THE WAVELET FUNCTION EXPANSION METHOD FOR SOLVING THE NEUTRON TRANSPORT EQUATION

摘要

A coupled method of using discrete ordinate discretization for polar angle and wavelet expansion for azimuthal angle in calculating neutron transport equation is developed. And another synthetic method of using multi-group discretization for non-resonance energy and wavelet expansion for resonance energy is also given. Based on these models, a wavelet-based neutron transport calculation code WAVTRAN and a resonance neutron spectrum calculation code WAVSON are encoded. Numerical results demonstrate that these methods are effective. The wavelet-based angular and energy discretization schemes are more powerful than the traditional ones for some problems.