Due to linear extrapolation we can get negative invB (b) factors for some setup of the PVT tables when computing well potentials for default pressure (i.e. 1 atm)
PVDG
25 0.05
50 0.02
..
/
should give b approx 0.06 and invB = 1 / 0.08 >0 for 1 atm.
but since we instead extrapolate invB we get the following
25 20
50 50
..
/
which gives approximately -10 for invB for 1 atm.
@bska @OPMUSER Any suggestions on how this should be fixed.
I have some like adding an extra data point for 1 atm (or 1 bar) in the invB table where values are computed based on extrapolation of the input table or change to a constant extrapolation of the table. But comments are very welcome.
Due to linear extrapolation we can get negative invB (b) factors for some setup of the PVT tables when computing well potentials for default pressure (i.e. 1 atm)
should give b approx 0.06 and invB = 1 / 0.08 >0 for 1 atm.
but since we instead extrapolate invB we get the following
which gives approximately -10 for invB for 1 atm.
@bska @OPMUSER Any suggestions on how this should be fixed. I have some like adding an extra data point for 1 atm (or 1 bar) in the invB table where values are computed based on extrapolation of the input table or change to a constant extrapolation of the table. But comments are very welcome.