A parallel data transfer method for overlapping grids in a steam generator

Abstract

The invention discloses a parallel data transmission method for overlapping grids in a steam generator. The steps are as follows: 1. According to the geometric structure of the steam generator, an overlapping grid is established; 2. According to a calculation model and computing resources, the grid is allocated to multi-core parallel 3. In each computing core, read and record each grid coordinate in the overlapping grid area, and pass it to the main core; 4. Perform grid matching in the main core according to the grid coordinates, Pass the matching result to the corresponding calculation core; 5. After the parallel calculation of a period of time is over, the calculation core transmits the calculation parameters to the corresponding grid according to the matching result, and prepares for the next time calculation; 6. Repeat the above parallel process until completion Calculated at all times. Based on the grid centroid matching method, the method realizes the parallel data transfer of overlapping grids in the steam generator.

Description

technical field [0001] The invention belongs to the technical field of numerical simulation of steam generators, and in particular relates to a parallel data transmission method for overlapping grids in a steam generator. Background technique [0002] The steam generator is the key equipment in the nuclear power system, which transfers the heat generated by the primary circuit to the secondary circuit, in which the heat transfer tube bundle is the isolation barrier for the primary and secondary side media, so 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 large-space three-dimensional CFD calculation, large eddy simulation, direct simulation, etc., can be effectively solved by parallel computing. Parallel computing is the simultaneous execution of multiple processes, using a ...

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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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