CAJ | 학술논문

堆积状态下水泥熟料的多孔质特性使得传统的气固交叉换热理论和对流换热理论难以揭示堆积体内部的换热规律。虽然渗流换热理论的引入使得堆积体换热计算结果更加接近实际，但计算过程大多忽略流体的物性变化，且计算较为复杂。本文运用拉格朗日观点和欧拉观点对高温水泥熟料堆积体的换热过程进行了分析，将真实气体状态方程引入渗流理论并结合局部热不平衡理论，建立了熟料变长度单元渗流换热数学模型，利用解析法和数值法对该模型进行求解，得到了熟料层内部流体温度和压力以及熟料温度的变化规律，研究结果为高温水泥熟料通风方案的优化提供了理论参考。
퇴적상태하수니숙료적다공질특성사득전통적기고교차환열이론화대류환열이론난이게시퇴적체내부적환열규률。수연삼류환열이론적인입사득퇴적체환열계산결과경가접근실제，단계산과정대다홀략류체적물성변화，차계산교위복잡。본문운용랍격랑일관점화구랍관점대고온수니숙료퇴적체적환열과정진행료분석，장진실기체상태방정인입삼류이론병결합국부열불평형이론，건립료숙료변장도단원삼류환열수학모형，이용해석법화수치법대해모형진행구해，득도료숙료층내부류체온도화압력이급숙료온도적변화규률，연구결과위고온수니숙료통풍방안적우화제공료이론삼고。
@@@@The traditional theory of gas-solid cross heat transfer and theory of convection heat transfer are difficult to reveal the inner heat transfer law of cement clinker porous media accumulation body because of the porous characteristics of cement clinkers in stacked state. The calculation results are closer to the physical truth with the introduction of the seepage heat transfer theory, but the physical properties changes of the fluid are mostly ignored and the method is complicated. Heat transfer program of the hot ce-ment clinker accumulation body is analyzed using the Lagrangian's joint of view and the Eular's standpoint, a mathematical seepage heat transfer model of cement clinker based on variable length unit is established through the real gas state equation being introduced into seepage theory combined with the local thermal non-equilibrium theory. Variation laws of the fluid temperature and pressure and the clinker temperature in the cement clinker layer are obtained by the combination of the analytical method and the numerical method. The research results can provide a theoretical reference for optimizing the ventilation program of the high-temperature ce-ment clinker.