Pressure Pulsations in Turbo-pump Piping Systems : 1st Report, Experiments on the Natural Frequencies of the Liquid Columns in Centrifugal Pump Piping Systems

Abstract

Experiments were made on the natural frequencies of liquid columns in piping systems with tanks at both ends and with a double suction volute pump between the tanks. The natural frequencies of the liquid columns in the pump piping systems depend on the dimensions of the suction and discharge pipes, and the size of the pump. By replacing the pump by an equivalent pipe, the natural frequencies of liquid columns are not affected substantially by the rate of discharge and the rotating speed of the pump.