Chapter 17   Unsteady flow of liquids in pipes

 

 

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Contents:-

 

Introduction

 

Slow changes in flow

 

Sudden opening of a valve

 

Slow opening or closing of a valve

 

Sudden closing and slow closing of a valve

 

Behaviour of water in a pipe following sudden closure of a valve

 

Speed of propagation of a wave front

 

Effect of friction on the pressure/time trace

 

The concepts of rapid and slow closure

 

Water hammer

 

Other aspects of transient flow in pipes

 

Implications of this chapter

 

The hydraulic ram

 

Worked examples