Problem 13.15 - Problem 13.15[Difficulty 3 Given Flow in a...

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Problem 13.15 [Difficulty: 3] Given: Flow in a converging nozzle to a pipe Find: Plot of mass flow rate Solution: The given or available data is R = 287 J/kg · K k = 1.4 T 0 = 293 K p 0 = 101 kPa D t = 1 cm A t = 0.785 cm 2 Equations and Computations: The critical pressure is given by p * = 53.4 kPa Hence for p = 100 kPa down to this pressure the flow gradually increases; then it is constant pM T (K) cV = M · c = p / RT Flow Rate (kPa) (Eq. 13.7a) (Eq. 13.7b) (m/s) (m/s) (kg/m 3 ) (kg/s) 100 0.119 292 343 41 1.19 0.00383 99 0.169 291 342 58 1.18 0.00539 98 0.208 290 342 71 1.18 0.00656 97 0.241 290 341 82 1.17 0.00753 96 0.270 289 341 92 1.16 0.00838 95 0.297 288 340 101 1.15 0.0091 90 0.409 284 337 138 1.11 0.0120 85 0.503 279 335 168 1.06 0.0140 80 0.587 274 332 195 1.02 0.0156 75 0.666 269 329 219 0.971 0.0167 70 0.743 264 326 242 0.925
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This note was uploaded on 01/20/2012 for the course EGN 3353C taught by Professor Lear during the Fall '07 term at University of Florida.

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