摘要
在新疆严寒地区,日气温变幅较大,寒潮频发,对混凝土采取保温措施后,进行混凝土热学参数的反演过程中,根据以往的经验公式及简化计算,计算结果与实际误差较大。通过建立混凝土温度场的数学反演模型,推求混凝土的热学参数(导温系数、等效表面放热系数),并结合工程实例给出了求解过程。
The daily day temperature change is very large in Xinjiang cold area where cold waves happen frequently. After heat preservation measures are taken on concrete, big calculation errors occup in the inversion of concrete thermal parameters on the basis of experiential formula and simple calculation. An inversion mathematical model of concrete temperature field is established, which can be used to determine thermal parameters, such as thermal diffusivity and equivalent surface heat transfer coefficient. Combined with engineering practice, the process of solution is provided.
出处
《水电自动化与大坝监测》
2009年第4期63-66,84,共5页
HYDROPOWER AUTOMATION AND DAM MONITORING
关键词
严寒地区
导温系数
表面放热系数
热学参数
cold area
thermal diffusivity
surface heat transfer coefficient
thermal parameter
