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Applications of scale-adaptive simulation technique based on one-equation turbulence model

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Abstract

A modified scale-adaptive simulation (SAS) technique based on the Spalart-Allmaras (SA) model is proposed. To clarify its capability in prediction of the complex turbulent flow, two typical cases are carried out, i.e., the subcritical flow past a circular cylinder and the transonic flow over a hemisphere cylinder. For comparison, the same cases are calculated by the detached-eddy simulation (DES), the delayed-detached eddy simulation (DDES), and the XY-SAS approaches. Some typical results including the mean pressure coefficient, velocity, and Reynolds stress profiles are obtained and compared with the experiments. Extensive calculations show that the proposed SAS technique can give better prediction of the massively separated flow and shock/turbulent-boundary-layer interaction than the DES and DDES methods. Furthermore, by the comparison of the XY-SAS model with the present SAS model, some improvements can be obtained.

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Authors and Affiliations

  1. College of Aerospace Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing, 210016, P. R. China

    Chang-yue Xu, Tao Zhou, Cong-lei Wang & Jian-hong Sun

Authors
  1. Chang-yue Xu
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  2. Tao Zhou
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  3. Cong-lei Wang
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  4. Jian-hong Sun
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Corresponding author

Correspondence to Chang-yue Xu.

Additional information

Project supported by the National Natural Science Foundation of China (No. 11202100), the Natural Science Fund in Jiangsu Province (No.BK2011723), the Fundamental Research Funds for the Central Universities (No.NS2012032), and the Priority Academic Program Development of Jiangsu Higher Education Institutions

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Xu, Cy., Zhou, T., Wang, Cl. et al. Applications of scale-adaptive simulation technique based on one-equation turbulence model. Appl. Math. Mech.-Engl. Ed. 36, 121–130 (2015). https://doi.org/10.1007/s10483-015-1898-9

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  • DOI: https://doi.org/10.1007/s10483-015-1898-9

Key words

Chinese Library Classification

2010 Mathematics Subject Classification

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