Measurement and correlation of volumetric heat transfer coefficients of cellular ceramics
Measurement and correlation of volumetric heat transfer coefficients of cellular ceramics
复制标题
DOI：
10.1016/s0894-1777(98)10002-x
复制
发表时间：
1998-08
影响因子：
3.2
通讯作者：
R. V. X.Fu;J. Gore
中科院分区：
文献类型：
--
作者：
R. V. X.Fu;J. Gore
采用单吹瞬态实验技术，结合反分析方法，测量了多孔陶瓷与空气流之间的体积传热系数。研究了莫来石、YZA、SiC、堇青石以及堇青石表面LS-2涂层的试样。每厘米的孔隙数（PPC）范围从4到26和试样厚度范围从6到12毫米。根据实验数据，体积传热系数进行了概括，通过开发努塞尔数与雷诺数的相关性的形式Nuv=C Remfor的材料研究。给出并讨论了孔长尺度和试件厚度对体积传热系数的影响。
The volumetric heat transfer coefficients (hv) between cellular ceramics and a stream of air were measured using the single-blow transient experimental technique in conjunction with an inverse analysis. Test specimen made of mullite, YZA, SiC, cordierite and cordierite with LS-2 coating was studied. The number of pores per centimeter (PPC) ranged from 4 to 26 and the specimen thickness ranged from 6 to 12 mm. Based on the experimental data, the volumetric heat transfer coefficients were generalized by developing Nusselt number vs. Reynolds number correlations of the form Nuv=C Remfor the materials studied. The effects of pore length-scale and specimen thickness on the volumetric heat transfer coefficients are presented and discussed.