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Title: Large-eddy simulation using the finite element method

Abstract

In a large-eddy simulation (LES) of turbulent flows, the large-scale motion is calculated explicitly (i.e., approximated with semi-empirical relations). Typically, finite difference or spectral numerical schemes are used to generate an LES; the use of finite element methods (FEM) has been far less prominent. In this study, we demonstrate that FEM in combination with LES provides a viable tool for the study of turbulent, separating channel flows, specifically the flow over a two-dimensional backward-facing step. The combination of these methodologies brings together the advantages of each: LES provides a high degree of accuracy with a minimum of empiricism for turbulence modeling and FEM provides a robust way to simulate flow in very complex domains of practical interest. Such a combination should prove very valuable to the engineering community.

Authors:
; ;  [1];  [2]
  1. Lawrence Livermore National Lab., CA (United States)
  2. California Univ., Davis, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10108063
Report Number(s):
UCRL-JC-114593; CONF-940659-3
ON: DE94004021
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 1994 American Society of Mechanical Engineers (ASME) Fluids Engineering Division summer meeting,Lake Tahoe, NV (United States),19-23 Jun 1994; Other Information: PBD: Oct 1993
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; TURBULENT FLOW; COMPUTERIZED SIMULATION; FINITE ELEMENT METHOD; NAVIER-STOKES EQUATIONS; BOUNDARY CONDITIONS; NUMERICAL SOLUTION; 420400; HEAT TRANSFER AND FLUID FLOW

Citation Formats

McCallen, R.C., Gresho, P.M., Leone, J.M. Jr., and Kollmann, W.. Large-eddy simulation using the finite element method. United States: N. p., 1993. Web.
McCallen, R.C., Gresho, P.M., Leone, J.M. Jr., & Kollmann, W.. Large-eddy simulation using the finite element method. United States.
McCallen, R.C., Gresho, P.M., Leone, J.M. Jr., and Kollmann, W.. Fri . "Large-eddy simulation using the finite element method". United States. https://www.osti.gov/servlets/purl/10108063.
@article{osti_10108063,
title = {Large-eddy simulation using the finite element method},
author = {McCallen, R.C. and Gresho, P.M. and Leone, J.M. Jr. and Kollmann, W.},
abstractNote = {In a large-eddy simulation (LES) of turbulent flows, the large-scale motion is calculated explicitly (i.e., approximated with semi-empirical relations). Typically, finite difference or spectral numerical schemes are used to generate an LES; the use of finite element methods (FEM) has been far less prominent. In this study, we demonstrate that FEM in combination with LES provides a viable tool for the study of turbulent, separating channel flows, specifically the flow over a two-dimensional backward-facing step. The combination of these methodologies brings together the advantages of each: LES provides a high degree of accuracy with a minimum of empiricism for turbulence modeling and FEM provides a robust way to simulate flow in very complex domains of practical interest. Such a combination should prove very valuable to the engineering community.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 1993},
month = {Fri Oct 01 00:00:00 EDT 1993}
}

Conference:
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