Method and device for determining reactor core parameters of nuclear thermal propulsion reactor

Abstract

The invention provides a method and a device for determining reactor core parameters of a nuclear thermal propulsion reactor, and relates to the technical field of nuclear thermal propulsion, whereinthe method comprises the steps: acquiring a fluid-solid coupling heat transfer model of the nuclear thermal propulsion reactor; acquiring a target power parameter meeting aircraft performance constraints, and performing heat transfer calculation on the fluid-solid coupling heat transfer model based on the target power parameter to obtain multiple groups of design parameters meeting thermal constraints, wherein each group of design parameters comprises geometric parameters and thermal parameters; performing neutronics modeling and physical analysis based on the multiple groups of design parameters to obtain target geometric parameters and target thermal parameters meeting neutron physical constraints; and taking the target power parameters, the target thermal parameters and the target geometric parameters as reactor core design parameters of the nuclear thermal reactor. According to the method, the reliability of reactor core parameter design in the low-enrichment-degree concentrated uranium nuclear thermal propulsion reactor can be improved.

Description

technical field [0001] The invention relates to the technical field of nuclear thermal propulsion, in particular to a method and device for determining core parameters of a nuclear thermal propulsion reactor. Background technique [0002] Thermonuclear propulsion refers to using nuclear fission energy to heat the working medium, and then ejecting the heated high-temperature and high-pressure working medium in a directional manner to obtain thrust. Nuclear thermal propulsion reactors usually use high-enrichment (>90%) enriched uranium as nuclear fuel since the 1950s and 1960s. In order to reduce the risk of nuclear proliferation and reduce research and development costs, researchers are designing low-enrichment enrichment uranium in recent years. Uranium (<20%) nuclear thermal propulsion reactors. However, for nuclear thermal propulsion reactor low-enrichment enriched uranium core parameter design, at present, researchers only make appropriate modifications on the basi...

AI Technical Summary

Problems solved by technology

However, for nuclear thermal propulsion reactor low-enrichment enriched uranium core parameter design, at present, researchers only make appropriate modifications on the basis of referring to high-enrichment enriched uranium core design parameters, therefore, the existing low-enrichment There is still a problem of low reliability in the design method of core parameters in intensively enriched uranium nuclear thermal propulsion reactors

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