A flow simulation methodology for compressible turbulent axisymmetric wakes

E. D. Sandberg, H. F. Fasel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A new Flow Simulation Methodology (FSM) is employed to investigate the wake behind axisymmetric bodies with a blunt base at supersonic speeds. The centerpiece of the FSM is a strategy to provide the proper amount of modelling of the subgrid scales. This is accomplished by a "contribution function" which locally and instantaneously compares the smallest relevant scales to the local grid size. The underlying compressible Navier-Stokes code in cylindrical coordinates employs high-order accurate finite differences and a high-order accurate axis treatment. The code also incorporates fully three-dimensional transport equations for turbulent kinetic energy and turbulent dissipation including compressible extensions and a state-of-the-art Reynolds stress model. FSM calculations are performed for M = 2.46 and ReD = 30,000 and are compared to DNS data obtained with essentially the same code. In addition, the FSM calculations are compared to steady RANS calculations using the standard K - ε model (STKE) and an explicit Algebraic Stress Model (ASM). Preliminary results for axisymmetric RANS calculations at M = 2.46 and ReD = 3,300,000 are shown. For this Reynolds number, the focus was on testing the turbulence model that would later be used for FSM calculations.

Original languageEnglish (US)
Title of host publication41st Aerospace Sciences Meeting and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624100994
DOIs
StatePublished - 2003
Event41st Aerospace Sciences Meeting and Exhibit 2003 - Reno, NV, United States
Duration: Jan 6 2003Jan 9 2003

Publication series

Name41st Aerospace Sciences Meeting and Exhibit

Other

Other41st Aerospace Sciences Meeting and Exhibit 2003
CountryUnited States
CityReno, NV
Period1/6/031/9/03

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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