| Abstrakt: |
The performance of a differential surge tank was measured experimentally for various acceleration and retardation conditions, and the results were compared with those obtained analytically. In the experimental investigation, the dynamic pressures at several places in the hydraulic system, together with the turbine-gate positions, were recorded simultaneously on a multichannel oscillograph. For comparison, the corresponding water-hammer pressures and mass flows in the system were calculated by recognized step-by-step processes, adequate numbers of steps being made practicable by the use of high-speed digital computers. The calculated results agreed closely with those determined experimentally. |
