Abstract
One of the major shortcomings in dealing with the Boltzmann equation is the complicated nature of the collision integral, in both the full nonlinear version, Eq. (1.1) of Chapter II, and the linearized form, Eq. (2.2) of Chapter III. It is therefore not surprising that alternative, simpler expressions have been proposed for the collision term; they are known as collision models, and any Boltzmann-like equation where the Boltzmann collision integral is replaced by a collision model is called a model equation or a kinetic model.
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Cercignani, C. (1990). Model Equations. In: Mathematical Methods in Kinetic Theory. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-7291-0_4
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DOI: https://doi.org/10.1007/978-1-4899-7291-0_4
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