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

E. V. Titov; D. A. Levin; N. E. Gimelshein; S. F. Gimelshein

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

E. V. Titov, D. A. Levin, N. E. Gimelshein, S. F. Gimelshein

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	46th AIAA Aerospace Sciences Meeting and Exhibit
State	Published - 2008
Externally published	Yes
Event	46th AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States Duration: Jan 7 2008 → Jan 10 2008

Publication series

Name	46th AIAA Aerospace Sciences Meeting and Exhibit

Other

Other	46th AIAA Aerospace Sciences Meeting and Exhibit
Country/Territory	United States
City	Reno, NV
Period	1/7/08 → 1/10/08

ASJC Scopus subject areas

Aerospace Engineering

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title = "Analysis of different approaches to modeling of nozzle flows in the near continuum regime",

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.",

author = "Titov, {E. V.} and Levin, {D. A.} and Gimelshein, {N. E.} and Gimelshein, {S. F.}",

year = "2008",

language = "English (US)",

isbn = "9781563479373",

series = "46th AIAA Aerospace Sciences Meeting and Exhibit",

booktitle = "46th AIAA Aerospace Sciences Meeting and Exhibit",

note = "46th AIAA Aerospace Sciences Meeting and Exhibit ; Conference date: 07-01-2008 Through 10-01-2008",

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T1 - Analysis of different approaches to modeling of nozzle flows in the near continuum regime

AU - Titov, E. V.

AU - Levin, D. A.

AU - Gimelshein, N. E.

AU - Gimelshein, S. F.

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

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M3 - Conference contribution

AN - SCOPUS:78149476509

SN - 9781563479373

T3 - 46th AIAA Aerospace Sciences Meeting and Exhibit

BT - 46th AIAA Aerospace Sciences Meeting and Exhibit

T2 - 46th AIAA Aerospace Sciences Meeting and Exhibit

Y2 - 7 January 2008 through 10 January 2008

ER -

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

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