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Implicit Correlations
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These correlations are quite accurate and work in a wide range of pressures and temperatures but computationally expensive and may have problems with convergence when approaching the critical temperature.
Hall and Yarborough’s Z-factor correlation @model Dranchuk, Purvis and Robinson’s Correlation (Dranchuket al. 1971) Dranchuk and Abou-Kassem’s correlation (Abou-kassemand Dranchuk 1975) |
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Explicit Correlations
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The explicit correlations do not have convergence issues, generate smooth derivatives for compressibility calculations and provide fast computing.
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Kareem Z-factor Correlation @model (2016) Sanjari and Nemati’s Correlation (2012) Azizi, Behbahani and Isazadeh’s Correlation (2010) Heidaryan, Moghdasi and Rahimi’s Correlation (2010) |
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See also
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Natural Science / Physics /Thermodynamics / Equation of State / Z-factor
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