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Simulation und virtuelle Realität

  • Otto von Estorff
  • Marian Markiewicz
  • Ali Özkan
  • Olgierd Zaleski
  • Reinhard Blumrich
  • Klaus Genuit
  • André Fiebig
Chapter
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Zusammenfassung

Mit Hilfe akustischer Berechnungen ist es möglich, aufwendige Messungen an Fahrzeugprototypen deutlich zu reduzieren. Dieses Kapitel gibt einen kurzen Überblick über die wichtigsten derzeit verfügbaren Methoden. Dabei wird zunächst auf Elementverfahren, wie die Finite-Elemente-Methode (FEM) und die Boundary-Elemente-Methode (BEM), näher eingegangen. Während diese vor allem im tieffrequenten Bereich eingesetzt werden, kommen bei höheren Frequenzen vermehrt Verfahren zum Einsatz, die auf Energieformulierungen beruhen. Exemplarisch wird hier die Funktionsweise und der Einsatz der Statistischen-Energie-Analyse (SEA) erläutert. Anhand von repräsentativen Beispielen werden die Einsatzmöglichkeiten und Grenzen der verschiedenen Verfahren aufgezeigt, wobei vor allem auch auf Vergleiche zwischen Rechnung und Messung eingegangen wird.

Abkürzungen

AAA

Aeroakustische Analogien

BEM

Boundary Element Method

CFD

Computational Fluid Dynamics

DES

Detached Eddy Simulation

DNS

Direkte Numerische Simulation

DS

Direkte Simulation

FEM

Finite Elemente Methode

HFE-WBM

Hybride FEM-WBM

LBM

Lattice-Boltzmann-Methode

LEE

Linearised Euler Equations

LES

Large Eddy Simulation

NSG

Navier-Stokes-Gleichungen

RANS

Reynolds averaged Navier-Stokes

SEA

Statistische Energie-Analyse

URANS

Unsteady Reynolds averaged Navier-Stokes

VLES

Very Large Eddy Simulation

WBM, WBT

Wave-Based Method/Technique

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© Springer-Berlin Heidelberg 2010

Authors and Affiliations

  • Otto von Estorff
    • 1
  • Marian Markiewicz
  • Ali Özkan
  • Olgierd Zaleski
  • Reinhard Blumrich
  • Klaus Genuit
  • André Fiebig
  1. 1.Institut für Modellierung und BerechnungTechnische Universität Hamburg-HarburgHamburgDeutschland

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