中国电机工程学报Issue(4)：922-928,7.DOI:10.13334/j.0258-8013.pcsee.2015.04.020
核主泵内部流动干涉的瞬态效应研究
Transient Effects for Flow Interaction in the Flow Field of Nuclear Main Pump
摘要
Abstract
In order to reveal flow interference effects of impeller and guide vane of a nuclear main pump, adopting similar conversion algorithm and multiple parameters matching method, based on RNGk-ε turbulence model and block structured grids, unsteady numerical simulation was carried on the model pump whose shrinkage coefficient is 0.5. The results show that the pulsation amplitude of the head is related to operating conditions, the minimal value is on the rated condition, and it will gradually increase when the working condition deviate from the optimal point. The unstable flow pulsation effect appears in the inner flow passage of the guide vane, the transient effect of the flow pulsation of the inside guide vane is not obvious when the working condition is above 0.8Qd,; the flow pulsation within the guide vane tends to be unstable when the working condition is under 0.8Qd,. Considering the hydraulic stability of the unit, working condition should be above 0.8Qd. Rotor-stator interaction induces periodic pulsation of the guide vane static pressure distribution, the average pulsation amplitude on the pressure side is maximum,and the suction side is minimum. The pressure pulsation period is related to the impeller blade number. Theguide vane static pressure distribution is related to the relative position of the impeller trailing edge and the guide vane leading edge; the impeller trailing edge caused the blockage effect on the guide vane inlet flow, and it’s the main reason causes the guide vane static pressure pulsation.关键词
核主泵/导叶/动静干涉/脉动/数值模拟Key words
nuclear main pump/guide vane/rotor-stator interference/pulsation/numerical simulation分类
机械制造引用本文复制引用
黎义斌,李仁年,王秀勇,毕祯,胡鹏林,程效锐..核主泵内部流动干涉的瞬态效应研究[J].中国电机工程学报,2015,(4):922-928,7.基金项目
国家科技支撑计划项目(2013BAF01B02)；国家自然科学基金项目(51369015)。National Science and Technology Support Program (2013BAF01B02)；National Natural Science Funds of China (51369015) （2013BAF01B02）
