Pair stress approximation

Pair stress approximation (Eq. 3.18)

$\rho B_{2}={\frac {q}{(1+q)^{B_{3}}}}$

where $q=P/k_{B}T\rho -1$, $B_{2}$ is the second virial coefficient and Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle B_3} is the third virial coefficient.

See also

• Scaled-particle theory
• BBGKY hierarchy