A steel penstock 60 cm in diameter has a shell thickness of 1.2 cm. The modulus of elasticity of the pipe shell material is 2.1 x 106 kgf/cm2 (2.1 x 105 N/mm2) with Poisson's ratio of 1/4, and the volume modulus of elasticity of water is 2.1 x 10 kgf/cm² (2.1x 103 N/mm²). The pipe is designed to discharge water at mean velocity of 2.1 m/ sec. Determine the water hammer pressure rise caused by sudden closure of the valve at the downstream end; (1) neglecting the elasticity of the pipe material; and (2) considering also the elasticity of the pipe material.

A steel penstock 60 cm in diameter has a shell thickness of 1.2 cm. The modulus of elasticity of the pipe shell material is 2.1 x 106 kgf/cm2 (2.1 x 105 N/mm2) with Poisson's ratio of 1/4, and the volume modulus of elasticity of water is 2.1 x 10 kgf/cm² (2.1x 103 N/mm²). The pipe is designed to discharge water at mean velocity of 2.1 m/ sec. Determine the water hammer pressure rise caused by sudden closure of the valve at the downstream end; (1) neglecting the elasticity of the pipe material; and (2) considering also the elasticity of the pipe material.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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