...
首页> 外文期刊>Heat Transfer Engineering >Entropy Generation Due to the Flow of a Non-Newtonian Fluid with Variable Viscosity in a Circular Pipe
【24h】

Entropy Generation Due to the Flow of a Non-Newtonian Fluid with Variable Viscosity in a Circular Pipe

机译:圆管中具有可变粘度的非牛顿流体流动引起的熵产生

获取原文
获取原文并翻译 | 示例
           

摘要

The non-Newtonian fluid can be considered as a third-grade fluid with variable viscosity. In this case, the rate of fluid strain can be formulated using the third-grade fluid analogy. In the present study, entropy generation due to non-Newtonian fluid flow in a pipe is investigated. A third-grade fluid with variable viscosity is accommodated in the analysis. Analytical solutions for velocity and temperature distributions are presented, and an entropy generation number is computed for different non-Newtonian parameters, viscosity parameters, andBrinkman numbers. It is found that increasing the non-Newtonian parameter lowers the entropy generation number. This is more pronounced in the region close to the pipe wall. Increasing the viscosity parameter and Brinkman number enhances the entropy generation number, particularly in the vicinity of the pipe wall.
机译:非牛顿流体可以被认为是具有可变粘度的第三级流体。在这种情况下,可以使用三等流体类比来制定流体应变率。在本研究中,研究了由于管道中非牛顿流体流动而产生的熵。分析中包含粘度可变的三级流体。给出了速度和温度分布的解析解,并针对不同的非牛顿参数,粘度参数和布林克曼数计算了熵产生数。发现增加非牛顿参数会降低熵产生数。这在靠近管壁的区域中更为明显。增加粘度参数和布林克曼数会增加熵产生数,特别是在管壁附近。

著录项

  • 来源
    《Heat Transfer Engineering》 |2005年第10期|p.80-86|共7页
  • 作者

    B. S. YILBAS; M. PAKDEMIRLI;

  • 作者单位

    Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, P.O. Box 1913, Dhahran 31261, Saudi Arabia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工业用热工设备;
  • 关键词

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