圆球及椭球颗粒有序堆积多孔介质内强制对流换热实验研究

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

基金项目:

中核核反应堆热工水力技术重点实验室基金资助项目(9140C7102010804)

国家自然基金资助项目(51025623,51106126)

Experimental Study on Forced Convective Heat Transfer in Structured Packed Porous Media with Spherical or Ellipsoidal Particles

1. Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an, 710049, China;
2. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu 610041, China

摘要: 采用"瞬态单吹反问题研究方法"实验测定圆球及椭球颗粒有序堆积多孔介质内的流动阻力系数及颗粒与流体之间的表面对流换热系数。详细研究不同颗粒形状及堆积方式下多孔介质内的对流换热规律,结果表明:通过合理选择颗粒形状和堆积方式,多孔介质内的综合换热效率显著提高,传统经验公式对颗粒有序堆积多孔介质内的对流换热不再适用。
- 颗粒有序堆积 /
- 多孔介质 /
- 强制对流 /
- 实验研究
Abstract: In this paper,the fraction factors and interstitial heat transfer coefficients in the packed porous media of spherical or ellipsoidal particles are experimentally investigated with an inverse method of transient single-blow technique.The effects of packing form and particle shape are carefully investigated.It was found that,with proper selection of particle shape and packing model,the overall heat transfer performance of porous media will be improved significantly.Furthermore,the traditional correlations for flow and heat transfer from randomly packed porous meia would not be suitable for structured packed porous media.
- Structured packing of particle /
- Porous media /
- Forced convection /
- Experimental study