Houdini 13 Flip simulations rnd

Flip simulation - FlipObject and FlipSolver parametars

flipWedge01 flipWedge02
flipWedge03 flipWedge04
flipWedge05 flipWedge06
flipWedge07 flipWedge08
flipWedge09  
 

Air - Force Field around objects and Flip simulation
idea for this came from Fxguide and CGW article about Battleship from ILM

"ILM went even further than this – they modeled the way the air was affected by the water splashes which in turn affected how the water was coming off the waves and splashes as mist and how that mist moved, and how the actions aerated the water and created white water. This is an outstanding level of realism. “The real selling point or tipping point was when we started building air simulations around all these events,” comments Cofer. “We used our Plume tool, which is our tool for doing smoke and fire simulation. It gives you very detailed air simulations. If you have a ship that breaches up through the ocean, it churns up the water, and there are all these vertices of air rotating under the wings – as it spreads its wings apart, as you go through the evolution of a water droplet, you start with a surface of water, which is meshed, and then splashes, and that atomizes to mist. And as it becomes less dense it is more influenced by the air fields. And it starts swirling, and the water structure influences those air flows. Once we found the key to the air fields around our splashes, it really injected a lot of realistic detail.”

"In addition, the artists ran separate simulations of the air around the water and coupled that to the base water simulation to produce swirls and eddies"


flipWedge air- surface (on water/ocean surface) - body - geometry force  
flipForceWedge01 flipForceWedge02
flipForceWedge03 flipForceWedge04

Flip simulation - using WhiteWater or Flip for secondarys

flipWedge - secondarys - wwater VS flip

 

ConvertVDB - Automatic partitioning for distributed meshing

OpenVDB toolset - Siggraph 2013 Wing Rise VDB partiton meshing

 

Houdini 13 OceanFX - Shelf tools wedges - thanks to John from SideFX

beach_tank_whitewater flat_tank_transient

splash_tank_static splash_tank_transient
splash_tank_wedges_expfalloff_wind10 splash_tank_wedges_expfalloff_wind5
splash_tank_wedges_nofalloff_wind10 splash_tank_wedges_nofalloff_wind5

wave_layer_tank_boundary wave_layer_tank_boundary_ww
wave_layer_tank_closed wave_layer_tank_transient