Effect of Magnetic Flux Density and Other Properties on Temperature and Velocity Distribution in Magnetohydrodynamic Pump (MHD)

2008 14th Symposium on Electromagnetic Launch Technology Pub Date : 1900-01-01 DOI:10.1109/elt.2008.32

M. Ghassemi, A. Shahidian

{"title":"Effect of Magnetic Flux Density and Other Properties on Temperature and Velocity Distribution in Magnetohydrodynamic Pump (MHD)","authors":"M. Ghassemi, A. Shahidian","doi":"10.1109/elt.2008.32","DOIUrl":null,"url":null,"abstract":"The interaction of moving conducting fluids with electric and magnetic fields provides the magnetohydrodynamic (MHD) phenomenon. Based on this principle, MHD pump uses the \"Lorentz force\" to move fluid. The railgun channel is one important segment in an electromagnetic launcher. As known one of the possible ways to increase the EML efficiency is to segment the working channel. For this purpose MHD flow study is necessary. It is required to have the knowledge of the flow field and the temperature to design a magnetohydrodynamic pump. The purpose of this study is to investigate the effect of the magnetic flux density and current on the flow and the temperature distribution in a magnetohydrodynamic pump. To solve the governing differential equations, a finite difference based code is developed and utilized. The temperature and velocity are calculated by solving the energy and the Navier-Stokes equations. Results show a maximum value of velocity for different values of magnetic flux density (B). However the temperature stays almost constant with magnetic field. In addition as current increases, the velocity and the temperature increase too.","PeriodicalId":170049,"journal":{"name":"2008 14th Symposium on Electromagnetic Launch Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 14th Symposium on Electromagnetic Launch Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/elt.2008.32","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

The interaction of moving conducting fluids with electric and magnetic fields provides the magnetohydrodynamic (MHD) phenomenon. Based on this principle, MHD pump uses the "Lorentz force" to move fluid. The railgun channel is one important segment in an electromagnetic launcher. As known one of the possible ways to increase the EML efficiency is to segment the working channel. For this purpose MHD flow study is necessary. It is required to have the knowledge of the flow field and the temperature to design a magnetohydrodynamic pump. The purpose of this study is to investigate the effect of the magnetic flux density and current on the flow and the temperature distribution in a magnetohydrodynamic pump. To solve the governing differential equations, a finite difference based code is developed and utilized. The temperature and velocity are calculated by solving the energy and the Navier-Stokes equations. Results show a maximum value of velocity for different values of magnetic flux density (B). However the temperature stays almost constant with magnetic field. In addition as current increases, the velocity and the temperature increase too.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

磁通密度及其它特性对磁流体动力泵(MHD)内温度和速度分布的影响

运动的导电流体与电场和磁场的相互作用提供了磁流体动力学(MHD)现象。基于这一原理，MHD泵利用“洛伦兹力”来移动流体。轨道炮通道是电磁发射装置的重要组成部分。众所周知，提高EML效率的一种可能方法是对工作信道进行分段。为此，有必要进行MHD流动研究。设计磁流体动力泵需要具备流场和温度方面的知识。研究了磁通密度和电流对磁流体动力泵内流量和温度分布的影响。为了求解控制微分方程，开发并使用了基于有限差分的程序。通过求解能量和Navier-Stokes方程计算温度和速度。结果表明，在不同的磁通密度值下，速度有最大值(B)，而温度随磁场的变化基本保持不变。此外，随着电流的增大，速度和温度也随之升高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

2008 14th Symposium on Electromagnetic Launch Technology

自引率

0.00%

发文量