抄録
The mechanism of the pressure fluctuation generated by the two phase flow through a capillary tube is studied by the numerical simulation method. The numerical simulation of a bubble behavior through expansion region in a pipes has been carried out by the C-CUP method coupled with CSF model and VOF method where a variable is given by the tangent function, as noise is caused by the compressible of gas-phase. This method can deal with incompressible and compressible two-phase flow including surface tension effect. The results show that pressure pulsation is caused by deformation of a bubble.
