Effect of Freestream Noise on Hypersonic Crossflow-Induced Boundary-Layer Transition

Andrew Bustard; Thomas J. Juliano; Harrison B. Yates; Mark Noftz; Joseph Jewell

doi:10.2514/1.J060376

Effect of Freestream Noise on Hypersonic Crossflow-Induced Boundary-Layer Transition

Andrew Bustard
, Thomas J. Juliano
, Harrison B. Yates
, Mark Noftz
, Joseph Jewell

University of Notre Dame
Johns Hopkins University Applied Physics Laboratory
Purdue University

Research output: Contribution to journal › Article › peer-review

Abstract

Between the windward and leeward rays, boundary-layer transition on cones at angle of attack in hypersonic flow is dominated by the crossflow instability [1, 2], wherein stationary and/or traveling crossflow vortices develop and can breakdown into turbulence [3]. Stationary crossflow modes are caused by surface roughness or any other steady forcing and produce disturbances that are fixed in place on the surface [3–6]. Stationary vortices create a generalized inflection point in the velocity profile that is inviscidly unstable [7]. This distorted mean flow develops secondary instabilities, whose growth and breakdown is one path to turbulence [8–10]. Traveling crossflow modes are caused by freestream noise and/or turbulence, and cause vortical disturbances that convect with the bulk flow [3].

Original language	American English
Journal	AIAA Journal
DOIs	https://doi.org/10.2514/1.J060376
State	Published - Jan 1 2022

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Effect of Freestream Noise on Hypersonic Crossflow-Induced Bounda

http://commons.erau.edu/publication/2484

Cite this

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title = "Effect of Freestream Noise on Hypersonic Crossflow-Induced Boundary-Layer Transition",

abstract = "Between the windward and leeward rays, boundary-layer transition on cones at angle of attack in hypersonic flow is dominated by the crossflow instability [1, 2], wherein stationary and/or traveling crossflow vortices develop and can breakdown into turbulence [3]. Stationary crossflow modes are caused by surface roughness or any other steady forcing and produce disturbances that are fixed in place on the surface [3{\textendash}6]. Stationary vortices create a generalized inflection point in the velocity profile that is inviscidly unstable [7]. This distorted mean flow develops secondary instabilities, whose growth and breakdown is one path to turbulence [8{\textendash}10]. Traveling crossflow modes are caused by freestream noise and/or turbulence, and cause vortical disturbances that convect with the bulk flow [3].",

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AU - Bustard, Andrew

AU - Juliano, Thomas J.

AU - Yates, Harrison B.

AU - Noftz, Mark

AU - Jewell, Joseph

PY - 2022/1/1

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N2 - Between the windward and leeward rays, boundary-layer transition on cones at angle of attack in hypersonic flow is dominated by the crossflow instability [1, 2], wherein stationary and/or traveling crossflow vortices develop and can breakdown into turbulence [3]. Stationary crossflow modes are caused by surface roughness or any other steady forcing and produce disturbances that are fixed in place on the surface [3–6]. Stationary vortices create a generalized inflection point in the velocity profile that is inviscidly unstable [7]. This distorted mean flow develops secondary instabilities, whose growth and breakdown is one path to turbulence [8–10]. Traveling crossflow modes are caused by freestream noise and/or turbulence, and cause vortical disturbances that convect with the bulk flow [3].

AB - Between the windward and leeward rays, boundary-layer transition on cones at angle of attack in hypersonic flow is dominated by the crossflow instability [1, 2], wherein stationary and/or traveling crossflow vortices develop and can breakdown into turbulence [3]. Stationary crossflow modes are caused by surface roughness or any other steady forcing and produce disturbances that are fixed in place on the surface [3–6]. Stationary vortices create a generalized inflection point in the velocity profile that is inviscidly unstable [7]. This distorted mean flow develops secondary instabilities, whose growth and breakdown is one path to turbulence [8–10]. Traveling crossflow modes are caused by freestream noise and/or turbulence, and cause vortical disturbances that convect with the bulk flow [3].

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JO - AIAA Journal

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