Large eddy simulation of turbulent forced gas flows in vertical pipes with high heat transfer rates

Xiaofeng Xu, Joon Sang Lee, Richard H. Pletcher, A. Mohsen Shehata, Donald M. McEligot

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Large eddy simulation (LES) of vertical turbulent pipe flows with significant property variations has been performed to investigate the effects of high heat fluxes on the turbulent structures and transport. The Cartesian-based, 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 perform efficiently at low Mach numbers. A dynamic subgrid-scale stress model accounted for the subgrid-scale turbulence. In this study, the simulations were designed to simulate the experiments of Shehata and McEligot with three different near-constant heat fluxes. Step-periodic boundary conditions based on a quasi-developed assumption were used. The predicted integral parameters and mean velocity and temperature profiles agreed well with the experimental data. The fluid structures have been distorted due to high heat fluxes leading to significant property variations in the near wall region. The results showed that strong heating resulted in remarkable reductions of turbulent intensities, shear stresses, and turbulent heat flux. Apparent "laminarization" of the flow has been observed.

Original languageEnglish
Pages (from-to)4113-4123
Number of pages11
JournalInternational Journal of Heat and Mass Transfer
Volume47
Issue number19-20
DOIs
Publication statusPublished - 2004 Sep 1

Fingerprint

Large eddy simulation
large eddy simulation
gas flow
Flow of gases
Heat flux
heat flux
heat transfer
Pipe
Heat transfer
Mach number
preconditioning
pipe flow
finite volume method
Pipe flow
Finite volume method
temperature profiles
Navier-Stokes equation
Navier Stokes equations
shear stress
Shear stress

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Xu, Xiaofeng ; Lee, Joon Sang ; Pletcher, Richard H. ; Shehata, A. Mohsen ; McEligot, Donald M. / Large eddy simulation of turbulent forced gas flows in vertical pipes with high heat transfer rates. In: International Journal of Heat and Mass Transfer. 2004 ; Vol. 47, No. 19-20. pp. 4113-4123.
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Large eddy simulation of turbulent forced gas flows in vertical pipes with high heat transfer rates. / Xu, Xiaofeng; Lee, Joon Sang; Pletcher, Richard H.; Shehata, A. Mohsen; McEligot, Donald M.

In: International Journal of Heat and Mass Transfer, Vol. 47, No. 19-20, 01.09.2004, p. 4113-4123.

Research output: Contribution to journalArticle

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