Numerical Discuss to Complete Empirical Correlation in Langtry’s Transition Model

ZHANG Xiao-dong; GAO Zheng-hong

doi:10.3879/j.issn.1000-0887.2010.05.005

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ZHANG Xiao-dong, GAO Zheng-hong. Numerical Discuss to Complete Empirical Correlation in Langtry’s Transition Model[J]. Applied Mathematics and Mechanics, 2010, 31(5): 544-552. doi: 10.3879/j.issn.1000-0887.2010.05.005

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Numerical Discuss to Complete Empirical Correlation in Langtry’s Transition Model

doi: 10.3879/j.issn.1000-0887.2010.05.005

ZHANG Xiao-dong¹,
GAO Zheng-hong²

School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, P. R. China;
National Key Wing Tunnel Laboratory, Northwestern Polytechnical University, Xi'an 710072, P. R. China

Received Date: 1900-01-01
Rev Recd Date: 2010-04-01
Publish Date: 2010-05-15

Abstract

Abstract

Recently, introducing a transition predicting model in to RANS environment was paidore and more attention to. Langtry proposed a correlation-based transition model in 2006,which was built strictly on local variables. However, two core correlations had not been pubished by the originator of the model until 2009. The mechanism of this transition model was anlyzed and discussed, after a series of numerical validations in skin friction coefficien to fflatlate boundary layers, a new correlation based on freestream turbulence in ten sity was developed, and the empirical correlation of transition onset momentum thickness Reynold number aiming at the hyperson ic transition was miproved. Finally, low-speed/transonic airfoil and a hypersonic double wedge flatare tested to prove the reliability and practicab ility of this correlation.
- transition empirical correlation,
- T3 series flat expermient,
- S809 airfoil,
- HS0213 air-foil,
- hypersonic double wedge flat

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References(19)

References

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