Fig. 9
From: From primary instabilities to secondary instabilities in Görtler vortex flows
Isolines of normalized temperature disturbances of the varicose mode of 135 kHz (a,b) and the sinuous mode of 95 kHz (c,d) at various streamwise locations obtained by DNS (a,c) and PSE3D (b,d), together with the base flow (dashed lines). Critical layer (dashed red) and relative sonic line (dash-doted black) are also plotted in the row (b). The Roman numbers denote the streamwise locations (i) 136 mm, (ii) 167 mm, (iii) 197 mm, (iv) 228 mm, (v) 258 mm, (vi) 289 mm, (vii) 319 mm