I’ve some issues with the IfPos function. I’m calculating the hydrodynamic pressure with Reynolds equation and want to use the simple Sommerfeld treatment to consider cavitation. I want to use the IfPos function to determine whether the pressure entries are positive or negative, so I need a coefficient function that contains 1 or 0.
cav_i = IfPos(p_rey_i,1,0)
However, the coefficient function that is output also contains other values, including values greater than 1 and even negative values. Shouldn’t the function only output the two values specified?
Thank you in advance,
could you maybe post a minimal working example of your issue? How have you determined that the function has other values that 1 or 0? I have a feeling this might just be a visualisation issue, so maybe dry and do a point evaluation at points where it looks like the function has the wrong value.
Thank 's for the quick response. I did indeed perform a point evaluation, or in a loop to evaluate the values across the width of the mesh. But the problem was that I set the coefficient function to a grid function before the evaluation and the interpolation of course leads to deviating values. Is there another way to set the COF function to a GFU or is there a way to limit the interpolation results to certain values?
Thanks a lot!