csp Posted May 1, 2015 Share Posted May 1, 2015 I have a flip simulation were blobs moving fast on curve, collide with geometry and they splash. In other shots where they dont travel so fast, with viscosity at 6 and surface tension at 0.05 will collide and bounce or slide or split in 2/3 blobs but keeping the general form of blob. But when thet travel fast no matter how much viscosity or surface tension they will splash. Any ideas on how to avoid that? cheers, Quote Link to comment Share on other sites More sharing options...
johner Posted May 1, 2015 Share Posted May 1, 2015 How many substeps are you using? Unfortunately really high viscosity is affected by number of substeps, i.e. you can set viscosity to 1,000,000 but you'll only get so much stiffness at 2 substeps. Quote Link to comment Share on other sites More sharing options...
Georgie Posted May 1, 2015 Share Posted May 1, 2015 Have you tried increasing the velocity smoothing on the solver ? Quote Link to comment Share on other sites More sharing options...
csp Posted May 1, 2015 Author Share Posted May 1, 2015 How many substeps are you using? Unfortunately really high viscosity is affected by number of substeps, i.e. you can set viscosity to 1,000,000 but you'll only get so much stiffness at 2 substeps. In general I line to work with the minimum subsets possible, but I tried to solve that by increasing substeps up to 5 and it did't help. Also I don't think high viscosity is the solution, even if the splash will be avoided, I will lose all the natural motion of a blob. Have you tried increasing the velocity smoothing on the solver ? I tried that also up to 1 which is the maximum value but it didn't helped. How the fluid reacts is not wrong, what the director wants is wrong but that's another story . For now I am using my backup plan were I am running a normal speed sim and retiming the cache. Quote Link to comment Share on other sites More sharing options...
Rio.Dominia Posted May 2, 2015 Share Posted May 2, 2015 how about Use a sopsolver. And to mult a value, when the velocity is bigger than one value? If it's lower than one value,It's keep itself? Quote Link to comment Share on other sites More sharing options...
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