Fluid transients in pipes. Pressure surge following booster pump trip. Suppression using pump bypass
Abstract
Data item ESDU 85044, Fluid Mechanics Sub-Series, gives a graphical method of estimating the magnitudes of the surge pressures following power failures to a booster pump that is protected by a one-way valve preventing reverse flow through the pump. The system may also be protected by a bypass which itself includes a one-way valve that closes when flow through the bypass falls to zero. The graphical methods allow the head and flow conditions to be found at the suction and discharge sides of the pump with or without the bypass circuit. The effect of pipe friction may be taken into account. A computer program in BASIC is included that also allow the pump run-down characteristics to be modeled and provides results for the pressure changes over the whole line. The use of the information is illustrated in a practical worked example.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1985
- Bibcode:
- 1985STIN...8627592.
- Keywords:
-
- Applications Programs (Computers);
- Fluid Flow;
- Graph Theory;
- Pipes (Tubes);
- Pressure Effects;
- Surges;
- Basic (Programming Language);
- Failure Modes;
- Flow Velocity;
- Minimax Technique;
- Pressure Heads;
- Fluid Mechanics and Heat Transfer