Hydrodynamic Analysis for the Morphing Median Fins of Tuna during Yaw Motions

Figure 9

The pressure contours of the tuna body on the cut plane of  m at a yaw angle of 9.5° in the depression and erection states, respectively: (a) the pressure contour of the body when all the medians are depressed; (b) the pressure contour of the body when all the medians are erected. Note: the white ellipses are the cut sections of the body and second dorsal fin, respectively.