Development of Object-Oriented Direct Simulation Monte Carlo Code for Modeling of Rarefied Flow around Geometries of Arbitrary Shapes

Sourabh Jain; Prabhu Ramachandran

doi:10.4028/www.scientific.net/AMM.110-116.2491

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 110-116Development of Object-Oriented Direct Simulation...

Development of Object-Oriented Direct Simulation Monte Carlo Code for Modeling of Rarefied Flow around Geometries of Arbitrary Shapes

Abstract:

Rarefied flows cannot be accurately simulated using Navier-Stokes (N-S) equations. The Direct Simulation Monte-Carlo (DSMC) technique is a particle based method for accurate simulation of flows under such conditions. A DSMC code is developed using an object-oriented (OO) approach which can simulate flows around arbitrary shapes. Hence, the flux from such boundaries can be correctly predicted. The object-oriented approach enables for easy modification of the code. For example, it is easy to use different collision models to implement different relaxation algorithm. The code is validated for the one-dimensional Fourier heat conduction problem. Results for the development of a shock due to supersonic flow over a 15 degree wedge are also presented. Inclined boundary of the wedge is correctly captured as the particles interact with the the exact shape of the boundary. Shock angle is found more than expected due to rarefaction effects.

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Periodical:

Applied Mechanics and Materials (Volumes 110-116)

Pages:

2491-2496

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.110-116.2491

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Online since:

October 2011

Authors:

Sourabh Jain, Prabhu Ramachandran

Keywords:

Collision Model, DSMC, Knudsen Number, Temperature Jump

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