Study on the Formation and Evolution of Asymmetrical Vortex Structures in the Late Transitional Boundary Layer
Liutex and Third Generation of Vortex Definition and Identification: An Invited Workshop from Chaos 2020, Page: 239-149
2021
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Book Chapter Description
The objective of this research is to study the evolution of coherent structures in the late transitional boundary layer. A DNS (direct numerical simulation) of compressive fluid flow at Mach 0.5 on a flat plate, with only TS waves as input in the inlet (without additional asymmetric perturbations such as suction and blowing at wall boundary) is conducted to investigate nonlinear growth of the large vortex structures in the late transitional boundary. The mechanisms of the development of asymmetric coherent structures in the boundary layer are studied in detail. The evolution of the asymmetrical vortex structures and their role on the further randomization of the boundary layer are also investigated. It is found that the growth of streamwise asymmetric perturbations in the boundary layer influences the formation and development on the asymmetrical vortex structures and the boundary layer loses its symmetrical distribution in spanwise direction immediately after the asymmetric vortex structures is formed in the flow.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85171019483&origin=inward; http://dx.doi.org/10.1007/978-3-030-70217-5_15; https://link.springer.com/10.1007/978-3-030-70217-5_15; https://link.springer.com/content/pdf/10.1007/978-3-030-70217-5_15; https://dx.doi.org/10.1007/978-3-030-70217-5_15; https://link.springer.com/chapter/10.1007/978-3-030-70217-5_15
Springer Science and Business Media LLC
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