Velocity of pressure waves in deformable pipes
Water hammer
Article REF: BM4176 V1
Velocity of pressure waves in deformable pipes
Water hammer

Author : Marcel FRELIN

Publication date: January 10, 2002, Review date: September 1, 2016 | Lire en français

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3. Velocity of pressure waves in deformable pipes

3.1 Analysis of flow equation terms

The propagation speed of a pressure wave in a liquid contained inside a deformable pipe is lower than the celerity of sound. This difference is due to the pressure variation caused by the passage of the wave, which alters the cross-section of the pipe. In the case of gases, this influence is negligible.

To determine the propagation velocity of a pressure wave in a deformable pipe, the terms in ∂A∂t  et  Vρ∂A∂s...

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