首页> 外文期刊>International Journal of Heat and Mass Transfer >Onset of convection in a horizontal porous layer driven by catalytic surface reaction on the lower wall
【24h】

Onset of convection in a horizontal porous layer driven by catalytic surface reaction on the lower wall

机译:下壁催化表面反应驱动水平多孔层中的对流开始

获取原文
获取原文并翻译 | 示例
           

摘要

The onset of convection in a horizontal layer filled with a fluid-saturated porous medium is studied in this paper. On the lower wall there is an exothermic surface reaction, described by the Arrhenius kinetics, while the upper wall is subjected to uniform temperature and concentration. The problem, cast in dimen-sionless form, is governed by three dimensionless parameters pertaining to the exothermic reaction and the Lewis number. Once the basic state is solved, a linearized stability analysis is then performed and the resulting eigenvalue problem is solved using a conventional shooting method. One determines numerically the critical Rayleigh and wave numbers at the onset of convection, for various values of the problem parameters.
机译:本文研究了充满流体饱和多孔介质的水平层中对流的开始。在下壁上有放热的表面反应,由阿伦尼乌斯动力学描述,而上壁则受到均匀的温度和集中度。该问题以无量纲形式提出,由与放热反应和路易斯数有关的三个无量纲参数控制。一旦解决了基本状态,便会进行线性化稳定性分析,并使用常规的射击方法解决所产生的特征值问题。对于问题参数的各种值,可以在对流开始时从数值上确定临界瑞利和波数。

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