A “Laminar + Transition Criteria” Model for Hypersonic Three-Dimensional Boundary Layer Transition Prediction

Ling Zhou; Chao Yan; Zi Hui Hao; Wei Xuan Kong

doi:10.4028/www.scientific.net/AMM.798.627

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 798A “Laminar + Transition Criteria” Model for...

A “Laminar + Transition Criteria” Model for Hypersonic Three-Dimensional Boundary Layer Transition Prediction

Abstract:

A “laminar + transition criteria” model utilizing Re_θ/M_e and Re_CF criteria in conjunction with an intermittency function Γ is developed in this paper. With pretreated computational grid and total enthalpy h₀=(h_0,∞)_max criteria the boundary layer edge and crossflow velocity can be obtained by using parallel methodology. Validation is accomplished via HIFiRE-5 and a blunt cone with small angle of attack. Results show that computed Re_θ/M_e and Re_CF distributions are similar to the N-factor for streamwise instability and crossflow instability from linear PSE methods. The shape and trend of transition regions predicted by the “laminar + transition criteria” model in HIFiRE-5 and blunt cone are in good agreement with the experiment and DNS. However, for the transition induced by inflection point on streamwise velocity profiles, using criteria related to boundary layer thickness is inappropriate and can predict transition onset prematurely.

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Periodical:

Applied Mechanics and Materials (Volume 798)

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627-631

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.798.627

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Online since:

October 2015

Authors:

Ling Zhou*, Chao Yan, Zi Hui Hao, Wei Xuan Kong

Keywords:

Boundary Layer, Crossflow, Hypersonic, Transition Criteria

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