The Pn scattering order refers to the use of Legendre polynomials in expanding angular flux for transport problems, particularly in slab geometry. The order Pn indicates the number of Legendre polynomials used, with P1, P2, and P3 representing first, second, and third orders respectively. Higher orders provide more accurate approximations of angular distributions in computational codes. Understanding these differences is crucial for accurate modeling in fields such as radiation transport and computational physics.
PREREQUISITESResearchers, computational physicists, and engineers involved in radiation transport modeling and those utilizing computational codes for material analysis will benefit from this discussion.
Assuming one is familiar with discrete ordinates methods and spherical harmonics, the n in Pn refers to the number (n+1) of Legendre polynomials with which one expands the angular flux in transport problems, usually in slab geometry.Stephan_doc said:I use some computational codes.I must to enter Pn scattering order for some materials.What means that? For example what is difference between P1,P2,P3 order?