INVESTIGATION OF CHANGING PRESSURE AND DRAG COEFFICIENT ON SQUARE CYLINDER WITH DIFFERENT CORNER IN AIR FLOW
Published In: 4TH INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND MECHANICAL ENGINEERING
Author(s): ALI KARGAR , MAJID LOTFI
Abstract: In this research, numerical analysis of corners of square cylinder on following parameters of the turbulence and changing pressure and drag coefficient in air flow has been discussed. Selected models were made of Plexiglas that side length is 15mm and high of this is 400mm. To investigate effect of different corners on following parameters of square cylinder, these cylinders with sharp, rounded and beveled corners are used. Amount of bevel and radius of rounded edges are selected 25.5mm. Type of grid (mesh) around each square is structured and for other parts of solution range, unstructured mesh was used. The result of this research, shows angle of attack and figure of corners of cylinder, causes significant changes in turbulence parameters of square cylinder and value of drag coefficient. Rounding and bevel corners of square cylinder, decrease mean (average) and maximum turbulence in the wakes of cylinder. Drag coefficient by rounding and beveling corners of square cylinder with sharp
- Publication Date: 08-May-2016
- DOI: 10.15224/978-1-63248-096-5-10
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VALIDATION OF LBM BASED ON BGK ON POISEUILLE’S FLOW AND VORTEX STREET IN A CHANNEL FLOW
Published In: 4TH INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND MECHANICAL ENGINEERING
Author(s): AKSHAY PRAKASH , ALANKAR AGARWAL
Abstract: The aim of research is to simulate a large scale bioreactor using Lattice Boltzmann method (LBM). Design and scale up a bioreactor is a highly complex process since it involves various physical phenomena occurring together. Computational Fluid Dynamics (CFD) has been developed over the years to simulate complex phenomenon occurring in a bioreactor and can make up for the shortcomings associated with traditional scale-up methods. It allows the simulation of all the relevant physics like species and thermal transport along with millions of bubbles. Due to various recent advances in numerical techniques and computer hardware (particularly the Graphical Processing Units-GPUs, aimed at number crunching applications), the simulation of an industrial scale reactor is now possible in reasonable time. While conventional pressure based solvers, such as the SIMPLE algorithm and its variants, do not scale well with large number of processors and may not utilize the GPUs cores effectively, Lattice
- Publication Date: 08-May-2016
- DOI: 10.15224/978-1-63248-096-5-11
- Views: 0
- Downloads: 0