同济大学学报（自然科学版）
同濟大學學報（自然科學版）
동제대학학보（자연과학판）
JOURNAL OF TONGJI UNIVERSITY(NATURAL SCIENCE)
2010年
3期
374-379
,共6页
道路工程%路面温度场%有限差分法%半无限体%热传导%天空有效温度%误差分析
道路工程%路麵溫度場%有限差分法%半無限體%熱傳導%天空有效溫度%誤差分析
도로공정%로면온도장%유한차분법%반무한체%열전도%천공유효온도%오차분석
road engineering%pavement temperature field%finite difference method (FDM)%semi-infinite object%heat conduct%effective sky temperature%error analysis
利用有限差分法,研究了不同边界条件下路面温度场有限差分解的收敛性及网格的合理划分;分析了将路面结构温度场求解简化为半无限体热传导问题的可行性及误差、路表与天空相互辐射中路表温度和天空有效温度作一阶泰勒近似所引起的偏差;讨论了天空有效温度的估计偏差对路面温度场的影响,以及路面初始温度值偏差的消散时间.
利用有限差分法,研究瞭不同邊界條件下路麵溫度場有限差分解的收斂性及網格的閤理劃分;分析瞭將路麵結構溫度場求解簡化為半無限體熱傳導問題的可行性及誤差、路錶與天空相互輻射中路錶溫度和天空有效溫度作一階泰勒近似所引起的偏差;討論瞭天空有效溫度的估計偏差對路麵溫度場的影響,以及路麵初始溫度值偏差的消散時間.
이용유한차분법,연구료불동변계조건하로면온도장유한차분해적수렴성급망격적합리화분;분석료장로면결구온도장구해간화위반무한체열전도문제적가행성급오차、로표여천공상호복사중로표온도화천공유효온도작일계태륵근사소인기적편차;토론료천공유효온도적고계편차대로면온도장적영향,이급로면초시온도치편차적소산시간.
Based on the finite difference method,a study was made of the convergences and meshing technique for pavement temperature field in different boundary conditions.Also an analysis was made of the feasibility and calculating error for pavement temperature field in a multi-layered system being simplified to a homogeneous semi-infinite body,the error between the first order Taylor approximation of pavement surface temperature,sky effective temperature due to mutual radicalization in pavement surface and sky and actual temperature.The influence of the estimated error for sky effective temperature on pavement temperature field and the dispersing time of initial temperature error were discussed.
