Wang-Chang-Uhlenbeck Equation

Wang-Chang-Uhlenbeck equation Generalized Boltzmann equation Flow simulations in transitional and rarefied regimes... 

Tcheremissine FG (2002) Solution of the Wang Chang-Uhlenbeck master equation. Doklady Phys 47 872-875... 

The fiilly quantum-mechanical kinetic theory of polyatomic gases is based on the Waldmann-Snider equation (Waldmann 1957 Snider 1960) and was subsequently developed and sununarized by McCourt and co-workers (for instance, McCoiut et al. 1990,1991). Wang Chang and Uhlenbeck (1951) and independently de Boer (see Wang Chang et al. 1964) formulated a semiclassical kinetic theory (Wang Chang-Uhlenbeck-de Boer theory, or WCUB) subsequently developed by Monchick, Mason and their col-... 

In the absence of external fields the evolution of fi is then governed by the Wang Chang-Uhlenbeck-de Boer equation - a form of generalized Boltzmann equation -that can be written after linearization as... 

The notation remains the same as before except that subscripts q and q denote independent molecular species and the Wang Chang-Uhlenbeck operator for the mixture is defined by the equation... 

Equations (4.92) to (4.102), which express the thermal conductivity of a gas mixture in terms of the cross sections of the Wang Chang-Uhlenbeck theory have been rewritten by Monchick et al. (1965) in an approximate form, in which so-called complex collisions have been neglected, as... 

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