多孔材料气凝胶内气体与固体之间的耦合传热对其隔热性能具有较大的影响.基于气凝胶微观结构,建立了气凝胶内气固耦合传热模型,并获得了分析解.所提出的模型与文献实验数据、理论计算及数值模拟结果进行了比较,验证结果证明了本文所建立的耦合传热模型具有较高的预测精度.与已有的耦合传热模型相比,本文建立的耦合传热模型具有计算简单且预测精度较高的优点.
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