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Numerical study of air flow and heat transfer in a two-dimensional enclosure with floor heating

机译：带有地板采暖的二维外壳中空气流动和传热的数值研究

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摘要

In this paper, two-dimensional modeling for floor heating as well as concentrated heating, were performed numerically for an enclosure instead of a room. Governing equations for turbulent incompressible flow (continuity, momentum and energy equations) coupled with radiation, were solved using Boussi-nesq approximation and control volume approach. The modified k - ε model for turbulence and the DO model for radiation were adopted within the framework of SIMPLE algorithm. Different physical boundary conditions such as air absorptivity, floor temperature, wall temperatures and window dimension were applied and results for floor heating were compared with those obtained for concentrated heating. Results for the floor heating show that 74% of heat transfer from floor to the walls and the air in the room was in the form of radiation and the rest was due to convection. Study of temperature fields shows that temperature distribution within the room in the case of floor heating was more uniform than with concentrated heating.
机译：在本文中，对围墙而不是房间的地板采暖和集中供热进行了二维建模。使用Boussi-nesq逼近和控制体积法求解了不可压缩湍流与辐射耦合的控制方程（连续性，动量和能量方程）。在SIMPLE算法的框架内，采用了改进的k-ε湍流模型和DO辐射模型。应用了不同的物理边界条件，例如空气吸收率，地板温度，壁温和窗户尺寸，并将地板加热的结果与集中加热的结果进行了比较。地板采暖的结果表明，从地板到墙壁以及房间中空气的热传递的74％是辐射形式的，其余的是对流的。对温度场的研究表明，在地板采暖的情况下，室内温度分布比集中采暖的情况更均匀。

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  • 来源
    《Energy and Buildings》 |2014年第8期|98-104|共7页
  • 作者

    H. Khorasanizadeh; G.A. Sheikhzadeh; A.A. Azemati; B. Shirkavand Hadavand;

  • 作者单位

    Department of Thermo Fluids, Faculty of Mechanical Engineering, University of Kashan, Kashan 87317-51167, Iran;

    Department of Thermo Fluids, Faculty of Mechanical Engineering, University of Kashan, Kashan 87317-51167, Iran;

    Department of Thermo Fluids, Faculty of Mechanical Engineering, University of Kashan, Kashan 87317-51167, Iran,Department of Mechanical Engineering, Abadan Branch, Islamic Azad University, Abadan, Iran;

    Department of Resin and Additives, Institute for Color Science and Technology, Tehran 16688-14811, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Floor heating; CFD modeling; AIR flow; Heat transfer; Radiation;

    机译：地板采暖;CFD建模;空气流动;传播热量;辐射;

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