coef sound

edited February 5 in DualSPHysics_v4.0
Hi all.

I have a small question how to choose the correct coefsound. I know that in the xml guide there are all nice equations how compute the variables for the xml. However I am super consfused about the coefsound. As far I understand the value is multiplied by the speedsystem and determines beta wich hence determines the compressibility of the medium (tait equation etc.). I found in a wiki that beta should be around 0.3214 GPa for water??? However, most of the tutorial cases use a coef sound of 20 which would result in a way higher incompressibility ... Can anybody please explain me this issue I am totally confused, or is the coef sound another parameter that needs to come from experimental results...
Thank you so much ....
Best H

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