onkardahare Posted September 25, 2017 Share Posted September 25, 2017 I am trying to create a effect like when superman comes through the smoke it creates the swirls inside smoke as given in the link below, but the problem is i am not getting how to start this kind of effects in pyro. I am trying, please help me on this. Superman Saves Lois Lane _ Desert Scene - Batman v Superman Dawn of Justice (2016) Movie Clip - YouTube.mp4 Quote Link to comment Share on other sites More sharing options...
Nebucadnezar Posted September 25, 2017 Share Posted September 25, 2017 (edited) Hello onkardahare, I would approach this using a velocity volume (the volume velocity node can create nice vortex effect) in SOP at the right location and add it on one frame to DOP when the collision takes places (animating the source velocity value should do the trick). A more procedural way would be to create a custom field that would be directly be linked to your collider object (move with it or being multiplied depending on the distance from it) so it would affect the rest of the sim just when needed. I hope this helps! Edited September 25, 2017 by Nebucadnezar Quote Link to comment Share on other sites More sharing options...
ikoon Posted September 25, 2017 Share Posted September 25, 2017 Here, Matt Estela has a source file and nice explanation:http://www.tokeru.com/cgwiki/index.php?title=HoudiniDops#Pyro_and_collisions Btw that superman effect is not physically correct ... those two vortices are made by two downward velocity "fields" under two wings. So you will have to fake those two fields: Quote Link to comment Share on other sites More sharing options...
Guest tar Posted September 25, 2017 Share Posted September 25, 2017 Eddies/vorticies form because of the conservation of energy, lower pressure air moves so the denser air moves in to fill the vacuum, so just close the domain boundaries and move an object through it. The smoke solver does the rest. Quote Link to comment Share on other sites More sharing options...
onkardahare Posted September 26, 2017 Author Share Posted September 26, 2017 thankyou all, the information you guys provided is awesome and i can now understand how it works. thankyou all thankyou very much. Quote Link to comment Share on other sites More sharing options...
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