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Large-Eddy Simulation of turbulent vortex shedding

Abstract

This thesis documents the development and application of a computational algorithm for Large-Eddy Simulation. Unusually, the method adopts a fully collocated variable storage arrangement and is applicable to complex, non-rectilinear geometries. A Reynolds-averaged Navier-Stokes algorithm has formed the starting point of the development, but has been modified substantially: the spatial approximation of convection is effected by an energy-conserving central-differencing scheme; a second-order time-marching Adams-Bashforth scheme has been introduced; the pressure field is determined by solving the pressure-Poisson equation; this equation is solved either by use of preconditioned Conjugate-Gradient methods or with the Generalised Minimum Residual method; two types of sub-grid scale models have been introduced and examined. The algorithm has been validated by reference to a hierarchy of unsteady flows of increasing complexity starting with unsteady lid-driven cavity flows and ending with 3-D turbulent vortex shedding behind a square prism. In the latter case, for which extensive experimental data are available, special emphasis has been put on examining the dependence of the results on mesh density, near-wall treatment and the nature of the sub-grid-scale model, one of which is an advanced dynamic model. The LES scheme is shown to return time-average and phase-averaged results which agree well with experimental data  More>>
Authors:
Publication Date:
Jun 01, 1995
Product Type:
Technical Report
Report Number:
EDF-96-NB-00037
Reference Number:
SCA: 661300; PA: AIX-29:039883; EDB-98:084711; SN: 98001989019
Resource Relation:
Other Information: DN: 87 refs.; PBD: Jun 1995
Subject:
66 PHYSICS; ALGORITHMS; CALCULATION METHODS; COMPUTERIZED SIMULATION; CONVECTION; NAVIER-STOKES EQUATIONS; REYNOLDS NUMBER; TURBULENT FLOW; UNSTEADY FLOW; WALL EFFECTS
OSTI ID:
660252
Research Organizations:
Electricite de France (EDF), 75 - Paris (France)
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: DE98629701; TRN: FR9800210039883
Availability:
INIS; OSTI as DE98629701
Submitting Site:
FRN
Size:
275 p.
Announcement Date:

Citation Formats

Archambeau, F. Large-Eddy Simulation of turbulent vortex shedding. France: N. p., 1995. Web.
Archambeau, F. Large-Eddy Simulation of turbulent vortex shedding. France.
Archambeau, F. 1995. "Large-Eddy Simulation of turbulent vortex shedding." France.
@misc{etde_660252,
title = {Large-Eddy Simulation of turbulent vortex shedding}
author = {Archambeau, F}
abstractNote = {This thesis documents the development and application of a computational algorithm for Large-Eddy Simulation. Unusually, the method adopts a fully collocated variable storage arrangement and is applicable to complex, non-rectilinear geometries. A Reynolds-averaged Navier-Stokes algorithm has formed the starting point of the development, but has been modified substantially: the spatial approximation of convection is effected by an energy-conserving central-differencing scheme; a second-order time-marching Adams-Bashforth scheme has been introduced; the pressure field is determined by solving the pressure-Poisson equation; this equation is solved either by use of preconditioned Conjugate-Gradient methods or with the Generalised Minimum Residual method; two types of sub-grid scale models have been introduced and examined. The algorithm has been validated by reference to a hierarchy of unsteady flows of increasing complexity starting with unsteady lid-driven cavity flows and ending with 3-D turbulent vortex shedding behind a square prism. In the latter case, for which extensive experimental data are available, special emphasis has been put on examining the dependence of the results on mesh density, near-wall treatment and the nature of the sub-grid-scale model, one of which is an advanced dynamic model. The LES scheme is shown to return time-average and phase-averaged results which agree well with experimental data and which support the view that LES is a promising approach for unsteady flows dominated by large periodic structures. (author) 87 refs.}
place = {France}
year = {1995}
month = {Jun}
}