• 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 >Inverse determination of building heating profiles from the knowledge of measurements within the turbulent slot-vented enclosure
【24h】

Inverse determination of building heating profiles from the knowledge of measurements within the turbulent slot-vented enclosure

机译：根据湍流狭缝通风罩内的测量知识，逆向确定建筑物的供热曲线

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

Slot ventilated enclosure flows have been simulated, respectively in displacement ventilation and mixed ventilation covering from the forced convection dominated flow to the natural convection dominated flow. Direct convection simulation together with the turbulent streamlines and turbulent heatlines demonstrate that the enclosure flow pattern, indoor thermal level and heat transfer potential will depend on the interactions of external forced flow and thermal buoyancy driven flows, i.e., Reynolds number and Grashof number. In subsequent inverse convection modeling, the inverse determination of enclosure wall heat flux profiles was conducted by the use of adjoint methodology, in which the direct, sensitivity and adjoint problems are formulated and solved by finite volume method. The effects of the supplying air flow rate, thermal source strength, ventilation mode, flux functional forms, and the measurement errors on the accuracy of inverse turbulent convection estimation have been investigated. The inverse solutions of turbulent convections are of low level accuracy as the flow becomes thermal-driven turbulent flows, and they deteriorate as the noise levels increase. This work is of fundamental importance for the room air flow design and measurements involving the turbulent thermal convections.
机译：模拟了狭缝通风的围护结构流动，分别在位移通风和混合通风覆盖中，从强制对流为主流到自然对流为主流。直接对流模拟以及湍流线和湍流热线表明，围护结构的流型，室内热能级和传热势将取决于外部强制流和热浮力驱动流的相互作用，即雷诺数和格拉斯霍夫数。在随后的逆对流建模中，使用伴随方法对围墙的热通量分布进行逆向确定，其中直接问题，敏感性问题和伴随问题通过有限体积法求解。研究了送风量，热源强度，通风方式，通量函数形式和测量误差对逆流对流估计精度的影响。湍流对流的逆解随着流变成热驱动湍流而具有较低的精度，并且随着噪声水平的增加而恶化。这项工作对于涉及湍流热对流的室内空气流量设计和测量至关重要。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第18期|p.4597-4612|共16页
  • 作者

    Di Liu; Fu-Yun Zhao; Han-Qing Wang; Ernst Rank; Guang-Xiao Kou;

  • 作者单位

    School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, Hunan, China;

    School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, Hunan, China,Chair for Computation in Engineering,Faculty of Civil Engineering and Geodesy, Technische Universitaet Muenchen, Arcisstr.21, D-80290 Munchen, Bavaria, Germany;

    School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, Hunan, China;

    Faculty of Civil Engineering and Geodesy, Technical University Munich, Munich 80290, Germany;

    School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, Hunan, China;

  • 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

    enclosure flows; inverse turbulent mixed convection; adjoint method; mean turbulent heatlines;

    机译：围护流动;逆湍流混合对流;伴随法;平均湍流热线;

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