Method for obtaining continuous space distribution of neutron-flux density in fuel rods
A technology of neutron flux density and spatial distribution, applied in special data processing applications, instruments, electrical digital data processing, etc.
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[0052] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:
[0053] In the process of Monte Carlo simulation of particle transport calculation, the present invention introduces the idea of function expansion, realizes counting the expansion coefficient of flux under the coarse grid of space, that is, the fuel rod grid element, and obtains the continuous flux in the fuel rod. Distribution to meet the needs of high-fidelity reactor physical calculations.
[0054] Such as figure 1 As shown, the specific implementation steps of the present invention are as follows:
[0055] Step 1: In view of the problem of the PWR fuel assembly, a coarse grid is spatially divided for each component to correspond to the PWR fuel assembly. The coarse grid is the size of a single fuel rod grid. In the coarse grid, the Legendre function is selected as the basis function, and the flux of the particles in the fuel rod cell is subjected...
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