Carbon dioxide enters an adiabatic nozzle at 1200 K with a velocity of 75 m/s and leaves at 400 K. Assume constant specific heat

Question

3 years ago

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Carbon dioxide enters an adiabatic nozzle at 1200 K with a velocity of 75 m/s and leaves at 400 K. Assume constant specific heat

s at room temperature. Determine the Mach number at the inlet. The gas constant of carbon dioxide is R = 0.1889 kJ/kg·K and k = 1.288. The Mach number at the inlet is

Chemistry

1 answer:

Rama09 [41] · Answer 1 · 2022-02-01T10:48:03+03:00

Rama09 [41]3 years ago

6 0

Answer:

The Mach number at the inlet is 0.14

Explanation:

Mach number = v/a

v = 75 m/s

a = sqrt(kRT)

k = 1.288

R = 0.1889 kJ/kg.K = 0.1889×1000 = 188.9 J/kg. K

T = 1200 K

a = sqrt(1.288×188.9×1200) = sqrt(291963.84) = 540.34 m/s

Mach number = 75m/s ÷ 540.34m/s = 0.14