Research On Hydraulic Pressure Field And Wave's Diffuse Caused By A Partial Pulse Under The Water

The foundational problems are the study of variety mechanism of hydraulic pressure field caused by boundary pulse and of the wave appearance and the spread mechanism which arouse from the variety, when doing the research on the creation and dissemination of the tsunami and of breakage to the ocean engineering building caused by the tsunami. The water pressure field which caused by the tsunami have the unavailable estimate influence to the safeties of the underwater work and the diving machine. Therefore, that the bottom of water partial boundary pulse sport cause the water pressure field and the research of surface wave dissemination mechanism have the profound meaning to the further study of tsunami occurrence, early warning and disasters prevention. Addition, the water pressure mechanism of the partial boundary pulse sport has the actual meaning towards studying the safe protection and valuations of the underwateroperation system.In this paper using FLUENT software, dynamic mesh technology was used to simulate the partial boundary pulse's sport under the water. And the change of the water pressure field was analyzed, which caused by the partial boundary pulse's sport under the water. The based foundation was expected to establish for the further study of the Hydrodynamic forces problem which caused by the partial boundary pulse's sport under the water.To the simulation of Hydrodynamic forces which caused by the partial boundary pulse's sport under the water, the first problem is to solve the motion of the boundary. In this paper, taken the pulse function as the control condition, the model of boundary pulse's sport was built; the simulation of the wave and Hydrodynamic forces' change was done by the UDF of FLUNET.There are numerous factors impact the partial boundary pulse's sport under the water . In this paper, the displacement of pulse-boundary, velocity, pulse boundary size and the depth of water were chosen to simulate the wave and Hydrodynamic forces' change which caused by the partial boundary pulse's sport under the water. And it was analyzed that the variety regulation of hydraulic pressure field caused by the pulse's sport.