chapter 12 hydraulic transient design for pipeline systems
chapter 12 hydraulic transient design for pipeline systems
chapter 12 hydraulic transient design for pipeline systems
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<strong>12</strong>.4 Chapter Twelve<br />
HYDRAULIC TRANSIENT DESIGN FOR PIPELINE SYSTEMS<br />
FIGURE <strong>12</strong>.1 Effect of wall thickness of various pipe materials on acoustic velocity<br />
in water pipes.<br />
<strong>12</strong>.3.1 Descriptions of Various Types of Valves<br />
Valves used <strong>for</strong> the control of liquid flow vary widely in size, shape, and overall <strong>design</strong><br />
due to vast differences in application. They can vary in size from a few millimeters in<br />
small tubing to many meters in hydroelectric installations, <strong>for</strong> which spherical and butterfly<br />
valves of very special <strong>design</strong> are built. The <strong>hydraulic</strong> characteristics of all types of<br />
valves, albeit different in <strong>design</strong> and size, can always be reduced to the same basic<br />
coefficients, notwithstanding fluid effects such as viscosity and cavitation. Figure <strong>12</strong>.2<br />
shows cross sections of some valve types to be discussed with relation to <strong>hydraulic</strong><br />
per<strong>for</strong>mance.<br />
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