Tom Posted March 9, 2012 Share Posted March 9, 2012 (edited) In the last time I'm playing around with fluid sim and tryed to build simple smoke solver. I have a small problem, I not 100% sure what"Advection" means and how it works. First thing that comes in my mind, advection -> add vector motion From examples looked advection was got from velcoty, and velocity is vector field type. Now I think: advection is when vector field (velcoty) is added to exsisting source (density) to create motion. I hope someone can explain this to me more precisely. My native language is not english, so simple example wuld be better. Thanks in advance, Tom Edited March 9, 2012 by Tom 1 1 Quote Link to comment Share on other sites More sharing options...
edward Posted March 9, 2012 Share Posted March 9, 2012 http://en.wikipedia.org/wiki/Advection ? 2 Quote Link to comment Share on other sites More sharing options...
Tom Posted March 9, 2012 Author Share Posted March 9, 2012 I checked that, but as I said, Im not 100% sure if understood that correctly. Quote Link to comment Share on other sites More sharing options...
symek Posted March 10, 2012 Share Posted March 10, 2012 To advect something means to make it moving along with a surrounding flux, just like sand moving with a wind force or Houdini's particles moved by velocity field coming from smoke sim. Fluids flux creates a pressure force on an object, object starts moving up to the speed of surrounding fluid. 2 Quote Link to comment Share on other sites More sharing options...
Tom Posted March 10, 2012 Author Share Posted March 10, 2012 Thanks SYmek, I think I now understand that Quote Link to comment Share on other sites More sharing options...
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