Relationship between Spacing Rasio and Stiffness Coefficient by Using Smoothed Particle Hydrodynamics Method to Simulate Water – Solid Interaction

Anisa Wulandari,Jessica Sjah,Herr Soeryantono,R.R Dwinanti Rika

doi:10.1051/e3sconf/20199502011

Abstract

Scouring Phenomenon directly occurs on materials due to the motion of water flow and water borne sediments that researchers in the world continue to investigate. Scouring are then continuously developed in Computational Fluid Dynamics (CFD) to be able to estimate scouring effects by analyzing interaction between fluid and solid. Water and solid interaction can be researched by realizing three dimensional numerical modeling (3D) using Smoothed Particle Hydrodynamics Method which is modeling and visualizing fluid behavior with a Lagrangian approach in particle scale (micro scale), a more particle approach realistic than the grid approach. Using this method, the results of each particle can be reviewed either by their property values or visually so that the results are obtained more representatives. One of the factors affecting fluid-solid modeling is spacing ratio between solid particle and fluid particle. To obtain the correct physical results, it is required to consider the influence of spacing ratio and the value of Stiffness Coefficient (Ks) needed.

Highlights

Definition of scouring in Sucipto (2004) [1] is the change of a stream accompanied by the transfer of material through the action of fluid motion
The analysis will be performed to determine the relationship between fluid distances and solid particles with the variation value of stiffness coefficients (Ks) to obtain correct physical behavior model
By using Ks equal to 5,000 N/m, the fluid particles can not recognize the solid particles for all models

Summary

Introduction

Definition of scouring in Sucipto (2004) [1] is the change of a stream accompanied by the transfer of material through the action of fluid motion. In other words, scouring phenomenon is a direct material grinding phenomenon that occurs due to the flow of fluid and the sediment carried by the fluid. The grinding of this material occurs in various domains such as agriculture, ecology, and engineering. Scouring phenomenon occurs in many civil infrastructure buildings involving water interaction with structural materials (soil or concrete) such as pier or abutment of bridges and dams. There have been many studies done for depiction of scouring phenomena such as Lacey's Theorem method (1930), Raudkivi (1997), and Rijn (1989). The result of the process cannot be used visually because it only presented the mathematical model

Methods

Results

Conclusion