摘要
冷却剂流态是影响核主泵装置工作性能的重要因素,而进出水流道的结构影响着进出水流态。在保证叶轮和导叶结构不变的情况下,探究不同的进出口流道结构对泵水力性能的影响。本文基于SST k-ω湍流模型和SIMPLEC算法,使用三个常用的商业计算流体力学软件对采用不同入口弯管、蜗壳和出口直管的轴流泵进行网格无关性分析和全流域稳态数值计算。经计算,两个模型的外特性参数一致,流量特性曲线几乎重合,且轴流泵的进出水流态相似。不同商业流体力学计算软件得到的曲线和云图的趋势一致,各软件计算误差均在5%以内,证明本次研究中进出口结构改型对泵的水力性能没有产生明显的影响。
The coolant flow pattern is an important factor affecting the performance of the nuclear coolant pump.The structure of inlet and outlet flow channel affects the inlet and outlet flow pattern.In order to explore the influence of different inlet and outlet channel structures on the hydraulic performance of the pump,the inlet and outlet water structure of the volute type axial flow pump was studied under the condition that the impeller and guide vane were unchanged.Based on the SST k-o turbulence model and SIMPLEC algorithm,the grid convergence analysis and steady-state numerical calculation of axial flow pumps with different inlet bend,volute and outlet straight pipe are carried out.The simulation uses three commonly used commercial computational fluid dynamics software.The calculation shows that the external characteristic parameters of the two models are consistent,the flow characteristic curves almost coincide,and the flow state in and out of the axial flow pump is similar.The curve obtained by different commercial fluid mechanics calculation software is consistent with the trend of the cloud map,and the difference between the values is less than 5%,which proves that the different inlet and outlet structures and flow channels in this study have no obvious influence on the hydraulic performance of the pump.
作者
黄滨
刘艺涵
卢尚翔
杨新
刘祥松
HUANG Bin;LIU Yihan;LU Shangxiang;YANG Xin;LIU Xiangsong(Ocean College,Zhejiang University,Zhoushan 316021,China;College of Energy Engineering,Zhejiang University,Hangzhou 310027,China;Harbin Electric Power Equipment Company Limited,Harbin 150066,China)
出处
《大电机技术》
2024年第3期63-68,共6页
Large Electric Machine and Hydraulic Turbine
基金
国家自然科学基金(U23B20107)。
关键词
轴流泵
进出水流道
蜗壳
CFD数值模拟
axial flow pump
inlet and outlet flow-passage
volute
CFD numerical simulation
