Hybrid rans-les approaches for the prediction of turbulent heat flux

Donghwa Jeong, Young Don Choi, Jongkeun Shin

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

In the engineering applications, various types of thermal boundary conditions can be imposed on the velocity field. It is thus necessary to obtain the practically important quantities, such as the turbulent heat flux and the heat transfer coefficient. Because of some success, it is still believed that the most reliable prediction methods are those based on the LES approaches. However, at high Reynolds numbers, LES is considered too CPU-demanding for complex industrial applications. Therefore computations based on a RANS model in the near wall regions, and on LES in some other regions, where explicit computation of the large scale structure is required, are needed as a hybrid RANS-LES(HRL) computation. This paper reports on application of PITM(Partially Integrated Transport Model), the seamless HRL, to the simulation of heat transfer of non-equilibrium flow. In order to reproduce the sub-grid scale eddy viscosity, PITM are based on v2-f model for the subgrid scale eddy and temperature field is analyzed by eddy diffusivity model. The proposed models are validated against the DNS data of the fully-developed turbulent channel flow with uniform heat flux.

Original languageEnglish
Pages517-522
Number of pages6
Publication statusPublished - 2009 Jan 1
Event6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009 - Seoul, Korea, Republic of
Duration: 2009 Jun 222009 Jun 24

Other

Other6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009
CountryKorea, Republic of
CitySeoul
Period09/6/2209/6/24

    Fingerprint

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Jeong, D., Choi, Y. D., & Shin, J. (2009). Hybrid rans-les approaches for the prediction of turbulent heat flux. 517-522. Paper presented at 6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009, Seoul, Korea, Republic of.