北极海冰复合结构内部传热和融化机理研究

项目名称： 北极海冰复合结构内部传热和融化机理研究

项目编号： No.41276196

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 钱作勤

作者单位： 武汉理工大学

项目金额： 73万元

中文摘要： 近年来北极海冰的大规模融化成为了世界各国关注的焦点，本研究依托并结合本人亲自参加的中国第四次北极科学考察所获得的实测数据,开展北冰极海冰复合结构内部传热和融化机理研究。研究内容主要包括：（1）利用实地考察获取的海冰样品，采用自主研制的实验设备,通过现场直接测量的实验方法,测量海冰纵、横向的导热系数，比较其纵、横向结构上的传热和融化差异；（2）结合实地考察获取的实测数据作为边界条件，建立动力-热力耦合海冰模型，利用计算机数值模拟分析，研究海冰复合结构在不同热环境下的响应；（3）精心设计和构造一个实验装置和系统，详细研究在热量导入海冰的情况下，用于在海冰本体中传递的热量和用于融化海冰的热量之间的比例关系，在此基础上系统总结出海冰复合结构内部传热和融化关键过程的变化规律，最终深刻揭示北冰极海冰复合结构内部传热和融化机理，为我国大规模研究北极海冰快速融化机理奠定重要基础。

中文关键词： 北极；海冰；复合结构；传热；

英文摘要： In recent years, the large-scale melting of the Arctic sea ice has become the focus all over the world. With the measuring data obtained by myself in the Fourth Chinese National Arctic Research Expedition, a research is being carried out on the inner heat trasnfer and melting of mechanism of composite structure of sea ice of the Artic Ocean. The research includes:(1) With the samples of Arctic sea ice core obtained in the research expedition and the experimental device designed by our own laboratory independently, the thermal conductivity of radial and axial directions were measured by the methods of direct measurement in site, and the differences of thermal transmission and melting of radial and axial directions were compared.(2) The dynamical-thermal coupling model was built with the boundary condition of measuring data from the research expedition, and with the analysis of computer numerical simulation, the responses of composite structure of sea ice in different thermal conditions were studied.(3) A more accurate experiment device would be designed to study the proportional relation between the heat transferred inside the sea ice and the heat used to melt it when the heat was conducted into the sea ice. On this basis, the rules of variation of internal thermal transmission and melting process would be s

英文关键词： Arctic；Sea ice；Composite structure；Heat transfer；