkauskas
Paulius SkačkauskasKamil UrbanowiczAdam DeptułaThe article presents the theoretical research on hydraulic processes occurring in hydraulic drives of transport machines. The research analysed the influence of hydrodynamic processes on the fluid flow characteristics following installation of angular fitting connections in pipeline systems. The analysis was based on the numerical simulations by Reynolds-averaged Navier–Stokes equations in 3D. The fluid flow in the hydraulic system pipeline connections were investigated for fluid flow rate up to 100 l/min. For numerical simulation, a mesh independence study was performed. By modeling. we obtained results of pressure drops, turbulence models, flow coefficients and energy losses at 45° and 90° angular fitting connections. The article compares the results obtained using the calculation method based on the standard of equivalent length fitting with the findings presented. The research conducted indicated that using the equivalent length method is not appropriate for studying angular fitting connections. It was found that additional investigations are necessary for each type of angular fitting connection.
Journal Article
Michał StosiakMykola KarpenkoAdam DeptułaKamil UrbanowiczPSPaulius Skačkauskas
Paulius SkačkauskasMŁMariusz Łapka
Mariusz Łapka +3
This paper identifies mechanical vibrations occurring in the operating environment of hydraulic systems used in marine engineering. Particular attention was paid to the influence of periodic vibrations on changes in the amplitude-frequency spectrum in a marine hydraulic system. For the case of analysing the effect of vibration on changes in the pressure pulsation spectrum with a proportional directional valve, a modified mathematical model was used. Experimental results were presented and compared with the results obtained from the mathematical model. A way of limiting the transmission of vibrations to the directional control valve body was proposed.
26 April 2023 in Journal of Fluids Engineering
Journal Article
Kamil UrbanowiczHJHaixiao Jing
Haixiao JingAnton BergantMichał StosiakMLMarek Lubecki
Marek LubeckiAnalytical formulas for laminar water hammer in horizontal pipes were extended and simplified into a compact mathematical form based on dimensionless parameters: dimensionless time, water hammer number, etc. Detailed treatment of turbulent water hammer analytical solutions is beyond the scope of this paper. In the Muto and Takahashi solution, novel Laplace and time domain formulas for flow velocity and wall shear stress were developed. A series of comparative studies of unified analytical solutions with numerical solutions and the results of measurements were carried out. The study shows that models that account for the frequency-dependent nature of hydraulic resistance agree very well with experimental results over a wide range of water hammer numbers Wh, particularly when Wh ≤ 0.1.
About Me
Michał Stosiak was born on August 10 1977 in Wrocław (Poland). In 2001 at Wrocław University of Science and Technology he acquired Master`s degree in Mechanical Engineering. In 2005 defended PhD dissertation at Wrocław University of Science and Technology and obtained Doctoral degree in Mechanical Engineering, construction and operation of machinery, hydraulic drive and control. In 2015 defended Habilitation at Wrocław University of Science and Technology and obtained Doctor of Science (Dr. Habil.) degree in Mechanical Engineering. From 2017 working in Associate Professor position at the Mechanical Engineering Faculty of Wrocław University of Science and Technology. In 2026, the President of Poland granted him the scientific title of (full) professor. Deputy Head of Department of Technical Systems Operation and Maintenance, former Head of Department of Hydraulic Drives and Automatics. Author of almost 300 scientific publications in Mechanical Engineering field author of 7 patents and 6 patents applications. The main research direction interests include: hydraulics, vibrations, pressure pulsation and damping, noise, hydrodynamics, frequency and vibration analysis, application of composite materials.
ORCID: 0000-0002-6111-1332
Wrocław University of Science and Technology, Faculty of Mechanical Engineering, Department of Technical Systems Operation and Maintenance.
https://wm.pwr.edu.pl/pracownicy/profil.html?name=michalstosiak-1712
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