Define stream fuction 10b 18p 4,=p2sin080 u8=一 rsine or For inviscid potential flow 2simn20-Psin20 Wr2 4,=-Wcos0- 2D T3 cos 0 D uo =+W sine-s sin D 6=-W'r cos+cose• Define stream fuction • For inviscid potential flow