3.4.2 dranchuck_purvis_robinson - Dranchuk-Purvis-Robinson equation of state

z = dranchuck_purvis_robinson(ppr, tpr)

Computes the compressebility factor using the Dranchuk-Purvis-Robinson method using the pseudo-reduced pressure and temperature.

Arguments

ppr

Pseudo-reduced pressure .

tpr

Pseudo-reduced temperature .

Returns Compressebility factor .