Need solutions for 8.5 and 8.6 8.5 The friction factor for a 25 mm diameter 11.5 m long pipe is 0.004. The conditions of air at entryareP₁ = 2.0 bar, T₁ = 301 K, M₁ = 0.25Determine the mass flow rate, and the pressure, temperature and the Mach number at exit.1.002 bar, T₂ = 290.8 K, M₂ = 0.49).(m = 0.098 kg/s, P2-8.6 Repeat Example 8.4 for a gas having y = 1.3 and R = 0.469 kJ/kg-K. The values calculated aregiven in Table 8.6.Table 8.6 Comparison of isothermal and adiabatic flowsLmaxLmetremetreProcessIsothermalAdiabatic87 AL5.79M=0.5P2bar2.143M = 0.76.5352.107M=0.5 M=0.7T₂K3126.618Mt = 0.877301.58P₁bar1.711.425T₁K312281.588.139M* = 1con coefficient of friction of 0.003. Air enters the pipe Example 8.4. Air enters a long circular duct (d = 12.5 cm, f = 0.0045) at a Mach number0.5, pressure 3.0 bar and temperature 312 K. If the flow is isothermal throughout the ductdetermine (a) the length of the duct required to change the Mach number to 0.7, (b) pressure andtemperature of air at M = 0.7, (c) the length of the duct required to attain limiting Mach number,and (d) state of air at the limiting Mach number.Compare these values with those obtained in adiabatic flow.Solution. (a)4f LmaxD4f LmaxDM₂4fLDM₁ = 0.5==1-YM²YM²1-1.4 x 0.251.4 x 0.251-1.4 x 0.491.4 x 0.49-+ In YM²+ ln 1.4 x 0.25 = 0.807+ In 1.4 x 0.49 = 0.0808= 0.807-0.0808 = 0.7262SECCneT

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8.5 The friction factor for a 25 mm diameter 11.5 m long pipe is 0.004. The conditions of air at entry are P₁ = 2.0 bar, T₁ = 301 K, M₁ = 0.25 Determine the mass flow rate, and the pressure, temperature and the Mach number at exit. (m = 0.098 kg/s, p₂ = 1.002 bar, T₂ = 290.8 K, M₂ = 0.49).

8.5 The friction factor for a 25 mm diameter 11.5 m long pipe is 0.004. The conditions of air at entry are P₁ = 2.0 bar, T₁ = 301 K, M₁ = 0.25 Determine the mass flow rate, and the pressure, temperature and the Mach number at exit. (m = 0.098 kg/s, p₂ = 1.002 bar, T₂ = 290.8 K, M₂ = 0.49).

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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