Ontology type: schema:ScholarlyArticle
2021-09-05
AUTHORSYonghua Yan, Yong Yang, Caixia Chen, Herious A. Cotton, Alitzel Serrano
ABSTRACTMicro vortex generator (MVG) is a kind of robust and practical devices used to control the boundary layer. This research implements a set of large eddy simulations (LES) on the flow field in the downstream of the micro vortex generator (MVG) in supersonic flows with different Mach numbers. In this study, the downstream flow field affected by MVG at different Mach numbers was analyzed in detail, especially the large vortex structure generated in the upper boundary layer that plays a very important role in shock boundary layer interaction (SBLI). Studies have found that the incoming Mach number does not have a major impact on the generation mechanism of ring-like vortices, but it will affect the strength and length of the momentum deficit behind the MVG, thereby affecting the position of the vortex structure relative to the boundary layer and its intensity. At a high Mach number, the momentum deficit is located closer to the lower boundary layer so that the resulting upper vortex structure has more opportunity to interact with the structure in the lower boundary layer. This makes the upper vortex structure more distorted. Moreover, the power spectrum analysis of the frequency of ring-like vortices generated at different Mach numbers was also conducted in this research. More... »
PAGES3-18
http://scigraph.springernature.com/pub.10.1007/s13160-021-00484-w
DOIhttp://dx.doi.org/10.1007/s13160-021-00484-w
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