中国工程科学
中國工程科學
중국공정과학
ENGINEERING SCIENCE
2014年
4期
106-112
,共7页
锯材%高频-对流干燥%数学模型%差分方程
鋸材%高頻-對流榦燥%數學模型%差分方程
거재%고빈-대류간조%수학모형%차분방정
timber%radio-frequency-convective drying%mathematical model%difference equation
本文以多孔介质传热传质理论为基础,结合高频-对流联合加热干燥过程中热质传递的机理及特性,通过质量、动量、能量守恒方程等建立了高频-对流联合加热干燥过程中锯材热质传递数学模型并给出相应定解条件。模型中每个自变量及因变量都有独立的控制方程,利用控制容积法建立相应控制方程的差分格式,将耦合偏微分方程按步骤解耦,以便于利用Matlab或FORTRAN等编程求解时,达到每个自变量均可以独立求解的目的。
本文以多孔介質傳熱傳質理論為基礎,結閤高頻-對流聯閤加熱榦燥過程中熱質傳遞的機理及特性,通過質量、動量、能量守恆方程等建立瞭高頻-對流聯閤加熱榦燥過程中鋸材熱質傳遞數學模型併給齣相應定解條件。模型中每箇自變量及因變量都有獨立的控製方程,利用控製容積法建立相應控製方程的差分格式,將耦閤偏微分方程按步驟解耦,以便于利用Matlab或FORTRAN等編程求解時,達到每箇自變量均可以獨立求解的目的。
본문이다공개질전열전질이론위기출,결합고빈-대류연합가열간조과정중열질전체적궤리급특성,통과질량、동량、능량수항방정등건립료고빈-대류연합가열간조과정중거재열질전체수학모형병급출상응정해조건。모형중매개자변량급인변량도유독립적공제방정,이용공제용적법건립상응공제방정적차분격식,장우합편미분방정안보취해우,이편우이용Matlab혹FORTRAN등편정구해시,체도매개자변량균가이독립구해적목적。
The research based on the theory of porous medium heat and mass transfer,com-bined with the mechanism and characteristics of heat mass transfer in radio-frequency and con-vective drying,establish the mathematical model and give the definite condition through mass momentum and energy conservation equations. Each independent and dependent variable has in-dependent control equation. Use the finite volume method to establish difference equation for to decouple the coupled partial differential equations,so that each independent variable can be solved independently when programming in Matlab or FORTRAN .