• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Energy >Optimal design of multistage centrifugal pump based on the combined energy loss model and computational fluid dynamics
【24h】

Optimal design of multistage centrifugal pump based on the combined energy loss model and computational fluid dynamics

机译：基于能量损失模型和流体力学计算的多级离心泵优化设计

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

This paper proposes a method to optimize the design of a typical multistage centrifugal pump based on energy loss model and Computational Fluid Dynamics (ELM/CFD). Different grid numbers, turbulence models, convergence precisions, and surface roughness are calculated for a typical multistage centrifugal pump. External characteristic experiments are also conducted to benchmark the numerical simulation. Based on the results, the ELM/CFD method was established including various kinds of energy loss in the pump, such as disk friction loss, volumetric leakage loss, interstage leakage loss as well as the hydraulic loss, which occurred at inlet section, outlet section, impeller, diffuser and pump cavity, respectively. The interactive relationships among the different types of energy losses were systematically assessed. Applying suitable setting methods for numerical calculation renders more credible results, and ensuring the integrity of the calculation model is the key contributor to the accuracy of the results. The interstage leakage loss is converted by the disk friction loss; thus, they are positively correlated, that is, the disk friction loss can be reduced by decreasing the interstage leakage loss. Concurrently, the volumetric leakage loss is negatively correlated with the disk friction loss; thus, increasing the volumetric leakage loss can effectively reduce the disk friction loss. The increment of the volumetric leakage loss is greater than the decrement of the disk friction loss for general centrifugal pumps. This relationship between these types of losses, however, does not apply to pumps with significantly low specific speed. Therefore, reducing the volumetric leakage and interstage leakage losses is the most effective technique to increase the efficiency of general centrifugal pumps. The impeller should be designed according to the maximum flow design method, because the inevitable volumetric leakage loss will improve the pump efficiency under rated flow condition. Several methods have been proposed to improve the pump efficiency. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文提出了一种基于能量损失模型和计算流体力学（ELM / CFD）的典型多级离心泵设计优化方法。对于典型的多级离心泵，计算出了不同的网格数，湍流模型，收敛精度和表面粗糙度。还进行了外部特性实验，以对数值模拟进行基准测试。根据结果​​，建立了ELM / CFD方法，该方法包括泵的各种能量损失，例如盘的摩擦损失，体积泄漏损失，级间泄漏损失以及水力损失，这些损失发生在入口部分，出口部分，叶轮，扩散器和泵腔。系统地评估了不同类型的能量损失之间的相互作用关系。将适当的设置方法应用于数值计算可提供更可靠的结果，并且确保计算模型的完整性是导致结果准确性的关键因素。级间泄漏损失由圆盘摩擦损失转换；因此，它们是正相关的，即，可以通过减小级间泄漏损失来减小盘摩擦损失。同时，体积泄漏损失与圆盘摩擦损失负相关。因此，增加体积泄漏损失可以有效地减小盘摩擦损失。对于常规离心泵，体积泄漏损失的增加量大于圆盘摩擦损失的减少量。但是，这些类型的损失之间的这种关系不适用于比转速非常低的泵。因此，减少体积泄漏和级间泄漏损失是提高通用离心泵效率的最有效技术。叶轮应根据最大流量设计方法进行设计，因为不可避免的体积泄漏损失会提高额定流量条件下的泵效率。已经提出了几种提高泵效率的方法。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Applied Energy》 |2017年第1期|10-26|共17页
  • 作者

    Wang Chuan; Shi Weidong; Wang Xikun; Jiang Xiaoping; Yang Yang; Li Wei; Zhou Ling;

  • 作者单位

    Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China|Nanyang Technol Univ, Maritime Res Ctr, Singapore 639798, Singapore;

    Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China;

    Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China|Nanyang Technol Univ, Maritime Res Ctr, Singapore 639798, Singapore;

    Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China;

    Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China;

    Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China;

    Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Energy loss model; Pump optimization; Multistage centrifugal pump; Computational fluid dynamics;

    机译：能量损失模型;泵优化;多级离心泵;计算流体力学;

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