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A numerical study of effect of initial condition on large eddy simulation of thermal plume

Yan, Zhenghua LU (2003) In Numerical Heat Transfer Part B: Fundamentals 43(2). p.167-178
Abstract
Large eddy simulations of thermal plume in two different scenarios have been carried out using a self-developed parallel computational fluid dynamics (CFD) code, SMAFS (Smoke Movement And Flame Spread), with subgrid-scale turbulence modeled using the Smagorinsky model. Two different initial conditions were used in the simulations, and the results were compared to show that the initial condition has a significant effect on the prediction of the plume's evolution behavior. The filtered governing equations were discretized using the finite-volume method, with the variables at the cell faces in the finite-volume discrete equations approximated by a second-order bounded QUICK scheme and the diffusion term computed based on the central... (More)
Large eddy simulations of thermal plume in two different scenarios have been carried out using a self-developed parallel computational fluid dynamics (CFD) code, SMAFS (Smoke Movement And Flame Spread), with subgrid-scale turbulence modeled using the Smagorinsky model. Two different initial conditions were used in the simulations, and the results were compared to show that the initial condition has a significant effect on the prediction of the plume's evolution behavior. The filtered governing equations were discretized using the finite-volume method, with the variables at the cell faces in the finite-volume discrete equations approximated by a second-order bounded QUICK scheme and the diffusion term computed based on the central difference scheme. All the computations were explicitly time-marched, with the momentum equations solved based on a second-order fractional-step Adams-Bashford scheme and the enthalpy computed using a second-order Runge-Kutta method. The Poisson equation for pressure from the continuity equation was solved using a multigrid solver. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Numerical Heat Transfer Part B: Fundamentals
volume
43
issue
2
pages
167 - 178
publisher
Taylor & Francis
external identifiers
  • wos:000180223100004
  • scopus:0242709821
ISSN
1040-7790
DOI
10.1080/713836173
language
English
LU publication?
yes
id
236a3f56-6775-4d2d-9c7f-c0410181ba3b (old id 320235)
date added to LUP
2007-09-24 13:12:49
date last changed
2018-01-07 09:27:03
@article{236a3f56-6775-4d2d-9c7f-c0410181ba3b,
  abstract     = {Large eddy simulations of thermal plume in two different scenarios have been carried out using a self-developed parallel computational fluid dynamics (CFD) code, SMAFS (Smoke Movement And Flame Spread), with subgrid-scale turbulence modeled using the Smagorinsky model. Two different initial conditions were used in the simulations, and the results were compared to show that the initial condition has a significant effect on the prediction of the plume's evolution behavior. The filtered governing equations were discretized using the finite-volume method, with the variables at the cell faces in the finite-volume discrete equations approximated by a second-order bounded QUICK scheme and the diffusion term computed based on the central difference scheme. All the computations were explicitly time-marched, with the momentum equations solved based on a second-order fractional-step Adams-Bashford scheme and the enthalpy computed using a second-order Runge-Kutta method. The Poisson equation for pressure from the continuity equation was solved using a multigrid solver.},
  author       = {Yan, Zhenghua},
  issn         = {1040-7790},
  language     = {eng},
  number       = {2},
  pages        = {167--178},
  publisher    = {Taylor & Francis},
  series       = {Numerical Heat Transfer Part B: Fundamentals},
  title        = {A numerical study of effect of initial condition on large eddy simulation of thermal plume},
  url          = {http://dx.doi.org/10.1080/713836173},
  volume       = {43},
  year         = {2003},
}