...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta astronautica >Free convective heat transfer of MHD Cu-kerosene nanofluid over a cone with temperature dependent viscosity
【24h】

Free convective heat transfer of MHD Cu-kerosene nanofluid over a cone with temperature dependent viscosity

机译：MHD铜-煤油纳米流体在锥体上的自由对流传热，其粘度与温度有关

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

Nanofluids are potential heat transfer fluids with enhanced thermal and physical properties can be applied in many areas. External magnetic field have tendency to set the thermal and physical properties of nanofluids. With this motivation, we investigated the effects of temperature dependent viscosity, heat source/sink and viscous dissipation on natural convective heat transfer of radiative magnetohydrodynamic (MHD) non Newtonian nanofluid caused by a cone. For this study, a simulation is performed by mixing of copper nanoparticles in the kerosene. The self similar transformed governing equations are solved by enforcing RungeKutta based shooting technique. We acquire the significant accuracy of the recent results by comparing with the published results. In addition, it is indicated that the dual solutions exist for both the base fluid and nanofluid cases. The effects of dimensionless parameters including Eckert number, Weissenberg number, Power-law index, viscous variation parameter, heat source/sink, thermal radiation parameter, and magnetic field parameter on velocity and temperature fields along with the friction factor coefficient and the local Nusselt number are discussed with the help of graphs and tables. It is shown that nanoparticles inclusion into the non Newtonian fluids has a positive effect on thermal performance. In addition, the viscous variation parameter has a tendency to encourage the friction factor coefficient as well as the heat transfer rate. Moreover, Cu-kerosene nanofluid signifies a better thermal performance than the Ag-kerosene nanofluid.
机译：纳米流体是潜在的传热流体，具有增强的热和物理性能，可应用于许多领域。外部磁场倾向于设定纳米流体的热和物理性质。以此动机为基础，我们研究了温度依赖性粘度，热源/散热片和粘性耗散对锥引起的辐射磁流体动力学（MHD）非牛顿纳米流体自然对流传热的影响。对于本研究，通过在煤油中混合铜纳米颗粒进行模拟。通过执行基于RungeKutta的射击技术可以解决自相似的变换控制方程。通过与已发布的结果进行比较，我们获得了最新结果的显着准确性。另外，表明基础溶液和纳米流体情况都存在双重解决方案。无量纲参数（包括埃克特数，魏森伯格数，幂律指数，粘滞变化参数，热源/散热器，热辐射参数和磁场参数）对速度和温度场以及摩擦系数和局部Nusselt数的影响通过图形和表格进行讨论。结果表明，将纳米颗粒包含在非牛顿流体中对热性能具有积极影响。另外，粘性变化参数具有促进摩擦系数和传热率的趋势。此外，铜-煤油纳米流体比银-煤油纳米流体具有更好的热性能。

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