杜慧勇,邹立,伍培明,等.旋涡式氢气循环泵性能及内部流动特性[J].内燃机工程,2025,46(4):172-180.
旋涡式氢气循环泵性能及内部流动特性
Performance and Internal Flow Characteristics of Vortex-Type Hydrogen Circulating Pumps
DOI：10.13949/j.cnki.nrjgc.2025.04.018
关键词:旋涡泵  数值模拟  气动性能  流场  流动损失
Key Words:vortex pump  numerical simulation  pneumatic performance  flow field  flow loss
基金项目:国家自然科学基金项目（52006054）
作者单位E-mail
杜慧勇* 河南科技大学 车辆与交通工程学院，洛阳 471003 dhy@haust.edu.cn 
邹立* 河南科技大学 车辆与交通工程学院，洛阳 471003 3088086727@qq.com 
伍培明 中原内配明达氢能有限公司 南京研发中心，南京 211200 wupm55@126.com 
李民 河南科技大学 车辆与交通工程学院，洛阳 471003 limin@haust.edu.cn 
李阳阳 河南科技大学 车辆与交通工程学院，洛阳 471003 1664159498@qq.com 
范晨阳 河南科技大学 车辆与交通工程学院，洛阳 471003  
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摘要:为了研究泵结构参数对性能的影响及内部流动特性，针对一款氢气循环泵在两种不同结构参数下进行了性能试验，并通过计算流体力学（computational fluid dynamics， CFD）软件对比了空气和氢气作为介质时的模拟结果，研究分析了泵内流场和温度分布。结果表明：HP-2型旋涡式氢气循环泵在较低转速下即可达到与HP-1型旋涡式氢气循环泵相同的升压和流量，但其耗功较高；空气介质和氢气介质的模拟结果趋势一致，可进行替代研究；HP-2机型的叶轮直径与叶宽比较小，增大了叶片流道的相对占比，削弱了叶轮与流道间的动量交换，导致HP-2机型流道内的中高速区占比小于HP-1机型；隔舌处增大的轴向间隙对入口处流动产生了更大影响；不同工况下泵内温度分布规律相同，但HP-2机型的进出口温差较HP-1机型高29%，且在相同流量工况下，HP-1机型的效率比HP-2高23%；此外，HP-2机型内速度矢量分布杂乱，产生了更多的二次流和机械损失，相比于HP-1，HP-2机型在不同位置叶轮流道内的速度矢量方向与叶轮径向的最大夹角均高出约10°，导致气流对叶轮吸力面和出口壁面的冲击更大，撞击损失增大，效率降低。
Abstract:To investigate the impact of pump structural parameters on performance and internal flow characteristics， experiments were conducted on hydrogen circulation pumps with different structural configurations. Additionally， computational fluid dynamics（CFD） simulations were performed to compare results when using air and hydrogen as working fluids， with an in-depth analysis of the internal flow field and temperature distribution. Results show that HP-2 can achieve the same pressure increase and flow rate as HP-1 can at lower rotational speeds but with higher power consumption. The simulation trends for both air and hydrogen were consistent， suggesting that air can be used as a substitute for experimental studies. HP-2， with a smaller impeller diameter-to-width ratio， exhibited a higher proportion of the flow channel occupied by the blade passages， which weakened momentum exchange between the impeller and the flow channel. This resulted in a lower proportion of medium-to-high velocity regions in HP-2 compared to HP-1.The increased axial clearance at the volute tongue region also had a more significant impact on the inlet flow. Despite similar temperature distribution patterns under different operating conditions， the temperature difference between the inlet and outlet of HP-2 was 29% higher than that of HP-1. Moreover， at the same flow rate， HP-1 was 23% more efficient than HP-2. Additionally， HP-2 exhibited more chaotic velocity vector distributions， leading to increased secondary flow and mechanical losses. The maximum angular deviation of the velocity vectors from the radial direction within the impeller passages of HP-2 was approximately 10° higher than that of HP-1， resulting in greater impact losses due to stronger impingement on the impeller suction surfaces and outlet duct walls， ultimately reducing overall efficiency.
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