• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Oscillatory flows of electro-thermo-convection in eccentric annulus
【24h】

Oscillatory flows of electro-thermo-convection in eccentric annulus

机译：偏心环面中电热对流的振荡流

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 detailed numerical investigation for oscillatory electro-thermo-convection of dielectric liquids in horizontal eccentric annulus is carried out based on a unified lattice Boltzmann method (LBM). The liquid is under the simultaneous action of a strong unipolar charge injection and a thermal gradient. The self-oscillatory behaviors and heat transfer characteristics for different Rayleigh number Ra, electric Rayleigh number T, Prandtl number Pr, mobility parameter M and radii ratio are studied systematically. The results show that the values of Ra within the range from 10(3) to 10(4) have little effect on the periodic oscillatory convection, while the flow develops from steady to periodic oscillatory and finally evolves into chaotic as T increases, and the fundamental frequency and the fluctuation amplitude as well as the heat transfer rate increase with T. Moreover, it is found that the fluid properties have significant impact on the oscillatory convection, and the formation of oscillating flows is strongly related to the value of radius ratio. (C) 2019 Elsevier Ltd. All rights reserved.
机译：基于统一的格子玻尔兹曼方法（LBM），对水平偏心环空中介电液体的振荡电热对流进行了详细的数值研究。液体在强单极性电荷注入和热梯度的同时作用下。系统研究了不同瑞利数Ra，电瑞利数T，普朗特数Pr，迁移率参数M和半径比的自振荡行为和传热特性。结果表明，Ra的值在10（3）到10（4）范围内对周期振荡对流影响不大，而流量从稳定振荡发展到周期振荡，并随着T的增加最终演变为混沌，并且基频和波动幅度以及传热速率都随着T的增加而增加。此外，还发现流体特性对振荡对流有很大影响，并且振荡流的形成与半径比值密切相关。 （C）2019 Elsevier Ltd.保留所有权利。

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