Development of a source code to analyze the effect of Reynolds number on a square lid driven cavity
Abstract
Numerical simulations of two-dimensional, steady, incompressible lid driven flow in a square cavity were investigated in this work. A commercial finite volume package of ANSYS-FLUENT was used to analyze and visualize the nature of the flow inside the cavity at different Reynolds Number. In addition, a MATLAB code was developed and validated by comparing the results with the reference values from literature. Staggered grid was employed in discretization of the cavity to avoid checkerboard pressure while developing the code. The governing equations were discretized in terms of velocity and pressure fields. Artificial compressibility method was used to de-couple the pressure and velocity terms in the governing equations. A 129x129 grid system was used in both cases. The effects of Reynolds number (100 on the flow characteristics were illustrated through the analysis of stream function, velocity vector, pressure co-efficient and velocity contours. The thinning of the wall boundary layers with increase in Reynolds number is evident from the u and v velocity profiles along the vertical and horizontal lines at the geometric center, although the rate of this thinning is very slow for Re > 5000.
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Author Biographies
Kamrul Hasan Rahi received his B.Sc. degree in Mechanical Engineering from Khulna University of Engineering & Technology, Bangladesh in 2017. This manuscript is made from his undergraduate thesis done during 4th academic year. Currently he works as a Lecturer at Department of Farm Power and Machinery under Faculty of Agricultural Engineering and Technology in Sylhet Agricultural University, Sylhet. His research interest focus on Numerical Modelling, Thermo Fluid Characteristics, Design Optimization, Heat Transfer etc. He has participated in a project work during his 3rd academic year in undergrad life. He has published a conference paper as a first author in International Conference on Mechanical, Industrial and Energy Engineering held in Bangladesh.
Golam Md. Mortuza completed his Bachelor of Science degree from Khulna University of Engineering & Technology in Mechanical Engineering. Currently he is working as a maintenance engineer (Mechanical) at Tung Hing (BD) MFY Ltd. His research focues on Computational Fluid Dynamics, Control engineering and robotics. He has experience to work with C, Python, Java, Php, JavaScript. Making websites is his hobby.
Dr. Abdullah Al-Faruk received his B.Sc. degree in Mechanical Engineering from Khulna University of Engineering & Technology, Bangladesh. He received his PhD degree from University of Southern Queensland, Australia. This manuscript is made from an undergraduate thesis done under his supervision by authors Kamrul Hasan Rahi and Golam Md. Mortuza. Currently he works as an Assistant Professor at Department of Mechanical Engineering in Khulna University of Engineering & Technology, Khulna.
Copyright (c) 2018 Kamrul Hasan Rahi, Golam Md. Mortuza, Abdullah Al-Faruk
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