Two-dimensional Navier Stokes simulations of instability waves in a flat plate boundary layer flow at M = 4.5

Persistent Link:
http://hdl.handle.net/10150/278125
Title:
Two-dimensional Navier Stokes simulations of instability waves in a flat plate boundary layer flow at M = 4.5
Author:
Gottmann, Matthias, 1964-
Issue Date:
1992
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
This thesis addresses the investigation of mechanisms involved in the transition from laminar to turbulent flow. The flow studied is a compressible flat plate boundary layer at a free stream velocity of M = 4.5. The two-dimensional compressible unsteady Navier Stokes equations are solved numerically in a rectangular region at a distance downstream from the leading edge. Disturbances are introduced by periodical suction and blowing through a slot in the wall. These disturbances propagate downstream in the flow field. At every point in the flow field the response of the flow is analyzed using a Fourier analysis in time. Results obtained are interpreted with reference to linear stability theory. One important result is the existence of multiple undamped waves for one wave frequency. The second important result demonstrates that an amplified wave of a certain frequency can generate disturbances at multiples of its frequency which may then be amplified more strongly.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Engineering, Aerospace.; Engineering, Mechanical.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College
Degree Grantor:
University of Arizona
Advisor:
Fasel, Hermann F.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleTwo-dimensional Navier Stokes simulations of instability waves in a flat plate boundary layer flow at M = 4.5en_US
dc.creatorGottmann, Matthias, 1964-en_US
dc.contributor.authorGottmann, Matthias, 1964-en_US
dc.date.issued1992en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThis thesis addresses the investigation of mechanisms involved in the transition from laminar to turbulent flow. The flow studied is a compressible flat plate boundary layer at a free stream velocity of M = 4.5. The two-dimensional compressible unsteady Navier Stokes equations are solved numerically in a rectangular region at a distance downstream from the leading edge. Disturbances are introduced by periodical suction and blowing through a slot in the wall. These disturbances propagate downstream in the flow field. At every point in the flow field the response of the flow is analyzed using a Fourier analysis in time. Results obtained are interpreted with reference to linear stability theory. One important result is the existence of multiple undamped waves for one wave frequency. The second important result demonstrates that an amplified wave of a certain frequency can generate disturbances at multiples of its frequency which may then be amplified more strongly.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectEngineering, Aerospace.en_US
dc.subjectEngineering, Mechanical.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorFasel, Hermann F.en_US
dc.identifier.proquest1348498en_US
dc.identifier.bibrecord.b27588683en_US
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