Turbulent structure and relaminalization of a rotating turbulent channel flow at high rotaton number

Shinichiro Sato, Shinnosuke Obi

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

Abstract

The present study reports on a series of direct numerical simulation of turbulent rotating channel flows at rotation numbers higher than those previously reported. The bulk Reynolds number (Re) was set approximately constant at 5800, while the non-dimensional rotation number Ro was increased up to 5.79. The flow visualization showed that the structure of the enlarged eddies on the pressure side, and the orientation of the structure was inclined towards downstream. The investigation of the budget of Reynolds stress transport equation indicated that the pressure transport of Reynolds stress and re-distribution term were extraordinary large at higher Ro. This led the conventional decomposition of velocity-pressure correlation terms to being not appropriate in this flow. It is suggested that the Reynolds stress modeling should better target the correlation between velocity and pressure gradient, or pressure diffusion and re-distribution terms must be handled with the same efforts, which indeed increases the task of modeling.

Original languageEnglish
Title of host publication2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007
Pages211-216
Number of pages6
Volume1
DOIs
Publication statusPublished - 2007
Event2007 ASME/JSME Thermal Engineering Summer Heat Transfer Conference, HT 2007 - Vancouver, BC, Canada
Duration: 2007 Jul 82007 Jul 12

Other

Other2007 ASME/JSME Thermal Engineering Summer Heat Transfer Conference, HT 2007
CountryCanada
CityVancouver, BC
Period07/7/807/7/12

Fingerprint

channel flow
Channel flow
Reynolds stress
flow visualization
Direct numerical simulation
Flow visualization
Pressure gradient
direct numerical simulation
pressure gradients
budgets
Reynolds number
vortices
Decomposition
decomposition
gradients

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

Cite this

Sato, S., & Obi, S. (2007). Turbulent structure and relaminalization of a rotating turbulent channel flow at high rotaton number. In 2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007 (Vol. 1, pp. 211-216) https://doi.org/10.1115/HT2007-32593

Turbulent structure and relaminalization of a rotating turbulent channel flow at high rotaton number. / Sato, Shinichiro; Obi, Shinnosuke.

2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007. Vol. 1 2007. p. 211-216.

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

Sato, S & Obi, S 2007, Turbulent structure and relaminalization of a rotating turbulent channel flow at high rotaton number. in 2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007. vol. 1, pp. 211-216, 2007 ASME/JSME Thermal Engineering Summer Heat Transfer Conference, HT 2007, Vancouver, BC, Canada, 07/7/8. https://doi.org/10.1115/HT2007-32593
Sato S, Obi S. Turbulent structure and relaminalization of a rotating turbulent channel flow at high rotaton number. In 2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007. Vol. 1. 2007. p. 211-216 https://doi.org/10.1115/HT2007-32593
Sato, Shinichiro ; Obi, Shinnosuke. / Turbulent structure and relaminalization of a rotating turbulent channel flow at high rotaton number. 2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007. Vol. 1 2007. pp. 211-216
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