1) Design a nozzle so as to expand 4 kg/s of air (R = 287 J/kgK, k = 1,4) in the design condition below: pi = 5 bar, T₁ = 400 K, c₁ = 80 m/s; p2 1 bar, T2 = 293 K. Also, evaluate the flow velocity at the nozzle exit in design conditions. With reference to the off-design conditions: pi°' = 1,7 bar, T1°' = 420 K, p2' = 1 bar, determine the mass-flow rate expanded by the nozzle and the flow outlet velocity. SIMPLE CONVERGENT NOZZLE 2 u m√pi/pi A pi k+1 敬 k+1 k-1 3 2 1 m= Aout m = At out р CONVERGENT-DIVERGENT (DE LAVAL) NOZZLE u m√pi/pi 5 4 Api 1 r 2 P2 28 3 2 A. A. A.' 1 k k+l k (1) √pi/pi k-1 2 √pi/Pi k+1 Aout = Au 1 m=Aout m = Ath मीन √Pi/Pi 28 A out Aout = Au Ath = Ar (2,3) k+1 k (1) k+1 k р P * k (2-5) k-1

1) Design a nozzle so as to expand 4 kg/s of air (R = 287 J/kgK, k = 1,4) in the design condition below: pi = 5 bar, T₁ = 400 K, c₁ = 80 m/s; p2 1 bar, T2 = 293 K. Also, evaluate the flow velocity at the nozzle exit in design conditions. With reference to the off-design conditions: pi°' = 1,7 bar, T1°' = 420 K, p2' = 1 bar, determine the mass-flow rate expanded by the nozzle and the flow outlet velocity. SIMPLE CONVERGENT NOZZLE 2 u m√pi/pi A pi k+1 敬 k+1 k-1 3 2 1 m= Aout m = At out р CONVERGENT-DIVERGENT (DE LAVAL) NOZZLE u m√pi/pi 5 4 Api 1 r 2 P2 28 3 2 A. A. A.' 1 k k+l k (1) √pi/pi k-1 2 √pi/Pi k+1 Aout = Au 1 m=Aout m = Ath मीन √Pi/Pi 28 A out Aout = Au Ath = Ar (2,3) k+1 k (1) k+1 k р P * k (2-5) k-1

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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