| 往复泵吸入特性的流体力学数值模拟 |
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| 引用本文： | 张慢来,廖锐全,冯 进.往复泵吸入特性的流体力学数值模拟[J].农业工程学报,2010,26(14):242-247. |
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| 作者姓名： | 张慢来 廖锐全 冯 进 |
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| 作者单位： | 长江大学，CNPC采油采气重点实验室，荆州 434023;长江大学，CNPC采油采气重点实验室，荆州 434023;长江大学，CNPC采油采气重点实验室，荆州 434023 |
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| 基金项目： | 国家自然科学基金（60873021 复杂动态网络的优化计算及其应用），湖北省创新团队计划项目（T200803 低渗透油气井动态仿真与决策技术） |
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| 摘 要： | 为了研究往复泵在吸入过程中流体的动力特性及相关参数对吸入特性的影响，对往复泵的吸入过程进行计算流体动力学的数值模拟。在吸入过程中，根据阿道尔夫泵阀运动微分方程和活塞运动引起的泵腔内流场变化确定泵阀的运动，同时运用动网格生成技术更新了不同曲柄转角下的计算模型。通过数值计算，得到了往复泵的瞬时吸入流量、柱塞端面上的压力分布，并研究了冲次、弹簧刚度对吸入阀迟滞关闭现象的影响。结果表明，流体的压缩性和惯性导致瞬时流量小于理论值，吸液量是理论值的0.91倍，往复泵的冲次从100/min增大到330/min时，吸入阀
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| 关 键 词： | 泵，特性描述，数值分析，弹簧刚度，迟滞关闭 |
| 收稿时间： | 2010/9/23 0:00:00 |
| 修稿时间： | 2010/12/5 0:00:00 |
Hydrokinetic numerical simulation for sucking performance of reciprocating pump |
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| Zhang Manlai,Liao Ruiquan and Feng Jin.Hydrokinetic numerical simulation for sucking performance of reciprocating pump[J].Transactions of the Chinese Society of Agricultural Engineering,2010,26(14):242-247. |
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| Authors: | Zhang Manlai Liao Ruiquan and Feng Jin |
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| Abstract: | In order to investigate the sucking performance of reciprocating pump and influence of working parameters, the sucking process of pump was simulated on the basis of Computational Fluid Dynamics. For determining the moving law of suction valve, the Adolph movement equation of reciprocating pump valve was solved with the transient inner flow field in pump, and relevant dynamic meshes were created or suspended according to the movement of piston and valve at different crank angle. Through numerical simulation, the sucking performance of reciprocating pump about transient flux, pressure contour on piston was analyzed, and the influence of stroke frequency, spring stiffness on delay-closing of suction valve was investigated. The simulation results showed that transient flux declined and absorptive capacity was 0.91 times of theoretical value for liquid compressibility and inertia. Besides, suction valve delay-closing angle increased 5.4° and delay-closing displacement increased 2.3 mm when stroke frequency raised form 100 to 330/min. The study provides a method for the liquid-solid coupling simulation of sucking performance by building the computed model adapted to the motion of piston and valve. It is useful for investigating sucking performance of reciprocating pump and optimizing the reciprocating pump. |
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| Keywords: | pumps characterization numerical analysis spring stiffness delay-closing |
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