1.

Record Nr.

UNINA9910299561103321

Autore

Ren Jie

Titolo

Secondary Instabilities of Görtler Vortices in High-Speed Boundary Layers : Mechanisms and Flow Control on Laminar-Turbulent Transition / / by Jie Ren

Pubbl/distr/stampa

Singapore : , : Springer Singapore : , : Imprint : Springer, , 2018

ISBN

981-10-6832-1

Edizione

[1st ed. 2018.]

Descrizione fisica

1 online resource (XVIII, 94 p. 51 illus., 41 illus. in color.)

Collana

Springer Theses, Recognizing Outstanding Ph.D. Research, , 2190-5053

Disciplina

629.13232

Soggetti

Fluid mechanics

Mechanics

Applied mathematics

Engineering mathematics

Engineering Fluid Dynamics

Classical Mechanics

Mathematical and Computational Engineering

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di bibliografia

Includes bibliographical references at the end of each chapters.

Sommario/riassunto

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 village—and not just virtually, but physically. Görtler instabilities have often been used to promote flow transition in hypersonic vehicles. However, how Görtler instabilities are excited and how they evolve in hypersonic flows are questions that have yet to be answered.