基于油液特征模型的外啮合齿轮泵数值仿真分析

发布时间：2017-12-27 09:47

本文关键词：基于油液特征模型的外啮合齿轮泵数值仿真分析　出处：《机械设计与制造》2017年08期 　论文类型：期刊论文

【摘要】：为研究油液的物理特性对齿轮泵脉动及噪声的影响机理,运用FLUENT对齿轮泵的二维内部流场进行模拟研究,对比分析了有无油液的压缩性、粘度对齿轮泵内部流场及泵出口脉动的影响。仿真结果表明:考虑压缩性较不考虑压缩性时,流量脉动系数增大了3.43%,压力脉动系数增大0.2%;考虑粘度变化较不考虑粘度变化时,流量脉动系数减小1.54%,压力脉动系数减小0.08%;考虑油液特征模型较不考虑时噪声增大了2.7d B。仿真与实验结果相吻合,为开展齿轮泵的非线性流体动力学及减振降噪等方面的研究提供了理论依据。
[Abstract]:In order to study the influence mechanism of physical characteristics of oil on gear pump's pulsation and noise, the two-dimensional internal flow field of gear pump was simulated by FLUENT. The influence of compression and viscosity of oil on the flow field and pump outlet pulsation of gear pump was compared and analyzed. The simulation results show that the consideration of compressibility is not considering compressibility, flow pulsation coefficient increases by 3.43%, pressure pulsation coefficient increases 0.2%; considering the viscosity change is not considering the viscosity change, flow pulsation coefficient decreases by 1.54%, the pressure fluctuation coefficient decreases 0.08%; considering the oil characteristics of model is not taken into account when noise increases 2.7d B. The simulation is consistent with the experimental results, which provides a theoretical basis for the research of nonlinear fluid dynamics, vibration reduction and noise reduction of the gear pump.
【作者单位】：陕西交通职业技术学院汽车工程学院;西安建筑科技大学机械电子技术研究所;
【基金】：国家自然科学基金资助项目(51675399、51275375)
【分类号】：TH325
【正文快照】： 1引言量除与结构参数有关外,更与工作介质的粘度和压力有关;文献[5]推导出了外啮合齿轮泵的瞬时流量的数学模型,得出齿轮泵的流齿轮泵由于结构简单、体积小、质量轻、抗污染敏感性小等量脉动与模数、齿数、压力角等参数有关;文献[6]优点,在液压传动与和流体控制技术中占有很大

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