A Numerical Research on a Compressibility-correlated Langtry's Transition Model for Double Wedge Boundary Layer Flows

A new compressibility correlation is introduced in the Langtry's local variable-based transition model to investigate the phenomenon on double wedge shock/boundary layer interactions. The computational analysis compared with experimental data has been made to assess the influence of the wall temperature and the leading edge nose radius on a hypersonic double wedge boundary layer. It has been found that the laminar boundary layer separation occurs on the first ramp. Furthermore, the wall temperature and the leading edge nose radius have remarkable influence on the separation characteristics in the kink. Comparison of the calculated pressure coefficient distribution and the boundary layer profile with the experimental data shows that better results can be achieved when using the modified transition model.