抄録
A new approach is proposed to investigate the frequency response of fluid in piping systems which include elements of complex geometry, A panel method was applied to the complex element and its adjacent parts, to make three-dimensional calculations. At both ends of the region in consideration, the assumption of a plane wave was employed. If the boundary condition is assigned at one end, the condition at the other end is determined from the law of mass conservation over the whole region in consideration. The employment of this condition, which has not been considered in the literature, is the feature of the present method. Numerical examples are shown for a divergent-convergent pipe element and for a strongly curved S-shaped bend.
