| 基于CFD的深海柱塞泵配流副流场特性分析 |
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| 引用本文： | 王凯丽,曹学鹏,曹皓清,付耀,卫昌辰.基于CFD的深海柱塞泵配流副流场特性分析[J].液压与气动,2018,0(12):37-42. |
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| 作者姓名： | 王凯丽 曹学鹏 曹皓清 付耀 卫昌辰 |
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| 作者单位： | 1. 长安大学工程机械学院， 陕西西安710064;
2. 公路养护装备国家工程实验室， 陕西西安710064 |
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| 基金项目： | 国家自然科学基金（51509006）；中央高校基本科研业务费专项资金(300102258201,300102258402) |
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| 摘 要： | 为预测深水环境下压力、温度及油膜分布等变参数对柱塞泵使用性能及工作寿命的影响规律，建立深水环境工况模型，基于雷诺(Reynolds)方程求解配流副稳态油膜控制方程，采用CFD方法仿真分析工作参数、水深环境参数等变化时油膜压力场、温度场变化规律。结果表明：当工作水深从海平面增加至7000 m时，排油腔高压油块A、上死点B及吸油腔低压油块C 3点处的轴向压力不断增大，油膜呈现楔形分布，而温度场分布在海平面至1000 m处温度急剧下降，之后降幅减小。随着水深的增加油膜受到的压力增大，温度减小，进而导致稳定性下降。指出变深环境对配流副油膜压力场、温度场影响显著，为深水环境下柱塞泵配流副的流场特性分析及性能优化打下基础。
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| 关 键 词： | 变深环境 柱塞泵 配流副 流场仿真 油膜分布 |
| 收稿时间： | 2018-08-31 |
Flow Field Characteristics Analysis Based on CFD for Port Plate Pair of Piston Pump in Ocean-depths |
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| WANG Kai-li,CAO Xue-peng,CAO Hao-qing,FU Yao,WEI Chang-chen.Flow Field Characteristics Analysis Based on CFD for Port Plate Pair of Piston Pump in Ocean-depths[J].Chinese Hydraulics & Pneumatics,2018,0(12):37-42. |
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| Authors: | WANG Kai-li CAO Xue-peng CAO Hao-qing FU Yao WEI Chang-chen |
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| Affiliation: | 1. School of Construction Machinery, Changan University, Xi'an, Shaanxi710064;
2. Key Laboratory of Road Construction Technology and Equipment, Chang'an University, Xian, Shaanxi710064 |
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| Abstract: | In order to predict the influence of pressure, temperature and oil-film distributions on performance and working life of piston pump, a control equation for oil-film depended on oceanic environment is built based on Reynolds equations. The CFD simulation is used to obtain variation of pressure and temperature fields with the change of operation parameters and oceanic parameters. The results show that, when working water depth increases from sea level to 7000 m, axial pressure increases continuously at high-pressure point A, top dead center point B and low-pressure point C, and the oil-film presents a wedge shaped distribution, while the distribution of temperature drops sharply from 0 to 1000 m, and it decreases afterwards. With the increase of ocean-depth, pressure increases and temperature drops on oil-film, resulting in a decrease in stability. It proves that variable ocean-depth condition significantly affect on oil-film pressure field and temperature field. The numerical simulation lays a solid foundation for flow field characteristics analysis and performance optimization of port plate pair for piston pump in ocean-depths. |
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