Apparatus and method for estimating core performance
First Claim
1. An apparatus for estimating core performance, comprising a plurality of arithmetic processing units, a memory means for storing processing data for said arithmetic processing units, and communications circuitry means for providing data communications between said arithmetic processing units;
- wherein;
each of said arithmetic processing units corresponds to a segment that is formed by dividing a core portion consisting of at least one fuel assembly by planes perpendicular to the axis thereof;
obtains a power distribution for the entire core portion to which said corresponding segment belongs, via said communications circuitry; and
calculates the enthalpy distribution, density distribution and void fraction distribution of coolant within each segment on the basis of said power distribution, independently of other arithmetic processing units.
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Abstract
The present invention relates to a technique for estimating core performance which includes the steps of: dividing a reactor core into a plurality of core portions, each consisting of at least one fuel assembly, then further dividing each of the core portions into segments by planes perpendicular to the axis thereof and allocating a parallel processing apparatus having a plurality of arithmetic processing units, a memory for storing processing data of the arithmetic processing units, and communications circuitry for transferring data with respect to the arithmetic processing units, in a manner such that the arithmetic processing units correspond to the segments of the core. Data on the power distribution for the entire core portion to which a corresponding segment belongs is transferred to each arithmetic processing unit, before each of the arithmetic processing units performs thermal hydraulic calculations. Each of the arithmetic processing units calculates the enthalpy distribution and void fraction of coolant in the segment on the basis of the power distribution data, independently of other arithmetic processing units.
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Citations
6 Claims
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1. An apparatus for estimating core performance, comprising a plurality of arithmetic processing units, a memory means for storing processing data for said arithmetic processing units, and communications circuitry means for providing data communications between said arithmetic processing units;
- wherein;
each of said arithmetic processing units corresponds to a segment that is formed by dividing a core portion consisting of at least one fuel assembly by planes perpendicular to the axis thereof;
obtains a power distribution for the entire core portion to which said corresponding segment belongs, via said communications circuitry; and
calculates the enthalpy distribution, density distribution and void fraction distribution of coolant within each segment on the basis of said power distribution, independently of other arithmetic processing units. - View Dependent Claims (2, 3)
- wherein;
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4. A method of estimation core performance, comprising the steps of:
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dividing a reactor core into a plurality of core portions, each consisting of at least one fuel assembly, then further dividing each of said core portions into segments by planes perpendicular to the axis thereof; allocating a parallel processing apparatus comprising a plurality of arithmetic processing units, a memory for storing processing data of said arithmetic processing units, and communications circuitry for transferring data with respect to said arithmetic processing units, in such a manner that said arithmetic processing units correspond to said segments of said core; and transferring to each arithmetic processing unit data on the power distribution for the entire core portion to which the corresponding segment belongs, before each of said arithmetic processing units performs thermal hydraulic calculation, then causing each of said arithmetic processing units to calculate the enthalpy distribution, density distribution and void fraction distribution of a coolant in said segment on the basis of said power distribution data, independently of other arithmetic processing units. - View Dependent Claims (5, 6)
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Specification