Direct discrete method for neutronic calculations

摘要

The objective of this paper is to introduce a new direct method for neutronic calculations. This method which is named Direct Discrete Method is simpler than the neutron transport equation and also more compatible with physical meaning of problems. This method is based on physic of problem and with meshing of the desired geometry writing the balance equation for each mesh intervals and with notice to the conjunction between these mesh intervals produce the final discrete equations series without production of neutron transport differential equation and mandatory passing from differential equation bridge. We have produced neutron discrete equations for a cylindrical shape with two boundary conditions in one group energy. The correction of the results from this method are tested with MCNP -4B code execution.