Pseudo Two-Dimensional Analysis of Fluid-Structure Interaction due to Pressure Wave Propagation in Straight Pipe

抄録

A new computer program SPICA developed for evaluating fluid-structure interaction (FSI) due to pressure wave propagation in straight pipe is presented. In SPICA, equations of one, instead of two, dimensional fluid dynamics are coupled with those of two-dimensional structural dynamics. This simplification is expected to improve computing time significantly without reducing the accuracy of calculation.
The validity and the effectiveness of SPICA is shown by good agreement of the pressure time histories and deformations predicted by SPICA with the experimental results of FSI in straight pipe, and by the fact that the results are obtained with the computing time a factor of 100 smaller than that for conventional fully two-dimensional program. Finally, the limitation of the simplification used in SPICA is discussed briefly.