videle Posted March 2, 2012 Share Posted March 2, 2012 hey, i need help with understanding the meaning of a gas constant parameter in SPH fluid solver. maybe someone has knowledge of proper physics and could link me with formulas. why such values 250? my discoveries would be: a gas constant is used to calculate a pressure in a liquid. the magnitude of pressure is different between liquid layers. so i have found that THE PRESSURE DIFFERENCE between two particles inside a liquid is : deltaP = qhg *q - density *h - vertical height between the two points or thickness of liquid's layer (so i assume it is a particle separation value???) *g - gravity acceleration i found TOTAL PRESSURE for a particle is: P = Pa + deltaP *Pa - atmospheric pressure depends on temperature I believe that gas constant in Houdini could be used to calculate Pa atmospheric pressure? i am doing a bit of research, and this thing bothers me already for weeks. any help would be much appreciated Quote Link to comment Share on other sites More sharing options...
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