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Pipeline Design for Water Engineers by David Stephenson

By David Stephenson

"... the ebook is at its most sensible within the layout and research sections and will stand on those on my own as a well-stocked guide with copious references for extra study," commented the magazine of the nationwide Water Council after booklet of an past version of Pipeline layout for Water Engineers.

This vintage monograph has been revised and up-to-date to take account of recent advancements within the box. fresh examine in cavitation and circulate keep watch over has brought on extra sections to be additional. There also are new sections on helps to uncovered pipes and secondary tension. extra references and a brand new structure make up this version. a few sections showing in prior versions, noteably on pipe community platforms research and optimization were ommitted as they have been thought of extra acceptable within the author's parallel publication ``Pipeflow Analysis'' (Developments in Water technology, 19).

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For p i p e s i n p a r a l l e l , assume a r e a s o n a b l e head l o s s and r e a d o f f t h e flow t h r o u g h each p i p e from t h e c h a r t . Read o f f t h e e q u i v a l e n t d i a m e t e r which would g i v e t h e t o t a l flow a t t h e s a m e head l o s s . For p i p e s i n s e r i e s , assume a r e a s o n a b l e f l o w and c a l c u l a t e t h e t o t a l head l o s s w i t h a s s i s t a n c e o f t h e c h a r t . Read o f f t h e e q u i v a l e n t p i p e d i a m e t e r which would d i s c h a r g e t h e assumed f l o w w i t h t h e t o t a l head l o s s a c r o s s i t s l e n g t h .

Thus the drawoffs are not simply tabulated as for the node iteration method. In addition to the methods of successive approximation, head losses and flows could be calculated by direct solution. A set of simultaneous equations relating flows and head losses is set up, and solved by established procedures such as the Gauss elimination method. Although computing time is reasonably short for this method, considerable time is needed to set up or revise the equations, and a large computer memory capacity is needed for solving the resulting matrix.

In addition to the methods of successive approximation, head losses and flows could be calculated by direct solution. A set of simultaneous equations relating flows and head losses is set up, and solved by established procedures such as the Gauss elimination method. Although computing time is reasonably short for this method, considerable time is needed to set up or revise the equations, and a large computer memory capacity is needed for solving the resulting matrix. Although analogue computers have been used to some extent in analysing networks, they are not as versatile as digital computers and have to be rewired for each network.

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