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ON THE EQUIVALENCE OF THE SPHERICAL HARMONICS METHOD AND THE DISCRETE ORDINATE METHOD USING GAUSS QUADRATURE FOR THE BOLTZMANN EQUATION

Technical Report ·
OSTI ID:4306059
The relationship of the spherical harmonics method and the discrete ordinate method using Gauss quadrature is explicitly demonstrated. It is found that, in general, the two methods are not equivalent, but that they are upon a suitable modification of the source and scattering kernel used in the discrete ordinate method. This modification consists of expanding the source and kernel in spherical harmonics and truncating at the appropriate term. Analogous results are obtained for the double spherical harmonics and double Gauss quadrature methods. (auth)
Research Organization:
Westinghouse Electric Corp. Bettis Plant, Pittsburgh
DOE Contract Number:
AT(11-1)-GEN-14
NSA Number:
NSA-12-016556
OSTI ID:
4306059
Report Number(s):
WAPD-TM-118
Country of Publication:
United States
Language:
English

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