Investigation into the influences of the low-speed flows’ accuracy on RANS simulations

Feng Qu, Di Sun

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

With the explosive development of the Computational Fluid Dynamics (CFD), many researchers studied accurate Reynolds Averaged Navier–Stokes (RANS) simulations in low-speed flows by analyzing turbulence modeling or high order reconstruction methods. Few people noticed the influence of the accuracy of spatial scheme for low-speed flow on the RANS simulations. In this paper, we conduct a systematic study on this issue. After a verification of our compressible code, the following four numerical tests are conducted: the flat plate, the NACA0012 airfoil, the NACA4412 airfoil, and the backward facing step. Grid convergent results in these cases show that a high level of accuracy at low speeds is beneficial to the steady RANS computations.

Original languageEnglish
Pages (from-to)578-589
Number of pages12
JournalAerospace Science and Technology
Volume70
DOIs
StatePublished - Nov 2017
Externally publishedYes

Keywords

  • Computational fluid dynamics
  • Low speeds
  • Reynolds averaged Navier–Stokes
  • Turbulence
  • Upwind scheme

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