DNS of transition in supersonic boundary layers

Suman Muppidi, Krishnan Mahesh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

This paper performs Direct Numerical Simulation of transition induced by blowing and suction in a spatially evolving Mach 2.25 supersonic boundary layer. We use a novel algorithm (Park & Mahesh 2007) capable of solving compressible flow on unstructured grids. Our objective is to evaluate our unstructured capability to simulate supersonic transition. Transition is achieved using controlled periodic fluctuations over a region of the wall. It is observed that the applied perturbation produces streamwise vortices which breakdown to produce a turbulent boundary layer. The results of the turbulent region are compared to available data and a good agreement is obtained. The transition process is highly unsteady and localized, and the paper presents the sensitivity of the transition location to the streamwise mesh resolution.

Original languageEnglish (US)
Title of host publication40th AIAA Fluid Dynamics Conference
StatePublished - Dec 2 2010
Event40th AIAA Fluid Dynamics Conference - Chicago, IL, United States
Duration: Jun 28 2010Jul 1 2010

Publication series

Name40th AIAA Fluid Dynamics Conference

Other

Other40th AIAA Fluid Dynamics Conference
CountryUnited States
CityChicago, IL
Period6/28/107/1/10

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