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http://dx.doi.org/10.5139/JKSAS.2010.38.2.099

Dynamic Correction of DES Model Constant for the Advanced Prediction of Supersonic Base Flow  

Shin, Jae-Ryul (부산대학교 항공우주공학과 대학원)
Choi, Jeong-Yeol (부산대학교 항공우주공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.38, no.2, 2010 , pp. 99-110 More about this Journal
Abstract
The DES analysis of strong compressibility flow, LES mode is intentionally performed in boundary layer with the conventional empirical constant $C_{DES}$ value of 0.65. In this study, an expression is suggested to determine the $C_{DES}$ value dynamically by using a distribution function of the ratio of turbulence length scale and wall distance which is used in S-A DDES model for RANS mode protection. The application of the dynamic $C_{DES}$ presents better prediction than previous results those used constant but different $C_{DES}$ values.
Keywords
Reynolds-Averaged Navier-Stokes(RANS); Detached Eddy Simulation(DES); Delayed Detached Eddy Simulation(DDES); Base Flow;
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Times Cited By KSCI : 1  (Citation Analysis)
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