Project ForgeFluid Mechanics
Flow Through Pipes
GATE 2010
Easy
In Hagen-Poiseuille flow through a cylindrical tube, the radial profile of shear stress is
- Aconstant
- Bcubic
- Cparabolic
- linear
Explanation
τ(r)=(ΔP/2L)r — shear stress varies LINEARLY with radius, zero at the centerline and maximum at the wall (in contrast to the parabolic velocity profile).
Source: GATE CH 2010 (2010)
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