An accurate and efficient prediction of the aerodynamics and aerothermodynamics of a full-size hypersonic vehicle is practical and significant. In this paper, an asymptotic-preserving direct simulation Monte Carlo method, which is based on the successive penalty method that originated from Bhatnagar–Gross–Krook penalization, is developed to simulate a large cylinder covering the rarefied to the continuum regimes. The asymptotic-preserving direct simulation Monte Carlo method enables a much larger time step compared with the mean free time and is therefore suitable for large-scale simulations. To further improve the accuracy of simulations with a large time step, a simple but effective sampling strategy is presented. Computational results indicate that the asymptotic-preserving direct simulation Monte Carlo method with the new sampling strategy is more efficient that the conventional direct simulation Monte Carlo method without sacrificing accuracy. This result confirms that the proposed method provides a promising approach for practical full-scale simulation, which is useful and significant to engineering applications.


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    Title :

    Asymptotic-Preserving Monte Carlo Method for Large Cylinder Hypersonic Flows


    Contributors:
    Zhang, Bin (author) / Chen, Hao (author) / Li, Linying (author) / Shao, Xiaoyu (author)

    Published in:

    Publication date :

    2018-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English