Evaluation of a displacement-body model for hypersonic shock-wave/boundary-layer interaction

In this thesis, a displacement-body model for strong-interaction shock-wave/boundary-layer interaction (SBLI) is presented and evaluated. The model considers 2-D flow over a flat plate with an adiabatic wall. The separation bubble is modeled as a displacement body with constant surface pressure, the value of which is set equal to the value of plateau pressure given by free-interaction theory. A shock-fitting method of characteristics is employed to numerically compute quantities in the inviscid outer flow. Boundary conditions that satisfy physical requirements at shock waves, slip lines, and solid walls are enforced. Accuracy of the model is shown for both laminar and turbulent flow regimes, as well as for Mach numbers in the hypersonic regime. Additionally, the model provides a physical explanation for the pressure drop observed downstream of reattachment in hypersonic flows.

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Aeronautics and Astronautics.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2018

Author dc:creator

• Lopez, Lee (Lee Gabriel)

Advisor dc:contributor.advisor

• Wesley L. Harris.

• Aeronautics and Astronautics.

Statement dc:rights

• MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/119306

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/119306