Elliptic relaxation second moment closure for turbulent heat flux

Jong Keun Shin, Jeong Soo An, Young Don Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The present contribution describes the development of near-wall second moment turbulent heat flux closure and its application to turbulent flows rotating with heat transfer to test the performance of the model. The second-moment models for turbulent heat fluxes are proposed on the basis of elliptic concept. The new models satisfy the near-wall balance between viscous diffusion, viscous dissipation and temperature-pressure gradient correlation, and also have the characteristics of approaching its respective conventional high Reynolds number model far away from the wall. In order to develop the new heat flux models, first of all, the velocity field variables are supplied from the DNS data, and the differential equations only for the mean temperature and the scalar flux are solved by the present calculations with constant wall heat flux and constant wall temperature boundary conditions respectively. And then, the rotating channel and square duct flows with heat transfer have been simulated by the present heat flux models. The predictions in rotating and non-rotating flows show that the behavior of the turbulent heat transfer in the whole flow region is well captured by the present models.

Original languageEnglish
Title of host publication4th International Symposium on Turbulence and Shear Flow Phenomena
Pages271-276
Number of pages6
Volume1
Publication statusPublished - 2005 Dec 1
Event4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 - Williamsburg, VA, United States
Duration: 2005 Jun 272005 Jun 29

Other

Other4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4
CountryUnited States
CityWilliamsburg, VA
Period05/6/2705/6/29

Fingerprint

Heat flux
Heat transfer
Pressure gradient
Ducts
Temperature
Turbulent flow
Reynolds number
Differential equations
Boundary conditions
Fluxes

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Shin, J. K., An, J. S., & Choi, Y. D. (2005). Elliptic relaxation second moment closure for turbulent heat flux. In 4th International Symposium on Turbulence and Shear Flow Phenomena (Vol. 1, pp. 271-276)

Elliptic relaxation second moment closure for turbulent heat flux. / Shin, Jong Keun; An, Jeong Soo; Choi, Young Don.

4th International Symposium on Turbulence and Shear Flow Phenomena. Vol. 1 2005. p. 271-276.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shin, JK, An, JS & Choi, YD 2005, Elliptic relaxation second moment closure for turbulent heat flux. in 4th International Symposium on Turbulence and Shear Flow Phenomena. vol. 1, pp. 271-276, 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4, Williamsburg, VA, United States, 05/6/27.
Shin JK, An JS, Choi YD. Elliptic relaxation second moment closure for turbulent heat flux. In 4th International Symposium on Turbulence and Shear Flow Phenomena. Vol. 1. 2005. p. 271-276
Shin, Jong Keun ; An, Jeong Soo ; Choi, Young Don. / Elliptic relaxation second moment closure for turbulent heat flux. 4th International Symposium on Turbulence and Shear Flow Phenomena. Vol. 1 2005. pp. 271-276
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