Swirl Flow in Cylindrical Chamber : 2nd Report. Energy Loss in Chamber and its Effect on Flow Characteristics

抄録

The potential theory has been used to analyze the flow characteristics of a swirl spray nozzle, but the theoretical results do not coincide with the experimental ones. One reason for this inconsistency is likely in the energy loss caused by a swirl flow in the vortex chamber. In order to investigate the energy loss, the energy distribution in swirl flow is studied and the flow characteristics of a swirl spray nozzle introducing this effect is analyzed, then the theoretical results are compared with the experimental ones. The results show that the energy loss in the cylindrical chamber is directly proportional to the difference in peripheral velocity head of the fluid, and the energy loss in the vortex chamber must be taken into account to evaluate the discharge coefficient of a swirl spray nozzle.