Integrating stanford university unstructured code with transition model

This paper presents the extension of the open source Stanford University Unstructured (SU
²
) software suite to perform transition prediction simulations, which are caused by either Tollmien-Schlichting streamwise instability or crossflow instability. The integrated equations, γ-Re
_θt
model and γ-Re
_θt
-CF model, solving computational fluid dynamics analysis are coupled with Spalart-Allmaras turbulence model. In order to validate and assess the accuracy of the model in predicting the boundary layer transition, a series of transition flows are simulated including S809 airfoil, 30P30N multi-element airfoil and 6:1 prolate spheroid standard model. The results show the modified SU
²
suite can predict transition accurately in various flow conditions such as natural transition and crossflow transition. The capacity and accuracy of the SU
²
software suite in the numerical simulation can be greatly enhanced.