Study on transient characteristics of centrifugal pump<br /> during starting period<br />
Journal Title: Science Paper Online - Year 2009, Vol 4, Issue 9
Abstract
In order to research the transient explicit performance and transient flow of the centrifugal pump during starting period, this paper introduces the transient performance test, the numerical simulation of transient flow and explicit performance. The experimental method of the transient performance and numerical simulation method of inner flow are present. The results show that the head and flow rate increase with the rotational speed. When the start time is shorter, the impact head is obvious. The method of generalized equation is used to predict the explicit characteristics of the centrifugal pump during starting period. The numerical simulation model of three-dimensional transient flow is established by dynamic mesh method and sliding mesh method, and LES simulation is used to describe the turbulent flow. The numerical results compared with the experimental results achieve better consistency, which verify the feasibility of three-dimensional transient flow numerations of the centrifugal pump during starting period.
Authors and Affiliations
Binjie Xu, Zhifeng Li
Keywords
Related Articles
- EP ID EP96888
- DOI -
- Views 114
- Downloads 0
Study of Navigable Depth Applied With the Condition of Fluid Mud
With the increasing depth of sullage coast ports, the back silting of the ports become more serious, and the fluid mud develops, which cause more difficulties in the maintenance of water depth. This paper dissertates and...
基于PCI9054的PCI接口数据通信系统
文章介绍了PCI总线接口协议芯片PCI9054的性能、特点，分析了windows的WDM驱动程序的特点。为了实现一种数据量大、速度快的数据通信系统，在软硬件设计中采用了速度快、效率高的带突发模式的DMA传输模式，并在实际硬件设计中得到了不错的...
Study on crystallizing phosphorus removal system based on back-propagation neural network
A BP neural network model was developed for the crystallizing phosphorus removal process. Results indicated that the BP model showed a good convergence performance during training, and the model predictions of outflow ph...
转盘萃取塔放大效应及其原因的探讨
本文采用按基本原理进行设计的方法，对三种不同直径（内径分别为0.05 m、0.29 m和2.4 m）的四种转盘塔的放大效应及其成因进行了探讨。计算结果表明，大型塔与小型塔相比，其特性速度、两相表观速度较高，液滴直径较大，分散传质单元高度...
Dynamic power model of clock networks with transmission line effects
The size of the present VLSI (very large scale integrated) circuits scales down to deep sub micrometer, and the interconnector exhibits transmission line effects at high clock speed. However, the conventional power model...