Application of a new flow simulation methodology for supersonic axisymmetric wakes

R. D. Sandberg, H. F. Fasel

Research output: Contribution to conferencePaperpeer-review

5 Scopus citations

Abstract

The 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 Navler-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. Axisymmetric RANS calculations were performed for wakes at Re D = 60,000 and M = 2.46, employing both the standard K-ε model (STKE) and an explicit Algebraic Stress Model (EASMα) in order to evaluate the performance of each. Results of FSM calculations using the EASMα are compared to DNS results and to steady RANS calculations.

Original languageEnglish (US)
Pages4105-4114
Number of pages10
DOIs
StatePublished - 2004
Event42nd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 5 2004Jan 8 2004

Other

Other42nd AIAA Aerospace Sciences Meeting and Exhibit
Country/TerritoryUnited States
CityReno, NV
Period1/5/041/8/04

ASJC Scopus subject areas

  • Engineering(all)

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