mranosa Posted April 19, 2017 Share Posted April 19, 2017 Hi, i would like to ask some questions about dop workflow in Houdini. First thing, fields are they MAC Grids? I think they are voxel grids but i don't really know if they are MAC Grids or what which is really confusing. Secondly, the boundaries in the flip solver or any solver, how we enfocre boundary conditions like no slip boundaries? Thirdly, the GAS Advect which has a lot of versions and it has two parameters, advection type and advection method which i am not sure about the difference between them! Is it based on the semi lagrangian scheme or what? Lastly, the GAS Diffuse, What's the way it uses to solve the diffusion equation? Jacoobi or what? I want to see microsolvers code in C++, how can i see it? I can't really find more about what is inside them. If you have an answer of any of these questions, please help me! Thanks and cheers! Quote Link to comment Share on other sites More sharing options...
catchyid Posted April 19, 2017 Share Posted April 19, 2017 Hi I am by no mean an expert Houdini user, but I think the kind of questions are too "technical", MAC Vs Voxel, No Slip Conditions, Eulerian or Lagrangian What are using Houdini for? Is it for Visual Effects or for engineering purposes? From your questions, I think they are oriented more toward Fluid Mechanics engineering (artists would simply diffuse temperature or velocity but won't care how it's it being computed). Finally, I don't think you will find C++ source code for solvers because these are SideFX code and they won't share it... Quote Link to comment Share on other sites More sharing options...
mranosa Posted April 19, 2017 Author Share Posted April 19, 2017 Yes i am working on developing fluid solver but i am seeking help i want to make my fluid react with the bounds can you help me? I closed the boundaries of the vel field but it didn't work. Quote Link to comment Share on other sites More sharing options...
catchyid Posted April 19, 2017 Share Posted April 19, 2017 the link below might help you (it's been included twice! sorry, could not find a way to remove one copy!) houdini_collison -smoke problem Quote Link to comment Share on other sites More sharing options...
mranosa Posted April 19, 2017 Author Share Posted April 19, 2017 I just found it before I say your reply thanks though ! Now , I am just curious to enter the world of microsolvers algorithms . I wanna know what's the algorithm behind each one. in the gas advect there is a paramater advection method and one advection type . anyone knows the difference ? Quote Link to comment Share on other sites More sharing options...
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