摘要:
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.
摘要:
A photographic color temperature meter capable of measuring light including stationary light and flash light. The meter controls timing of light measurements so that light measurement is performed during the time when stationary light and flash light are included and when only stationary light is included. Thereafter, calculation of color temperature only of flash light is performed.
摘要:
A light measurement device includes a photoelectric converter for receiving light from an object to be measured and converting the light to a measuring electrical energy in accordance with the intensity of the light, an offset amount measurement device for measuring the offset amount of the photoelectric converter, temperature measurement device for measuring a first temperature of the photoelectric converter when measuring the offset amount, and a second temperature of the photoelectric converter when measuring the light from the object, a memory device for storing a characteristic of the photoelectric converter with respect to temperature, correction amount calculation device for calculating a correction amount based on the characteristic, the first temperature, and the second temperature, and a light intensity calculation device for calculating a light intensity based on the measuring electrical energy, the offset amount, and the correction amount.
摘要:
A parallel computer system which divides the entire space of facilities into a plurality of small divisions; assigns a plurality of processors thereof to the divisions, respectively, the lower stream processors receiving data on a boundary condition from the upper stream processor by communication to determine a condition for the continuity of the adjacent divisions, the processors carrying out parallel analytical operations for the analysis of the data on the corresponding divisions so as to meet the received boundary condition; and collects data obtained by the parallel analytical operations of the processors in a host computer to obtain analytical data on the large-scale facilities. The lower stream processors assigned to the lower stream divisions receive boundary conditions provided by the upper stream processors assigned to the upper stream divisions in order starting from the lowermost stream processor assigned to the lowermost steam division upward, and the processor to receive data gives a data transmission request signal to the processor to transmit data, and the latter processor transmits data to the former processor after receiving the data transmission request signal given thereto by the former processor.