Theses and Dissertations
Advisor
Sescu, Adrian
Committee Member
Shinde, Vilas
Committee Member
Khare, Vivek
Date of Degree
8-7-2025
Original embargo terms
Immediate Worldwide Access
Document Type
Graduate Thesis - Open Access
Major
Aerospace engineering
Degree Name
Master of Science (M.S.)
College
James Worth Bagley College of Engineering
Department
Department of Aerospace Engineering
Abstract
Görtler vortices are counterrotating flow structures generated as a result of the imbalance between the wall radial pressure gradients and the centrifugal forces in a boundary layer developing on a curved surface. Their presence leads to secondary instabilities and increases the wall shear stress as they accelerate the transition from laminar to turbulent flow. These secondary instabilities can be mitigated using control techniques aimed at decreasing the energy and the wall shear stress. In this thesis, the combined effect of wall temperature and transpiration on Görtler vortices developing in supersonic and hypersonic boundary layers is investigated. Görtler vortices are excited by a low initial disturbance applied in proximity to the leading edge, followed by a sinusoidal temperature distribution that controls the energy and wall shear stress. The results show that the wall temperature distribution alone or in combination with wall transpiration has a significant effect on the vortex energy and wall shear stress
Recommended Citation
Ahaggach, Asmaa, "The effect of wall temperature and transpiration on Görtler vortices in high-speed boundary layers" (2025). Theses and Dissertations. 6604.
https://scholarsjunction.msstate.edu/td/6604
