Question

c) A nozzle in a wind tunnel gives a test-section Mach number of 2.0. Alr etes th nozzle from a large reservoir at 0,69 bar and 310 K. The cross-sectional area of the throat is 1000 cm2. Determine the following quantities for the tunnel for one dimensional isentropic flow i) Pressures, temperature and velocities at the throat and test sections, i) Area of cross-section of the test section, Sim) Mass flow rate, F rate required to drive the compressor

Answer 1

2 be s supeisonic through ot test section 요 = .。.5283. Po REr= 0.5283 Xo , 69 0.40227 ban Tehato. 8333 To thyoct Velocity= M(1RT -3xwux 28TX 258132 322.169 ms V

At M 2, Funom) Tables O 1218 0 . 5556 T05556x6IO 小4x287x 112-25 526012 m

() At M 2 1.688 A*, Atrsoek A1 638X 1000 RT Kg =-15-8245 kgb. Peuer re quisned Iv) P. = mcp (Tout-Tin ) 15.818 xIo0s(172.33 258 32) P136q4 KJ to the compren