Flow through bottom discharger Simulation - Fluid Mechanics - DualSPHysics

Smoothed Particle Hydrodynamics (#SPH) is a really interesting method for computational hydraulic problems; it treats the fluid as a set of particles and solves the lagrangian equations of motion for each one. A kernel function is used to interpolate the flow variables around the particles, and compute inter-particle interactions.

In the video, I show the flow results through a 12 m2 bottom discharge conduit located in a concrete dam. Excuse the rough model initialization; the desired discharge is forced into an invisible chamber just upstream of the orifice, and eventually flows completely through the orifice when the chamber fills up. The inter-particle distance is set at 15 cm, which results in a peak of 1.2 million particles.

VisualSPHysics code is a companion project to DualSPHysics. It lets you easily import model results into Blender, and overlay a bubble+foam+spray post-processing simulation to generate great-looking visualizations. The render was done with the Cycles ray-tracing engine on Blender, with motion blur enabled.

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[Bobby-vzeq]

With this kind of simulation, I mean the Lagrangian-like one, do you still have a mesh or you have to solve the equation for every particle, like you do for every nodes in the grid?

[soulihamza]

Hello
How did you generate the boundary conditions?
And the boundary layer in the buffer layer ?

[christianaranas]

What specs are the system you used to render this on?