The Effect of Tube Length on Wave Phenomena in an H-S Tube

Abstract

The unsteady, one-dimensional flow in an H-S tube was calculated using the Random-Choice Method, in which the wall friction and the heat transfer wre taken into account. In particular, the effect of the length of the tube was examined, and the following conclusions were drawn: 1. The amplitude of the pressure oscillation decreases with an increase in the tube length. 2. for a tube of L=10m, the initial penetration length of the contact surface is 60% of the tube length measured from the open end, and after the interference of the contact surface with the shock wave, it becomes stationary without flow oscillation. 3. The maximum penetration length of the contact surface for a tube of L=1m is 37% of the tube length.