Effects of wall rotation on heat transfer to annular turbulent flow

Outer wall rotating

Joon Sang Lee, Xiaofeng Xu, Richard H. Pletcher

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Simulations were conducted for air flowing upward in a vertical annular pipe with a rotating outer wall. Simulations concentrated on the occurrence of laminarization and property variations for high heat flux heat transfer. The compressible filtered Navier-Stokes equations were solved using a second-order accurate finite volume method. Low Mach number preconditioning was used to enable the compressible code to work efficiently at low Mach numbers. A dynamic subgrid-scale stress model accounted for the subgrid-scale turbulence. When the outer wall rotated, a significant reduction of turbulent kinetic energy was realized near the rotating wall and the intensity of bursting appeared to decrease. This modification of the turbulent structures was related to the vortical structure changes near the rotating wall. It has been observed that the wall vortices were pushed in the direction of rotation and their intensity increased near the nonrotating wall. The consequent effect was to enhance the turbulent kinetic energy and increase the Nusselt number there.

Original languageEnglish
Pages (from-to)830-838
Number of pages9
JournalJournal of Heat Transfer
Volume127
Issue number8
DOIs
Publication statusPublished - 2005 Aug 1

Fingerprint

Kinetic energy
turbulent flow
Mach number
Turbulent flow
heat transfer
Heat transfer
Finite volume method
Nusselt number
Navier Stokes equations
Heat flux
Vortex flow
Turbulence
Pipe
Air
kinetic energy
preconditioning
finite volume method
Navier-Stokes equation
heat flux
simulation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Lee, Joon Sang ; Xu, Xiaofeng ; Pletcher, Richard H. / Effects of wall rotation on heat transfer to annular turbulent flow : Outer wall rotating. In: Journal of Heat Transfer. 2005 ; Vol. 127, No. 8. pp. 830-838.
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Effects of wall rotation on heat transfer to annular turbulent flow : Outer wall rotating. / Lee, Joon Sang; Xu, Xiaofeng; Pletcher, Richard H.

In: Journal of Heat Transfer, Vol. 127, No. 8, 01.08.2005, p. 830-838.

Research output: Contribution to journalArticle

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