...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Heat Transfer >Aspect Ratio Effect on Natural Convection Flow in a Cavity Submitted to a Periodical Temperature Boundary
【24h】

Aspect Ratio Effect on Natural Convection Flow in a Cavity Submitted to a Periodical Temperature Boundary

机译：长宽比对周期性温度边界下腔内自然对流的影响

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

The effect of aspect ratio on natural convection flow in a cavity submitted to periodic temperature boundary, is investigated numerically. The temperature of the heated wall is either maintained constant or varied sinusoidally with time while the temperature of the opposite vertical wall is maintained constant. The results are given for a range of varied parameters as Rayleigh number (5 × 10~3≤Ra≤10~6), cavity aspect ratio (1/6≤A≤S8), and period of the sinusoidally heated wall (1≤τ≤1600). The amplitude of oscillation (a = 0.8) and the Prandtl number (Pr=0.71) were kept constant. The results obtained in the steady state regime show that the heat transfer averaged over the cold wall is maximum when the aspect ratio is in the range 1≤A≤2. In the case of a periodic temperature boundary, it is shown that the deviation between the mean heat transfer and the heat transfer of the constant heated case is larger for shallow cavities.
机译：数值研究了深宽比对周期性温度边界条件下腔体内自然对流的影响。受热壁的温度保持恒定，或者随时间呈正弦变化，而相对的垂直壁的温度保持恒定。给出了一系列不同参数的结果，这些参数包括瑞利数（5×10〜3≤Ra≤10〜6），腔体长宽比（1 /6≤A≤S8）和正弦加热壁的周期（1≤ τ≤1600）。振荡幅度（a = 0.8）和普朗特数（Pr = 0.71）保持恒定。在稳态状态下获得的结果表明，当纵横比在1≤A≤2的范围内时，在冷壁上平均的热传递最大。在周期性的温度边界的情况下，显示出对于浅腔，平均热传递与恒定加热壳体的热传递之间的偏差更大。

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