Large eddy simulation of the effects of inner wall rotation on heat transfer in annular turbulent flow

Joon Sang Lee, Xiaofeng Xu, Richard H. Pletcher

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A large eddy simulation has been performed to investigate the effect of swirl on the heat and momentum transfer in an annular pipe flow with a rotating inner wall. 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. A nonuniform grid in the radial direction yielded very accurate solutions using a reasonable number of grid points. The numerical results are summarized and compared with the experimental results of previous studies. The simulations indicated that the Nusselt number and the wall friction coefficient increased with increasing rotation speed of the wall. It was also observed that the axial velocity profile became flattened and turbulent intensities were enhanced due to swirl. This modification of the turbulent structures was closely related to the increase of the Nusselt number and the friction coefficient.

Original languageEnglish
Pages (from-to)323-341
Number of pages19
JournalNumerical Heat Transfer; Part A: Applications
Volume46
Issue number4
DOIs
Publication statusPublished - 2004 Aug 20

All Science Journal Classification (ASJC) codes

  • Numerical Analysis
  • Condensed Matter Physics

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