3D Animation Simulation Of Interface Thermal Resistance

In the past twenty-thirty years, interface thermal resistance (ITR) has been an activity problem of heat and mass transfer. Simultaneity, it is becoming an important factor that cannot be ignored in the science and engineering. The traditional method of research is that the contact interface is regarded as planar geometry layer and the interface is the partly of real touching area in whole area. Therefore, Heat current shrinks when it passes the contact interface, which leads to ITR. But in fact, from the point of views of Micro-Nanocryogenics, there is a 3D low temperature interfacial layer, which presents the character of thickness of the order of micrometer or nanometer. The crystal structure and properties of this interfacial layer are different from that of the two contact solids. The 3D interfacial layer is the main reason that leads to ITR. Therefore, it is of great importance both in application and theory to investigate the microstructure character of the interfacial layer, ITR and the heat transport across the interfacial layer from the point of views of Micro-Nanocryogenics.The projects are supported by National Nature Science Foundation of China. In the thesis, we take the heat transfer analysis of 3D interfacial layer of two contact solids as a cut-in point and investigates the visualization simulation of 3D ITR in the condition of vacuum and micro therm.The form mechanism and affecting factors of FIR have been analysed in detail firstly. The classical models of macro mechanism research on ITR hi the aspect of the appearance of coarse interface, the distort of contact interface,thermal conductivity of contact point etc. have been discussed and compared. At the same time, there is a new way which is applied AMM to carry out micro mechanism research on ITR. It is urgent to investigate ITR using the new theory of microstructure.Least Squares method (LS) is a classical method. With the popularization and development of computer, it displays more vitality and is widely applied in curveimitating, curve approaching and so on. The thesis brings forward using LS to imitate the relation model between ITR and temperature which exists in Bi2223 and AIN in the condition of vacuum and microtherm. Same method is also applied to dope out the relation model between ITR and coarse which exists in Al and Al. In order to check the correctness of simulation model, an experiment of ITR is carried out. The error between simulation data and lab data is compared and an amend method is put forward.Visual C++ is a Object-Oriented Programming (OOP) language coming from Microsoft and now is the mainstream of program design. This thesis adopts Visual C++ to design 3D animation simulation of ITR connecting to Access to manage simulation data. The software has the following characteristic: simple and beautiful user interface; analyzing and dealing with lab data; imitating simulation models using LS; getting simulation data and saving it by adjusting simulation parameter; drawing real curve which displays simulation data and lab data; simulating macro diathennanous process and flow process of micro heat-carrier of contact interface between Bi2223 and A1N. The software is intuitionistic, dependable, beautiful and has high efficiency.