Calculation of the Pressure Pulsations in an Expansion Joint of a Pipeline Through which a Liquid is Passed

The pressure pulsations in a working liquid flowing through an expansion joint of a pipeline in a power installation were calculated. The vibration of the path of such an installation and the nonstationary flow of a compressible liquid in it were simulated with the use of original methods of the computational fluid dynamics and moving meshes. The calculation data obtained are in good agreement with the corresponding results of a natural experiment and numerical predictions made on the basis of a simplified analytical model.