Improvement of a low-Reynolds-number second moment closure and its application to rotating turbulent channel flows

Jong Keun Shin; Young Don Choi

doi:10.1299/jsmeb.44.63

Improvement of a low-Reynolds-number second moment closure and its application to rotating turbulent channel flows

Jong Keun Shin^*
, Young Don Choi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

A low-Reynolds-number second moment closure is improved with the aid of DNS data and applied to turbulent channel flows with a spanwise rotation. Shima's pressure strain model is refined and a multiple source model is introduced for the exact ε equation. Computational results for the turbulent plane channel flows rotating in orthogonal mode are compared with the DNS, LES and experimental data. The present second moment closure achieves a level of agreement with DNS data similar to those for the non-rotating flow cases. In particular, it yields the improved performance in predicting the distributions of ε in the near wall sublayer.

Original language	English
Pages (from-to)	63-71
Number of pages	9
Journal	JSME International Journal, Series B: Fluids and Thermal Engineering
Volume	44
Issue number	1
DOIs	https://doi.org/10.1299/jsmeb.44.63
Publication status	Published - 2001 Feb

Keywords

Coriolis force
Rotating flow
Rotation number
Second moment turbulence closure

ASJC Scopus subject areas

Mechanical Engineering
Physical and Theoretical Chemistry
Fluid Flow and Transfer Processes

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abstract = "A low-Reynolds-number second moment closure is improved with the aid of DNS data and applied to turbulent channel flows with a spanwise rotation. Shima's pressure strain model is refined and a multiple source model is introduced for the exact ε equation. Computational results for the turbulent plane channel flows rotating in orthogonal mode are compared with the DNS, LES and experimental data. The present second moment closure achieves a level of agreement with DNS data similar to those for the non-rotating flow cases. In particular, it yields the improved performance in predicting the distributions of ε in the near wall sublayer.",

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AB - A low-Reynolds-number second moment closure is improved with the aid of DNS data and applied to turbulent channel flows with a spanwise rotation. Shima's pressure strain model is refined and a multiple source model is introduced for the exact ε equation. Computational results for the turbulent plane channel flows rotating in orthogonal mode are compared with the DNS, LES and experimental data. The present second moment closure achieves a level of agreement with DNS data similar to those for the non-rotating flow cases. In particular, it yields the improved performance in predicting the distributions of ε in the near wall sublayer.

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Improvement of a low-Reynolds-number second moment closure and its application to rotating turbulent channel flows

Abstract

Keywords

ASJC Scopus subject areas

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