Evolution of disturbances in entropy layer on a blunted plate in supersonic flow

Alexander Fedorov; Anatoli Tumin

doi:10.2514/6.2002-2847

Evolution of disturbances in entropy layer on a blunted plate in supersonic flow

Alexander Fedorov, Anatoli Tumin

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

Linear and nonlinear stability analyses of the entropy layer over a blunted plate are discussed. Results of the linear stability theory are compared with the direct numerical solution of the Euler equations when a disturbance of prescribed frequency is imposed on the mean flow. A solver of the Euler equations based on the Space-Time CE/SE method predicts linear and nonlinear dynamics of unstable disturbances with high accuracy. A relatively coarse grid allows for simulation of nonlinear disturbances with the mass-flux amplitude up to 9%. The nonlinear effect demonstrates a trend to saturation of the entropy layer disturbances.

Original language	English (US)
Title of host publication	32nd AIAA Fluid Dynamics Conference and Exhibit
Publisher	American Institute of Aeronautics and Astronautics Inc.
ISBN (Print)	9781624101137
DOIs	https://doi.org/10.2514/6.2002-2847
State	Published - 2002
Event	32nd AIAA Fluid Dynamics Conference and Exhibit 2002 - St. Louis, MO, United States Duration: Jun 24 2002 → Jun 26 2002

Publication series

Name	32nd AIAA Fluid Dynamics Conference and Exhibit

Other

Other	32nd AIAA Fluid Dynamics Conference and Exhibit 2002
Country/Territory	United States
City	St. Louis, MO
Period	6/24/02 → 6/26/02

ASJC Scopus subject areas

Engineering (miscellaneous)
Aerospace Engineering

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10.2514/6.2002-2847

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Evolution of disturbances in entropy layer on a blunted plate in supersonic flow. / Fedorov, Alexander; Tumin, Anatoli.

32nd AIAA Fluid Dynamics Conference and Exhibit. American Institute of Aeronautics and Astronautics Inc., 2002. (32nd AIAA Fluid Dynamics Conference and Exhibit).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Fedorov, A & Tumin, A 2002, Evolution of disturbances in entropy layer on a blunted plate in supersonic flow. in 32nd AIAA Fluid Dynamics Conference and Exhibit. 32nd AIAA Fluid Dynamics Conference and Exhibit, American Institute of Aeronautics and Astronautics Inc., 32nd AIAA Fluid Dynamics Conference and Exhibit 2002, St. Louis, MO, United States, 6/24/02. https://doi.org/10.2514/6.2002-2847

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AB - Linear and nonlinear stability analyses of the entropy layer over a blunted plate are discussed. Results of the linear stability theory are compared with the direct numerical solution of the Euler equations when a disturbance of prescribed frequency is imposed on the mean flow. A solver of the Euler equations based on the Space-Time CE/SE method predicts linear and nonlinear dynamics of unstable disturbances with high accuracy. A relatively coarse grid allows for simulation of nonlinear disturbances with the mass-flux amplitude up to 9%. The nonlinear effect demonstrates a trend to saturation of the entropy layer disturbances.

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Evolution of disturbances in entropy layer on a blunted plate in supersonic flow

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