The Shear Stress Across the Pipe of Circular Cross-Section is
By BYJU'S Exam Prep
Updated on: September 25th, 2023
The shear stress across the pipe of circular cross-section is-
- Constant over the cross-section.
- Zero at the wall and increases linearly to the center.
- Zero at the center and varies linearly with the radius.
- Varies parabolically across the section.
Table of content
Answer: C. Zero at the center and varies linearly with the radius
The shear stress across the pipe of circular cross-section is zero at the center and varies linearly with the radius.
Solution
Shear stress and velocity distribution across the pipe of circular cross-section can be expressed as:
Variation of shear stress in radial direction across the pipe of circular cross-section can be expressed as
Τ=-δp/δxr/2
-ve sign shows that pressure decreases in the longitudinal direction of the circular pipe.
Shear stress at center (ie. r=0) is zero
Shear stress at wall of pipe (ie. r=R) is maximum.
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