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Gas-Kinetic BGK Scheme for Supersonic Channel Flow Simulation

Chit, Ong J. and Omar, Ashraf A. and Asrar, Waqar and Ismail, Ahmad Faris (2006) Gas-Kinetic BGK Scheme for Supersonic Channel Flow Simulation. In: 1st Regional Conference on Vehicle Engineering & Technology, 3-5 July 2006, Kuala Lumpur, Malaysia.

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Abstract

In this paper, the gas-kinetic BGK (Bhatnagar-Gross-Krook) scheme is developed for simulating compressible inviscid supersonic channel flow. BGK scheme is an approximate Riemann solver that uses the collisional Boltzmann equation as the governing equation for flow evolutions. For efficient computations, particle distribution functions in the general solution of the BGK model are simplified and used for the flow simulations. Second-order accuracy is achieved via the reconstruction of flow variables using the MUSCL (Monotone Upstream-Centered Schemes for Conservation Laws) interpolation technique together with a multistage Runge-Kutta method. The number of grid points used for the domain is 241x131 which is generated using a structured algebraic grid generation method. The computational values compared very well to those of the analytical solution.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Finite difference method; BGK scheme; high-order accuracy; compressible inviscid flow
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:314
Deposited By: Mrs. Junaidah Abdullah
Deposited On:15 Feb 2007 05:43
Last Modified:01 Jun 2010 02:42

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