基于全空化模型的柱塞泵内空化流动数值模拟

China Mechanical Engineering(2015)

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Abstract
针对典型斜盘式轴向柱塞泵工作时出现的空化现象,以某高压柱塞泵为例,建立了柱塞泵配流过程中,气液混合相的连续性控制方程和运动控制方程,推导了基于气液两相流的质量输运控制方程,并对柱塞泵进行了空化流动的数值模拟。仿真结果表明,不同的转速、压差和配流盘结构对柱塞腔内部、配流盘表面以及缸体与配流盘接触处的空化存在影响,且仿真结果与实验检测数据结果是吻合的。
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Key words
vapor gener-ation ratio,cavitation,vapor-liquid two-phase flow,swash plate axial piston pump,vapor compression ratio
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