Which stress is caused by a flowing fluid exerting dynamic pressure on a conduit wall?

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Multiple Choice

Which stress is caused by a flowing fluid exerting dynamic pressure on a conduit wall?

Explanation:
Flowing fluid exerts a dynamic (inertial) pressure on the conduit wall. This dynamic pressure, often described by q = 1/2 ρv^2, translates into stress in the wall—flow stress. It differs from residual stress (locked in during manufacturing), thermal stress (from temperature gradients), and static pressure stress (due to steady, non‑dynamic pressure). The stress produced specifically by the motion of the fluid is flow stress, so that term best captures the situation.

Flowing fluid exerts a dynamic (inertial) pressure on the conduit wall. This dynamic pressure, often described by q = 1/2 ρv^2, translates into stress in the wall—flow stress. It differs from residual stress (locked in during manufacturing), thermal stress (from temperature gradients), and static pressure stress (due to steady, non‑dynamic pressure). The stress produced specifically by the motion of the fluid is flow stress, so that term best captures the situation.

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