Numerical Simulation Methods Used at VNIIEF for Multidimensional Radiation and Particle Transport Problems

The paper reviews the numerical simulation methods used at RFNCVNIIEF for various categories of multidimensional transport problems (linear and nonlinear, time-dependent and time- independent, etc.). It briefly describes, in particular, some specific features of application of the methods, such as Monte Carlo method and the method of angular coefficients (view factors), and gives a detailed analysis of deterministic grid methods. Special emphasis is put on the issues concerning nonlinear multidimensional time-dependent linked problems, where many other physical processes are considered along with the transport process.