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Based on the traditional model transformation theory, and integrated with CFD numerical simulation technology, a new modelling design method of nuclear main pump impeller was investigated and proposed. The new method improves the traditional one, can strictly ensure compliance with design pressure, temperature, flow rate, speed, and obtain new impeller precisely corresponding with the design head...
In this study, the numerical investigation on the interaction between the volume and the diffuser with different outlet angles in the nuclear main pump was conducted by using the commercial software NUMECA. It was found that the static pressure increases gradually from the diffuser outlet to the volume wall with the maximum value presenting near the volume wall. The back flow at the volume outlet...
Three-dimensional numerical simulations were performed to study the internal flow of a mixed-flow pump impeller under design conditions, by using commercial CFD software - NUMECA, specifically developed for the flow analysis of turbo-machinery. The agreement between the calculated results and the experimental data proved that the adopted numerical methods and models were reasonable and accurate. By...
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