Discontinuous Finite Element Method for Solving the Two Dimensional Neutron Transport Equation on Lagrangian Meshes

摘要

It is often desirable to solve the two dimensional multigroup transport equation for (r-z) geometries directly given by hydrodynamic calculations. Usually, only Monte-Carlo codes are able to compute alpha or k eigenvalues on such geometries. Most deterministic codes use an orthogonal mesh or restrict the mesh to a regular triangular grid. Other methods were developed in C.E.A. and Los Alamos but do not solve the problem of sliding between two Lagrangian blocks. Thus, we have developed a production code which solves these problems and is able to get alpha or k eigenvalues with a good accuracy for such geometries. (ERA citation 11:052708)