Hall-Yarborough: Hall-Yarborough correlation

In zFactor: Calculate the Compressibility Factor 'z' for Hydrocarbon Gases

Description

Hall-Yarborough correlation

Usage

z.HallYarborough(pres.pr, temp.pr, tolerance = 1e-13, verbose = FALSE)

Arguments

pres.pr	pseudo-reduced pressure
temp.pr	pseudo-reduced temperature
tolerance	controls the iteration accuracy
verbose	print internal

Examples

# get z value from a Tpr at Ppr
z.HallYarborough(pres.pr = 1.5, temp.pr = 2.0)
z.HallYarborough(pres.pr = 1.5, temp.pr = 1.1)

# for two given Tpr and Ppr vectors, find the calculated z points
ppr <- c(0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5)
tpr <- c(1.3, 1.5, 1.7, 2)
hy <- z.HallYarborough(pres.pr = ppr, temp.pr = tpr)
print(hy)

Example output

[1] 0.9580002
[1] 0.4732393
          0.5       1.5       2.5       3.5       4.5       5.5       6.5
1.3 0.9176300 0.7534433 0.6399020 0.6323003 0.6881127 0.7651710 0.8493794
1.5 0.9496855 0.8581232 0.7924067 0.7687902 0.7868071 0.8316848 0.8906351
1.7 0.9682547 0.9134862 0.8756412 0.8605668 0.8694525 0.8978885 0.9396353
2   0.9838234 0.9580002 0.9426939 0.9396286 0.9490995 0.9697839 0.9994317

zFactor documentation built on Aug. 1, 2019, 5:04 p.m.