深海采矿矿浆泵内转速对固液两相流影响分析
发布时间：2018-11-12 17:49
【摘要】：为分析转速对深海采矿矿浆泵固液两相流的影响,文章采用RNGκ-ε湍流模型,运用Fluent软件对矿浆泵内固液两相流进行了数值模拟;比较了不同的转速对矿浆泵内压力分布、颗粒体积分数分布以及工作性能的影响;最后,矿浆泵在多种转速下进行试验,结果验证了数值模拟方法的准确性。研究结果表明:转速越大,叶轮对混合流体做功的有效性越好,混合浆体总压呈现大幅度上升,扬程也越大;不同转速工况下,平均颗粒体积分数值在叶片吸力面与压力面上的差异不大,说明叶片吸力面与压力面的磨损程度差异不大,并且导叶表面颗粒体积分数分布受转速的影响较轻。
[Abstract]:In order to analyze the effect of rotational speed on solid-liquid two-phase flow in deep-sea mining slurry pump, RNG 魏-蔚 turbulence model and Fluent software are used to simulate the solid-liquid two-phase flow in slurry pump. The effects of different rotational speeds on the pressure distribution, particle volume fraction distribution and performance of slurry pump are compared. Finally, the accuracy of numerical simulation method is verified by experiments of slurry pump at various rotational speeds. The results show that the greater the rotating speed, the better the effectiveness of the work done by the impeller to the mixed fluid, the larger the total pressure of the mixed slurry is and the greater the lift is. Under different rotational speed conditions, the difference of the average particle volume fraction between the suction surface and the pressure surface of the blade is not significant, which indicates that the wear degree between the suction surface and the pressure surface of the blade is not different. And the distribution of particle volume fraction on the surface of the guide vane is less affected by the rotational speed.
【作者单位】： 中南大学机电工程学院;中南大学高性能复杂制造国家重点实验室;
【基金】：国家自然科学基金资助项目(51375498) 教育部博士点基金资助项目(20130162110004)
【分类号】：TD807
本文编号：2327779
[Abstract]:In order to analyze the effect of rotational speed on solid-liquid two-phase flow in deep-sea mining slurry pump, RNG 魏-蔚 turbulence model and Fluent software are used to simulate the solid-liquid two-phase flow in slurry pump. The effects of different rotational speeds on the pressure distribution, particle volume fraction distribution and performance of slurry pump are compared. Finally, the accuracy of numerical simulation method is verified by experiments of slurry pump at various rotational speeds. The results show that the greater the rotating speed, the better the effectiveness of the work done by the impeller to the mixed fluid, the larger the total pressure of the mixed slurry is and the greater the lift is. Under different rotational speed conditions, the difference of the average particle volume fraction between the suction surface and the pressure surface of the blade is not significant, which indicates that the wear degree between the suction surface and the pressure surface of the blade is not different. And the distribution of particle volume fraction on the surface of the guide vane is less affected by the rotational speed.
【作者单位】： 中南大学机电工程学院;中南大学高性能复杂制造国家重点实验室;
【基金】：国家自然科学基金资助项目(51375498) 教育部博士点基金资助项目(20130162110004)
【分类号】：TD807
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