Question

(3) As shown in the figure below, wind blows at a uniform, constant velocity of 60 mph over a six foot diameter, air- tight Quonset hut is located on a flat plain. Assume 2d, inviscid, irrotational flow and that the density of the air is 0.002 slug/ft? Voo a. Where on the surface of the hut should the vent A be located so that the pressure inside the hut is equal to P? b. Find the difference in static pressure between the point B on the ground and point on the hut.

Answer 1

Solution Given doto : VA somph d= 12 in S-0.002 slug /gta ocity in polar - coordinate converting Pot Isivad of +2 svega Pse Po ta sva (-usmo) - © som egnesapoo 1-4sin?o=0 HSi๐s = \ sino = + < 10-30', 150 At B a=ar: Vya doo C-4) caso Vro-3000 PSB - lat 9² - 1 5(50²) [PB = P2-4502 card)

مA Si = . 2 ) ( a 7 . 0 C Vo = -√3val ( 1 - 3) كم 15 م) = c م -مع = | 4S - مهدی - = 8 .. ۵s = 33 د (88) (300003 - 4 8/جد 1493 . 8 = 2 :. (4