GATE XE · 2018 · XE-B
Question 20: Internal Flows
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Question 20
XE-BNAT2 marksNeeds review
The skin friction coefficient for a turbulent pipe flow is defined as,
, where τ_w is the wall shear stress and V is the average flow velocity. The value of C_f is empirically given by the relation:
, where Re is the Reynolds number. If the average flow velocity is 10 m/s, diameter of the pipe is 250 mm, kinematic viscosity of the fluid is 0.25×10⁻⁶ m²/s, and density of the fluid is 700 kg/m³, the skin friction drag induced by the flow over 1 m length of the pipe, in N, is __________.Log in to check the answer
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2018XE-B
GATE XE 2018 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-B
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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