STUDY ON ANALYSIS OF FLUID AROUND THE STRUCTURE USING PARTICLE METHOD AND VOF METHOD

Abstract

 In this study, we simulate a overflowing situation around a breakwater with MPS method, one of particle methods, and CADMAS-SURF (CS2D), and compare the calculation results for understanding characteristics of both methods as a basic study of a method that can analyze events for a tsunami-resistant breakwater design. In addition, a case of impermeability mound and two cases of impermeability and permeability mounds are calculated by MPS and CS2D method respectively.
 The mean velocity behind the breakwater shows a vertical distribution in both CS2D and MPS method, that is, there is a similar tendency between them, when the mound is impermeable. However, the velocity is maximum around the bottom of the mound in CS2D with impermeability. It is identified that the size of overflow depth makes a difference in the calculation accuracy, in each methods, for the maximum wave pressure which acts on the front of a breakwater. The MPS method adjusts the spatial waveform around the breakwater at the time of overflowing to the past previous results from CS2D.