Large Eddy and Detached Eddy Simulations Using an Unstructured Multigrid Solver

Abstract

This work is concerned with the development of an efficient parallel Large Eddy Simulation (LES) and Detached Eddy Simulation (DES) capability using unstructured meshes. The advantages of unstructured meshes include flexible modeling of complex geometries, adaptive meshing capabilities, and homogeneous data structures well suited for massively parallel computer architectures. On the other hand, unstructured mesh techniques require additional computer resources as compared to cartesian or structured mesh methods, and the achievable accuracy of the particular unstructured mesh discretization must be carefully considered. The approach developed in this work is based on an existing steady-state unstructured mesh solver which relies on agglomeration multigrid for rapid convergence and has been shown to scale well on inexpensive personal computer (PC) clusters as well as on massively parallel supercomputers using thousands of processors1.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADP013664

Entities

People

  • Dimitri J. Mavriplis
  • Juan Pelaez
  • Osama Kandil

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Computations
  • Computers
  • Diameters
  • Equations
  • Experimental Data
  • Flow
  • Flow Fields
  • Fluid Flow
  • Fluid Mechanics
  • Large Eddy Simulation
  • Mechanical Properties
  • Reynolds Number
  • Simulations
  • Steady State
  • Strouhal Number

Fields of Study

  • Physics

Readers

  • Database Systems and Applications
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Mechanics and Fluid Dynamics.