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首页> 外文期刊>Heat Transfer Engineering >Numerical Investigation of Magnetic Field Effect on Heat Transfer and Entropy Generation in Channel; New Approach for Fluid and Length Scale Selections
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Numerical Investigation of Magnetic Field Effect on Heat Transfer and Entropy Generation in Channel; New Approach for Fluid and Length Scale Selections

机译：磁场对通道内传热和熵产生影响的数值研究；选择流体和长度刻度的新方法

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摘要

In the present study, heat transfer and entropy generation of developing KOH-water solution is numerically examined by implementing a finite difference code to solve the governing equations. Effects of important parameters of heat transfer in both of the developing and fully developed regions are examined. The study reveals that alteration of the existing parameters could have considerable effects on the contribution of the heat transfer, friction, and magnetic field on the total entropy generation. Novelty of the present study lies on the proper fluid and length scale selection procedure which is adopted before the solution, being a guideline for the future fluid flow and heat transfer studies in the magneto-hydrodynamics (MHD). The investigations show that performing a study in the MHD flow of water base nanofluids in the length scales smaller than 0.1 m is not physically feasible, because the required magnetic field intensity is higher than the maximum generated by continuous fields.
机译：在本研究中，通过实施有限差分代码求解控制方程，对开发中的KOH水溶液的传热和熵产生进行了数值研究。研究了在发展中地区和充分发展地区中重要的传热参数的影响。研究表明，现有参数的改变可能会对传热，摩擦和磁场对总熵产生的贡献产生重大影响。本研究的新颖性在于解决方案之前采用的适当的流体和长度尺度选择程序，是未来磁流体力学（MHD）中流体流动和传热研究的指南。研究表明，对长度小于0.1 m的水基纳米流体的MHD流进行研究在物理上是不可行的，因为所需的磁场强度高于连续磁场产生的最大磁场强度。

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  • 来源
    《Heat Transfer Engineering》 |2017年第15期|1222-1232|共11页
  • 作者

    Navid Zehtabiyan-Rezaie; Mostafa Mirzaei; Majid Saffar-Avval;

  • 作者单位

    Mechanical Engineering Department, Amirkabir University of Technology, Tehran, Iran;

    Mechanical Engineering Department, Amirkabir University of Technology, Tehran, Iran;

    Mechanical Engineering Department, Amirkabir University of Technology, Tehran, Iran,Energy and Control Center of Excellence, Amirkabir University of Technology, Tehran, Iran;

  • 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);
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  • 正文语种 eng
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