Numerical Simulation of Rotating Channel Flows Using a Second Moment Turbulence Closure

- Journal title : Transactions of the Korean Society of Mechanical Engineers B
- Volume 24, Issue 4, 2000, pp.578-588
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-B.2000.24.4.578

Title & Authors

Numerical Simulation of Rotating Channel Flows Using a Second Moment Turbulence Closure

Shin, Jong-Keun; Choi, Young-Don;

Shin, Jong-Keun; Choi, Young-Don;

Abstract

A low-Reynolds-number second moment turbulence closure is improved with the aid of DNS data. For the model coefficients of pressure-strain terms, we adopted Shima's model with some modification. Shin and Choi's new dissipation-rate equation is employed to simulate accurately the turbulence energy dissipation rate distribution in the near wall sublayer. The results of computations are compared with DNS, LES data and experimental data for turbulent plane channel flow with rotation about spanwise axis. The present second moment closure achieves a level of agreement similar to that for the non-rotating. In particular, it accurately captures the distribution of turbulence energy dissipation rate in the near wall region.

Keywords

Rotating Flow;Second Moment Turbulence Closure;Coriolis Force;Rotation Number;

Language

Korean

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