• CN:11-2187/TH
  • ISSN:0577-6686

›› 1996, Vol. 32 ›› Issue (5): 52-57.

• 论文 • 上一篇    下一篇

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发热球体绕流的强迫对流传热试验研究

刘涛;王补宣   

  1. 北京航空航天大学;清华大学
  • 发布日期:1996-09-01

EXPERIMENTAL STUDY OF FORCED CONVECTIVE HEAT TRANSFER AROUND HEATING SOLID SPHERE

Liu Tao;Wang Buxuan   

  1. Beijing University of Aeronautics and Astronautics Qinghua University
  • Published:1996-09-01

摘要: 应用激光全息干涉并配合红外扫描热象仪,测量了空气绕流球形发热体的温度场,以研究模拟固体颗粒燃烧发热条件下的传热特性及其影响因素。通过试验,获得了球体局部换热数Nu沿球极角θ的分布,球体平均换热数Nu及Nu和Nu受Re和T S/T 0影响的经验关系式。

关键词: 传热, 发热球体, 强迫对流

Abstract: The temperature field around a heasing solid sphere is measured with both laser holography and infrared scanning technique to study the hest transfer characteristics of solid particles in combustion. The local Nusselt number Nu along the sphere polar angle θ, the averaged Nusselt number Nit, as well as their empiral correlation affected by Re and Tb/T0 are obtained.

Key words: Forced convection, Heat transfer, Heating sphere