huangng Posted June 17, 2015 Share Posted June 17, 2015 Hi! I need create some dancing mud scene. i wanna to ask how archive the boiling effect in flip tank ? how to do bubbles die when they go outside the liquid surface and control the velocity and viscosity for mud? Quote Link to comment Share on other sites More sharing options...
Diego A Grimaldi Posted June 17, 2015 Share Posted June 17, 2015 You may wanna check this out to get you started: Quote Link to comment Share on other sites More sharing options...
huangng Posted June 18, 2015 Author Share Posted June 18, 2015 (edited) Thanks for reply, Diego Grimaldi. i tried follow your reference but the result is not good.this is the hip file i try to create this effect but the bubbles are not colliding with the water, can you help me? bubbles1.hip Edited June 18, 2015 by huangng Quote Link to comment Share on other sites More sharing options...
paxsonsa Posted June 18, 2015 Share Posted June 18, 2015 Hey Huang, Try This. bubbles_colliding.hip Quote Link to comment Share on other sites More sharing options...
huangng Posted June 18, 2015 Author Share Posted June 18, 2015 thanks Paxsonsa, I am happy with your file now, i need custom a little bit vel to got the final result. I hope I donot have problem with viscosity thanks you very much 1 Quote Link to comment Share on other sites More sharing options...
huangng Posted June 18, 2015 Author Share Posted June 18, 2015 hi i wanna to ask about the speed and time for particle creation, the bubbles are creating to fast, how to control this? 1 Quote Link to comment Share on other sites More sharing options...
paxsonsa Posted June 18, 2015 Share Posted June 18, 2015 (edited) I am not sure I know what you mean by creating too fast. Do you means the actual motion of how the particles evolve or the actual emission rate? Edited June 18, 2015 by paxsonsa 1 Quote Link to comment Share on other sites More sharing options...
huangng Posted June 19, 2015 Author Share Posted June 19, 2015 hi Paxsonsa, I mean the motion of particles were born too fast. I wanna to control this speed. Quote Link to comment Share on other sites More sharing options...
paxsonsa Posted June 19, 2015 Share Posted June 19, 2015 so on the pscale attribute you can you the age to remap attribute using a VOP SOP and a ramp parmateter. Feed the age attr into a fit node, then feed that into a ramp parameter node then use a bind export node to export that value as the pscale attribute. - adjust the max in value of the age node to adjust the range of the ramp parameter and use the ramp to adjust the scale. You cna add additional multiplies into the flow so it adjust the global scaling. Does that make sense? 1 Quote Link to comment Share on other sites More sharing options...
huangng Posted June 22, 2015 Author Share Posted June 22, 2015 hi Paxsona. I am busy to reply for you,i am sorry. Your guide is good for me. I have one more problem with DOP flip tank. How can we transfer velocity to viscosity and temperature. I use POPVOP but It had problem bubbles_colliding (1).hip Quote Link to comment Share on other sites More sharing options...
paxsonsa Posted June 22, 2015 Share Posted June 22, 2015 Hey Huang, here is a simple example of transferring attributes from SOPS to Particle DOPs. I recommend watching form of Peter Quints videos or even having a look at this video which discusses a magma effect. Hip attached! Couple things you were a little mis-lead on, - Each Input on the Flip Solver has a specific purpose, MMB on those inputs to see what should be the input type. - viscosity has to be enabled in the flip sim. You can use the self tool in the Particle Fluids tab to set that up. sop_solver_demo.hip Quote Link to comment Share on other sites More sharing options...
Rio.Dominia Posted June 23, 2015 Share Posted June 23, 2015 Hey Huang, here is a simple example of transferring attributes from SOPS to Particle DOPs. I recommend watching form of Peter Quints videos or even having a look at this video which discusses a magma effect. Hip attached! Couple things you were a little mis-lead on, - Each Input on the Flip Solver has a specific purpose, MMB on those inputs to see what should be the input type. - viscosity has to be enabled in the flip sim. You can use the self tool in the Particle Fluids tab to set that up. Nice job,paxsonsa. And , If we want more authentic effect. Should the bubbles blast away . how to do that? Quote Link to comment Share on other sites More sharing options...
huangng Posted June 23, 2015 Author Share Posted June 23, 2015 (edited) Hey Huang, here is a simple example of transferring attributes from SOPS to Particle DOPs. I recommend watching form of Peter Quints videos or even having a look at this video which discusses a magma effect. Hip attached! Couple things you were a little mis-lead on, - Each Input on the Flip Solver has a specific purpose, MMB on those inputs to see what should be the input type. - viscosity has to be enabled in the flip sim. You can use the self tool in the Particle Fluids tab to set that up. Thanks Paxsonsa, I am really happy with this result. I watched this tut you recommended, I follow this with POPVOP but I can got the result. Actually, i never use Sop solver for effect. I am self-taught houdini, i cannot get full knowledge when i do not touch it. Edited June 23, 2015 by huangng Quote Link to comment Share on other sites More sharing options...
huangng Posted June 23, 2015 Author Share Posted June 23, 2015 Nice job,paxsonsa. And , If we want more authentic effect. Should the bubbles blast away . how to do that? Hi Rio. if you want bubbles blast away, you can kill the particle when they go upper the surface, you can modified the age and pscale in VOPSOP Quote Link to comment Share on other sites More sharing options...
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