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how to calculate pressure for liquid?

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Old   July 4, 2012, 19:48
Default how to calculate pressure for liquid?
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for lagrangian fluid simulation, most people uses modified ideal gas law but it's designed for gas, and the coefficients are hard to determine for me because I have no basis to work with. there's also tait's equation that I don't know very much about. so few people use this for SPH simulations even now. if this is the correct equation, why is modified ideal gas equation preferred over this?
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