Overlapping grid parallel data transmission method in steam generator

Abstract

The invention discloses an overlapping grid parallel data transmission method in a steam generator. The method comprises the following steps: 1, establishing overlapping grids according to a geometric structure of the steam generator; 2, distributing the grids to multi-core parallel calculation cores according to a calculation model and calculation resources; 3, in each calculation core, reading and recording coordinates of each grid in a overlapping grid region, and transmitting the coordinates to a main core; 4, performing grid matching in the main core according to the coordinates of the grids, and transmitting matching results to the corresponding calculation cores; 5, after parallel calculation in one time period is finished, transmitting, by the calculation cores, calculation parameters to the corresponding grids according to the matching results to prepare for calculation in the next time period; and 6, repeating the above parallel process until all-time calculation is completed. The method is based on a grid centroid matching method, and according to the method, parallel data transmission of the overlapping grids in the steam generator is achieved.

Description

technical field [0001] The invention belongs to the technical field of steam generator numerical simulation, and in particular relates to a parallel data transfer method of overlapping grids in a steam generator. Background technique [0002] The steam generator is the key equipment in the nuclear power system. It transfers the heat generated by the primary circuit to the secondary circuit. The heat transfer tube bundle is the isolation barrier for the primary and secondary side media. Therefore, the numerical simulation of the steam generator is the core of the nuclear power system. research focus. At the same time, with the continuous development of computer parallel technology, scientific problems of computational fluid dynamics, such as three-dimensional CFD calculations in large spaces, large eddy simulations, direct simulations, etc., can be effectively solved through parallel computing. Parallel computing is the execution of multiple processes at the same time. Using...

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Problems solved by technology

[0004] When using overlapping grids for steam generators in computational fluid dynamics software for parallel computing, due to the relatively large randomness of grid allocation, it is difficult to achieve correspondence between the two sets of grid data on the primary side and the secondary side. The direct transfer of grid parameters generally uses a single core to receive grid parameters and exchange data within a single core, making the transfer speed slow and the utilization of computer resources low in the data transfer phase

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