泡沫金属结构的复杂性使导热-辐射耦合传热条件下有效导热系数的变化规律及影响机理分析变得极为困难.本文提出了一种结构简单且具有与泡沫金属相似几何和传热特性的圆管模型,对其导热-辐射耦合传热过程进行了相似性分析,导出了一组影响有效导热系数的相似准则数.将该组相似准则数应用于泡沫金属简化几何模型,研究了对泡沫金属内导热 辐射耦合传热过程的影响机理,并与圆管模型下的影响规律进行了对比验证.
参考文献
| [1] | R. Coquard;M. Loretz;D. Baillis .Conductive Heat Transfer in Metallic/Ceramic Open-Cell Foams[J].Advanced Engineering Materials,2008(4):323-337. |
| [2] | A. V. KUZNETSOV;MING XIONG;D. A. NIELD .Thermally Developing Forced Convection in a Porous Medium: Circular Duct with Walls at Constant Temperature, with Longitudinal Conduction and Viscous Dissipation Effects[J].Transport in porous media,2003(3):331-345. |
| [3] | C.Y. Zhao;T.J. Lu;H.P. Hodson .The temperature dependence of effective thermal conductivity of open-celled steel alloy foams[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):123-131. |
| [4] | R. Coquard;D. Rochais;D. Baillis .Experimental investigations of the coupled conductive and radiative heat transfer in metallic/ceramic foams[J].International Journal of Heat and Mass Transfer,2009(21/22):4907-4918. |
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