Analysis of different approaches to modeling of nozzle flows in the near continuum regime

E. V. Titov, Deborah Levin Fliflet, N. E. Gimelshein, S. F. Gimelshein

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

Abstract

Conical nozzle flows are studied for Reynolds numbers of 1,230 and 12,300 using different numerical techniques: the direct simulationMonte Carlo method, Navier-Stokes/CFD that accounts for wall temperature jump and velocity slip, and statistical and deterministic approaches of the BGK equation. Detailed comparisons of the efficiency, stability, accuracy, and convergence of the employed numerical techniques provides better understanding of their benefits and deficiencies, and assists in selecting the most appropriate technique for a particular nozzle and flow application. The deterministic solution of the BGK equation was found to be in good agreement with the benchmark DSMC results, while there were some differences observed between the statistical BGK and DSMC. The Navier-Stokes solution differs from DSMC in the boundary layer.

Original languageEnglish (US)
Title of host publication46th AIAA Aerospace Sciences Meeting and Exhibit
StatePublished - Dec 1 2008
Externally publishedYes
Event46th AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 7 2008Jan 10 2008

Publication series

Name46th AIAA Aerospace Sciences Meeting and Exhibit

Other

Other46th AIAA Aerospace Sciences Meeting and Exhibit
CountryUnited States
CityReno, NV
Period1/7/081/10/08

ASJC Scopus subject areas

  • Aerospace Engineering

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  • Cite this

    Titov, E. V., Levin Fliflet, D., Gimelshein, N. E., & Gimelshein, S. F. (2008). Analysis of different approaches to modeling of nozzle flows in the near continuum regime. In 46th AIAA Aerospace Sciences Meeting and Exhibit [2008-0750] (46th AIAA Aerospace Sciences Meeting and Exhibit).