@article{(Open Science Index):https://publications.waset.org/pdf/12424,
	  title     = {Improved Neutron Leakage Treatment on Nodal Expansion Method for PWR Reactors},
	  author    = {Antonio Carlos Marques Alvim and  Fernando Carvalho da Silva and  Aquilino Senra Martinez},
	  country	= {},
	  institution	= {},
	  abstract     = {For a quick and accurate calculation of spatial neutron
distribution in nuclear power reactors 3D nodal codes are usually
used aiming at solving the neutron diffusion equation for a given
reactor core geometry and material composition. These codes use a
second order polynomial to represent the transverse leakage term. In
this work, a nodal method based on the well known nodal expansion
method (NEM), developed at COPPE, making use of this polynomial
expansion was modified to treat the transverse leakage term for the
external surfaces of peripheral reflector nodes.
The proposed method was implemented into a computational
system which, besides solving the diffusion equation, also solves the
burnup equations governing the gradual changes in material
compositions of the core due to fuel depletion. Results confirm the
effectiveness of this modified treatment of peripheral nodes for
practical purposes in PWR reactors.},
	    journal   = {International Journal of Physical and Mathematical Sciences},
	  volume    = {6},
	  number    = {3},
	  year      = {2012},
	  pages     = {228 - 231},
	  ee        = {https://publications.waset.org/pdf/12424},
	  url   	= {https://publications.waset.org/vol/63},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 63, 2012},