Secondary Instabilities of Görtler Vortices in High-Speed Boundary Layers
Jie Ren
Gebundenes Buch

Secondary Instabilities of Görtler Vortices in High-Speed Boundary Layers

Mechanisms and Flow Control on Laminar-Turbulent Transition

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This thesis first reveals the mechanism of Görtler instabilities and then demonstrates how transitions at hypersonic flows can be effectively controlled (either promoted or suppressed) with Görtler or Klebanoff modes. It focuses on understanding and controlling flow transitions from mild laminar to fully turbulent flows at high speeds-aspects that have become crucial at the dawn of an incredible era, in which hypersonic vehicles are becoming available. Once this occurs, it will be possible to travel from Beijing to Los Angeles within just 2 hours, and we will all live in a genuinely global v...