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首页> 外文期刊>JSME International Journal. Series B, Fluids and Thermal Engineering >Flow Analysis for Single and Multi-Nozzle Jet Pump
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Flow Analysis for Single and Multi-Nozzle Jet Pump

机译：单喷嘴和多喷嘴喷射泵的流量分析

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摘要

Jet pumps, driven by a Primary-Loop Recirculation (PLR) Pump, have been widely used in Boiling Water Reactor (BWR) plants to recirculate the reactor core coolant. A jet pump consists of a driving nozzle, a bell-mouth, a throat and a diffuser. The improvement of the jet pump efficiency for BWR plants brings an economic advantage because it reduces the operating power cost of the PLR pump. In order to improve the efficiency of the BWR jet pump, a 1/5 scale jet pump test loop for BWR plant was used and intensive tests were conducted focusing on the types of driving nozzles and shapes of the throat. These test data were used for CFD flow analysis code verification. The analytical data showed good agreement with the test results. After the analytical model verification, improvement of jet pump efficiency was conducted. It was shown by the CFD analysis that the peak efficiency of the improved jet pump will be 36% with the tapered throat.
机译：由主循环再循环（PLR）泵驱动的喷射泵已广泛用于沸水反应堆（BWR）工厂，以使反应堆堆芯冷却剂再循环。喷射泵由驱动喷嘴，喇叭口，喉管和扩散器组成。 BWR工厂的喷射泵效率的提高带来了经济优势，因为它降低了PLR泵的运行功率成本。为了提高BWR喷射泵的效率，对BWR工厂使用了1/5比例的喷射泵测试回路，并针对驱动喷嘴的类型和喉部形状进行了深入测试。这些测试数据用于CFD流量分析代码验证。分析数据显示与测试结果吻合良好。经过分析模型验证，提高了喷射泵的效率。 CFD分析表明，采用锥形喉管时，改进型喷射泵的峰值效率将达到36％。

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