Efficient Large-Eddy Simulations of Low Mach Number Flows Using Preconditioning and Multigrid

Abstract

In the present paper an implicit time accurate approach combined with multigrid and preconditioning is used for the large-eddy simulation of low Mach number flows. It will be shown that the present approach allows an efficiency gain of a factor 4 to 7 compared to the use of a purely explicit approach. The efficiency varies according to the test case grid clustering physical time step and requested residual drop.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADP013662

Entities

People

  • Bamdad Lessani
  • Chris Lacor
  • Jan Ramboer

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Channel Flow
  • Computational Fluid Dynamics
  • Continuity
  • Convergence
  • Dissipation
  • Efficiency
  • Equations
  • Flow
  • Fluid Mechanics
  • Frequency
  • Iterations
  • Large Eddy Simulation
  • Mach Number
  • Mechanical Properties
  • Mechanics
  • Reynolds Number

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Mechanics and Fluid Dynamics.
  • Mathematics or Statistics