...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Mechanical Science and Technology >Fluid-structure interaction analysis of an impeller for a high-pressure booster pump for seawater desalination
【24h】

Fluid-structure interaction analysis of an impeller for a high-pressure booster pump for seawater desalination

机译：海水淡化高压增压泵叶轮流体结构相互作用分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A High-pressure booster pump (HPBP) is an essential piece of equipment in a Seawater reverse osmosis (SWRO) system. As the corerotating component in the HPBP, the impeller operates extensively in a high-pressure and corrosive environment and its work status directly affects the reliability of the pump device. The vibration characteristics of the rotor were analyzed using fluid-structure interaction theory to determine the characteristics that would ensure the long-term safe operation of the HPBP. The stress and deformation analysis was performed on a partitioned solution for an impeller in a moving fluid, and the modal analysis of the impeller was conducted in still fluid based on a monolithic solution. The influence of the impeller shroud thickness on the resulting vibration characteristics was investigated by using three modifications of the impeller. A comparison of the results with the initial impeller geometry was then carried out under partial load operations. Three commonly used materials for an impeller were also evaluated. The three-dimensional turbulent flow was modeled utilizing the SST k-omega turbulence model, and the numerical results were verified by the experimental data. The results show that natural frequency of the 20CrMnTi is the highest among the three materials for each order mode, followed by 00Cr17Ni14Mo2Ti (316L) and HT250Ni2Cr. Increasing the rear shroud thickness would result in a notable reduction in its deformation. Evidently, the thicker the front and rear shrouds, the lower the shroud deformations. Among the three operating points, the displacement fields of the impeller were quite akin. An outward displacement growth was observed within the impeller hub to the outer diameter, thereby leaving both shrouds with a local maximum on the blade passage. Additionally, higher equivalent stress values were observed at the junction between the blade and the shroud. These results reveal the deformation and stress affecting the impeller, which then enables identification of and provides specific theoretical guidance for the optimization of the structural design of the pump.
机译：高压增压泵（HPBP）是海水反渗透（SWRO）系统中的一件必不可少的设备。作为HPBP中的冠状组件，叶轮在高压和腐蚀性环境中广泛运行，其工作状态直接影响泵装置的可靠性。使用流体结构相互作用理论分析转子的振动特性，以确定确保HPBP的长期安全操作的特性。在移动流体中的叶轮的分配溶液上进行应力和变形分析，并且叶轮的模态分析在基于整体溶液的静止液中进行。通过使用叶轮的三种修改，研究了叶轮护罩厚度对所得到的振动特性的影响。然后在局部负荷操作下进行与初始叶轮几何形状的结果的比较。还评估了三种常用的叶轮材料。利用SST k-Omega湍流模型建模三维湍流流动，通过实验数据验证了数值结果。结果表明，20CrMNTI的固有频率是每个订单模式的三种材料中最高的，其次是00CR17NI14MO2TI（316L）和HT250NI2CR。增加后护罩厚度会导致其变形显着降低。显然，前后护罩越厚，护罩变形越低。在三个操作点中，叶轮的位移场非常类似。在叶轮轮毂内观察到外径的向外位移生长，从而将两个护罩留在刀片通道上具有局部最大值。另外，在叶片和护罩之间的连接处观察到更高的等效应力值。这些结果揭示了影响叶轮的变形和应力，从而能够识别并提供优化泵结构设计的具体的理论指导。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号