Floating grid-based nuclear-thermal-mechanical multi-physical coupling calculation method
A calculation method and multi-physics technology, applied in calculation, computer-aided design, electrical digital data processing, etc., can solve the problems of reduced calculation accuracy of calculation amount and inability to fully reflect multi-physics state, and achieve the effect of improving calculation accuracy
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[0015] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0016] Next, the nuclear-thermal-mechanical multi-physics coupling calculation is performed for a typical fuel rod of a 1000MWe class nuclear power plant pressurized water reactor by using the method of the present invention.
[0017] The nuclear power of the reactor is 1000MWe, the system pressure is 15.5MPa, the coolant inlet flow rate is 15170kg / s, and the coolant inlet temperature is 290°C. There are 157 boxes of fuel assemblies in the reactor core, and there are 264 fuel rods in each box. This typical fuel rod is based on a square cell, using UO2 pellets, Zirlo zirconium alloy cladding, and filling the gap with helium. 426.72 cm.
[0018] For the above typical fuel rods, the specific steps to implement the nuclear-thermal-m...
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