...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Strojnicky Casopis >The modification of the mixed flow pump with respect to its stability
【24h】

The modification of the mixed flow pump with respect to its stability

机译：混流泵稳定性方面的改进

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 is focused on the computational fluid dynamics (CFD) simulation of the mixed flow pump (i.e. radiaxial pump) with the aim to detect the reasons of Y-Q characteristic instability. The main reasons of pressure pulsations were detected by means of the analysis of velocity and pressure fields inside the pump combined with the theoretical approach. Consequently, the modifications of spiral case and pump suction area were made based on the knowledge of flow conditions and the shape of dissipation function. The primary design of pump geometry was modelled as the base model serving for the comparison of individual modification influence. The basic experimental data are available for this geometry. This approach replaced the more complicated and with respect to convergence of all computational tasks more difficult calculation for the compressible liquid flow. The modification of primary pump consisted in inserting the three fins types. Subsequently, the evaluation of pressure pulsations, specific energy curves and visualization of velocity fields were chosen as the criterions for successful design.
机译：本文专注于混合流泵（即轴流泵）的计算流体动力学（CFD）仿真，旨在检测Y-Q特性不稳定的原因。通过分析泵内部的速度和压力场并结合理论方法来检测压力脉动的主要原因。因此，基于对流动条件和耗散函数形状的了解，对螺旋箱和泵的吸入面积进行了修改。泵几何形状的主要设计被建模为用于比较单个修改影响的基础模型。基本的实验数据可用于此几何。这种方法代替了更复杂的方法，并且就所有计算任务的收敛而言，对于可压缩液体流的计算更加困难。主泵的修改在于插入了三个翅片类型。随后，选择压力脉动，比能量曲线和可视化速度场作为评估成功设计的标准。

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