Hi John, the 1 & the 0.029 values (in addition to the y
location on the surfaxce in this case) multiply to produce the
actual pressure that gets applied. The factor 0.029 is based on the
specific gravity of the fluid applied. The pressure factor for
water at room temperature is about 0.036 psi/inch of depth. Water
has a density of 1000 kg/m^3 so I would expect you can multiply
0.036 psi/in times 3.6 for your value. (Pardon the mixed units but
I think in IPS)

Vince

Vince

As far as your scale factor, if your fluid has the same viscosity as water, then you should be able to use 3.6*0.036psi/in = 0.13 psi/in. I'm going to add a disclaimer here that you are still responsible for checking references to confirm this for your industry. It seems straightforward but years of consulting taught me not to take anything for granted. Machinery's Handbook discusses this as should any reference on fluids and PV design.

Good luck!

-- Vince