Volume 35 Issue 11
Nov.  2020
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Article Navigation >  Journal of Aerospace Power  > 2020  >  35(11): 2440-2448
KANG Kai, ZHANG Ziliang, WANG Weiqiang. Influence of computational domain size on large ,eddy simulation results,[J]. Journal of Aerospace Power, 2020, 35(11): 2440-2448. doi: 10.13224/j.cnki.jasp.2020.11.021
Citation: KANG Kai, ZHANG Ziliang, WANG Weiqiang. Influence of computational domain size on large ,eddy simulation results,[J]. Journal of Aerospace Power, 2020, 35(11): 2440-2448. doi: 10.13224/j.cnki.jasp.2020.11.021
shu

Influence of computational domain size on large ,eddy simulation results,

doi: 10.13224/j.cnki.jasp.2020.11.021
  • 1.

    College of Petroleum Engineering,Liaoning Shihua University,Fushun Liaoning 113001,China

  • 2.

    Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China

  • 3.

    Key Laboratory of Wind Energy Utilization,Chinese Academy of Sciences,Beijing 100190,China

  • 4.

    Institute of Science and Technology,China Three Gorges Corporation,Beijing 100038,China

  • Received Date: 2020-01-09
  • Publish Date: 2020-11-28
    Abstract
  • In order to save computing resources and improve computation efficiency, it is particularly important to ensure the accuracy of the calculation results and to select a computational domain as small as possible. The influence of computational domain size on large eddy simulations of turbulent channels with periodic boundary conditions was studied. Simulations were presented in channels with streamwise and spanwise sizes of 053πδ×2δ×0177πδ, πδ×2δ×05πδ, 2πδ×2δ×πδ and 3πδ×2δ×15πδ, wherein δ is the channel half-height. On the premise that the calculation conditions are the same and the settings meet large eddy simulation calculation requirements, the influence of calculation domain size on large eddy simulation numerical calculation results under friction Reynolds number of 540 and 930 was studied. It was found that the computational scale not less than 2πδ×2δ×πδ could well present the turbulence results. In addition, the accuracy of turbulence information in the same computational domain was improved at friction Reynolds number of 930.

     

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