• 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 >MHD thermosolutal natural convection and entropy generation of Carreau fluid in a heated enclosure with two inner circular cold cylinders, using LBM
【24h】

MHD thermosolutal natural convection and entropy generation of Carreau fluid in a heated enclosure with two inner circular cold cylinders, using LBM

机译：使用LBM，在带有两个内部圆形冷缸的加热外壳中，MHD热固对流和Carreau流体的自然熵产生

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

In this paper, thermosolutal natural convection and entropy generation in a heated enclosure with two inner cold cylinders filled with a non-Newtonian Carreau fluid in the presence of a uniform magnetic field has been simulated by Lattice Boltzmann Method (LBM). This study has been conducted for certain pertinent parameters of Rayleigh number (Ra = 10(4) and 10(5)), the Buoyancy ratio (N = 1, 0.1,1), Hartmann number (Ha = 0, 15, 30, 60, and 90), power-law indexes (n = 0.2,1, and 1.8). Results indicate that the rise of Rayleigh number enhances heat transfer for various studied parameters. The increase in power-law index provokes heat and mass transfer to drop gradually. However, the effect of power-law index on heat and mass transfer declines steadily as Hartmann of number causes heat and mass transfer to decline significantly. The augmentation of the buoyancy ratio number enhances heat and mass transfer. The augmentation of Rayleigh number enhances different entropy generations and declines the average Bejan number. The increase in the power-law index provokes various irreversibilities to drop significantly; although, the increase in Hartmann number decreases the influence of power-law index on different entropy generations. The enhancement of the buoyancy ratio causes the summation entropy generations to increase considerably. It was found that the total entropy generation declines as Hartmann augments.(C) 2018 Elsevier Ltd. All rights reserved.
机译：在本文中，已经通过格子Boltzmann方法（LBM）模拟了在加热的封闭空间中的热固性自然对流和熵的产生，该加热封闭空间在两个内冷缸中填充了非牛顿Carreau流体，并且存在均匀的磁场。这项研究是针对瑞利数（Ra = 10（4）和10（5）），浮力比（N = 1、0.1、1），哈特曼数（Ha = 0、15、30， 60和90），幂律索引（n = 0.2、1和1.8）。结果表明，瑞利数的增加促进了各种研究参数的传热。幂律指数的增加促使热量和质量传递逐渐下降。然而，幂律指数对传热和传质的影响稳步下降，因为数的哈特曼使传热和传质显着下降。浮力比数的增加增强了传热和传质。瑞利数的增加增强了不同熵的产生，并降低了平均贝扬数。幂律指数的增加导致各种不可逆性大大降低；尽管Hartmann数的增加减少了幂律指数对不同熵代的影响。浮力比的提高导致求和熵的产生显着增加。发现随着Hartmann的增加，总的熵生成量下降。（C）2018 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 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