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HI Rigid Water Column Theory
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air chamber applied booster pump boundary conditions calculated cause cavitation check valve closed valve column separation COMPUTE H computer program configuration conservation of mass constant CONTINUE curve diameter DIMENSION discharge DOWNSTREAM END EL-HGL elastic ELEVATION engineer example flow rates fluid following equation friction g dt gate valve gives Hardy Cross head loss HNEW hydraulic initial air volume INTERIOR NODES interpolation ITERATIONS liquid loop method of characteristics MINIMUM HEADS Newton-Raphson NODES NPARTS NPIPES NPSH NUMBER OF PIPES NUNIT occurs one-way surge tank pipe networks pipe system pipeline points pressure head propagation PUMP CHARACTERISTIC pump power failure RESERVOIR result s-t plane series pipe set of equations shown in Figure simple pipe situation solution solve steady sudden valve closure SURGE VALVE technique three-pipe junction TRANSIENT ANALYSIS UPSTREAM END values velocity VISCOS water hammer analysis water hammer pressures wave speed WRITE zero