Consider the wedge of Fig E73 Rotate the wedge clockwise by

Consider the wedge of Fig. E7.3. Rotate the wedge clockwise by 15 deg (angle of attack). The streamwise length of the wedge is 1 m. The expansion wave formed over the wedge under 15 deg angle of attack will be reflected from the edge of jet as an oblique shock wave. Sketch the waves, the edge of jet, and flow field (streamlines). Find pressure and Mach number in regions 1, 2, 3, and 4 (below the wedge). Determine the lift and drag forces for a unit length normal to the plane of paper.

Solution

From the above given data

Mach number for regin 1 = 1.3

Mach number for regin 2 = 3.2

Mach number for regun 3= 2.2