Large eddy simulation of mixed convection in a vertical turbulent annular pipe flow

Joon Sang Lee, Xiaofeng Xu, R. H. Pletcher

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


The goal of the present study is to perform a large eddy simulation of vertical turbulent annular pipe flow under conditions in which fluid properties vary significantly, and to investigate the effects of buoyancy on the turbulent structures and transport. Isoflux wall boundary conditions with low and high heating are imposed. The compressible filtered Navier-Stokes equations are solved using a second order accurate finite volume method. Low Mach number preconditioning is used to enable the compressible code to work efficiently at low Mach numbers. A dynamic subgrid-scale stress model accounts for the subgrid-scale turbulence. Comparisons were made with available experimental data. The results showed that the strong heating and buoyant force caused distortions of the flow structure resulting in reduction of turbulent intensities, shear stress, and turbulent heat flux, particularly near the wall.

Original languageEnglish
Title of host publicationHeat Transfer
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages14
ISBN (Print)0791836371, 9780791836378
Publication statusPublished - 2002

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering


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