  Dam is built for water supply, water flow or flooding control and electricity
energy storage, but in other hand, dam is one of the most dangerous natural
disaster in many countries including in Indonesia. The impact of dam break in
neighbour area and is huge and many flooding in remote area, as happen in Dam
Situ Gintung in Tangerang (close to Jakarta) in 2009. Smoothed Particle
Hydrodynamics (SPH), is one of numerical method based on Lagrangian grid which
is ap- plied in astrophysical simulation may be used to solve the simulation on
dam break effect. The development of SPH methods become alternative methods to
solving Navier Stokes equation, which is main key in fluid dynamic simulation.
In this paper, SPH is developed for supporting solid par- ticles in use for 3D
dam break effect (3D-DBE) simulation. Solid particle have been treated same as
fluid particles with additional calculation for converting gained position
became translation and rotation of solid object in a whole body. With this
capability, the result of 3D-DBE simulation has been varies and interesting.
The goals of this simulation is for analyse fluid and solid particle
interaction by using two different scenario. The first scenario relation
between height of fluid to a solid wall barrier and second scenario, is to
study relation between solid wall and its collapse time by dam break. The
results show sliding distance of a solid wall is depend on a fluid height, and
relation between fluid heght and wall dimension will be discussed too in this
paper.
