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一、前言 当高温气体流经多孔体时,多孔体中的传热至少是对流和辐射两种传热现象的耦合。近年来,在这方面的研究愈来愈多,多孔体自身的几何特征使它独具许多潜在的功能,并被应用在愈来愈广泛的技术领域中。 多孔体有各种不同的结构形式。我们采用的为蜂窝陶瓷,与泡沫陶瓷或金属网迥然不同。蜂窝陶瓷与其它结构形式多孔体相比较,其优点在于使用过程中不易被灰尘堵塞。
I. Introduction When the hot gas flows through the porous body, the heat transfer in the porous body is at least the coupling of two heat transfer phenomena, convection and radiation. In recent years, there are more and more researches in this field. The geometric characteristics of porous body make it have many potential functions and are applied in more and more widespread technical fields. Porous body has a variety of different forms of structure. We use a honeycomb ceramic, and foam ceramic or metal mesh very different. Honeycomb ceramic porous structure compared with other structures, the advantage is that the process is not easy to clogged with dust.