Combining rules: Difference between revisions

Revision as of 14:59, 31 October 2007

The combining rules (also known as mixing rules) for binary mixtures are variously given by

\epsilon _{ij}={\sqrt {\epsilon _{ii}\epsilon _{jj}}}

\sigma _{ij}={\frac {\sigma _{ii}+\sigma _{jj}}{2}}

For the second virial coefficient of a mixture (Ref. 1)

B_{ij}={\frac {\left(B_{ii}^{1/3}+B_{jj}^{1/3}\right)^{3}}{8}}

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-The '''Lorenz-Berthelot combining rules''' (also known as ''mixing rules'') for binary mixtures  are given by
+{{Stub-general}}
+The '''combining rules''' (also known as ''mixing rules'') for binary mixtures  are variously given by
+====Berthelot rule====
 :<math>\epsilon_{ij} = \sqrt{\epsilon_{ii} \epsilon_{jj}}</math>
+====Lorentz rule====
 :<math>\sigma_{ij} = \frac{\sigma_{ii} + \sigma_{jj}}{2}</math>
 See also [[Lennard-Jones model]]
+====Admur and Mason====
+For the [[second virial coefficient]] of a mixture (Ref. 1)
+:<math>B_{ij} = \frac{\left(B_{ii}^{1/3}+B_{jj}^{1/3}\right)^3}{8}</math>
 ==References==
+#[http://dx.doi.org/10.1063/1.1724353 I. Amdur and E. A. Mason "Properties of Gases at Very High Temperatures",  Physics of Fluids '''1''' pp. 370-383 (1958)]
 [[category: mixtures]]