Higher order approximation methods for the Boltzmann equation
The paper deals with a higher-order time difference method for the spatially nonhomogeneous Boltzmann equation \[ \begin{multlined} {\partial f\over \partial t}(X,\xi,t) +\xi \cdot {\partial f\over \partial X} (X,\xi,t) =Q\bigl(f(X, \xi,t), f(X,\xi,t) \bigr) [\xi],\\ 0<t\leq \Delta t, \quad f(X,\xi,0) =f_0(X,\xi). \end{multlined} \] The proposed method consists of two steps, as the first one is the same as the convection step in the splitting method while the second one takes into account not only the collision term but also its variation along the characteristic line.
scientific article; zbMATH DE number 1140518
scientific article