Thermal Conductivity of Nanochanneled Alumina

2000 ◽  
Author(s):  
A. R. Kumar ◽  
D.-A. Achimov ◽  
T. Zeng ◽  
G. Chen
Keyword(s):  
Experimental Data ◽  
Thermal Conductivity ◽  
Experimental Study ◽  
Heat Conduction ◽  
Room Temperature ◽  
Conduction Model ◽  
Heat Conduction Model ◽  
Anisotropic Heat Conduction ◽  
3Ω Technique

Abstract We present an experimental study on the thermal conductivity of anodized alumina with regular nanochannels. Thermal conductivity values in both directions parallel and perpendicular to the nanochannel axis are measured at room temperature using the 3ω technique. An anisotropic heat conduction model is developed to analyze the experimental data.

scholarly journals Effects of anisotropic composite skin on electrothermal anti-icing system

2019 ◽  
Vol 233 (14) ◽  
pp. 5403-5413 ◽  
Author(s):  
Xiaobin Shen ◽  
Xiaochuan Liu ◽  
Guiping Lin ◽  
Xueqin Bu ◽  
Dongsheng Wen
Keyword(s):  
Thermal Conductivity ◽  
Heat Conduction ◽  
Water Film ◽  
Transfer Model ◽  
Anisotropy Axis ◽  
Mass Model ◽  
Conduction Model ◽  
Anisotropic Thermal Conductivity ◽  
Anisotropic Heat Conduction ◽  
Heat And Mass Model

To study the effects of anisotropic thermal conductivity of composite aircraft skin on the heat transfer characteristics of electrothermal anti-icing system, the differential equation of anisotropic heat conduction was established using coordinate transformation of principal anisotropy axis. In addition, it was coupled with the heat and mass transfer model of the runback water film on the anti-icing surface to perform numerical simulation of the electrothermal anti-icing system. The temperature results of the vertical and cylindrical orthotropic thermal conduction in the rectangular and semi-cylindrical composite skin were consistent with those obtained by the traditional orthotropic model, which verified the anisotropic heat conduction model. The temperature distribution of anti-icing surface agreed well with the literature data, which validated the coupled heat and mass model of the runback water flow and the anisotropic skin. The anisotropic thermal conductivity of composite skin would make temperature change more gradual, and the effect was more significant where the curvature of the temperature curve was greater. However, the anti-icing surface of the electrothermal anti-icing system was slightly affected by the anisotropic heat conduction of the multilayered composite skin.

scholarly journals Measurement of Thermal Conductivity and Selection of Heat Conduction Model for Milk and Whey.

2003 ◽  
Vol 50 (9) ◽  
pp. 399-403 ◽  
Author(s):  
Yoshiki Muramatsu ◽  
Akio Tagawa ◽  
Takamasa Kasai ◽  
Koji Takeya
Keyword(s):  
Thermal Conductivity ◽  
Heat Conduction ◽  
Conduction Model ◽  
Heat Conduction Model ◽  
Selection Of
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