Research On The Temperature Field Simulation Of Three-dimensional Scenes

The temperature field simulation of three-dimensional scene is based on the multidisciplinary theoretical principles to study and simulate the characteristics of the temperature distribution of the various scenes,and it is the most important part of the infrared simulation.It plays a great role in the detection and identification of target applications.The temperature distribution of the scene is one of the important features of the scene,and the accuracy of the scene temperature field simulation directly affects the quality of the infrared image.By the study of simulation on different environments, different climate, different scenarios of temperature field,we can greatly reduce the high costs of the actual measurement,and we can overcome the limitations of the measured data in the study.This thesis described the research status of the temperature field simulation of three-dimensional scenes,and elaborate simulation of the temperature field of three-dimensional scenes principle and implementation process.This thesis focused on several core modules in the simulation process such as geometric modeling,meshing,the input of boundary conditions and the temperature field calculation.This thesis studied the basic principle and algorithm of each module on the basis of analysis of each module. Combinating of system-level design,this thesis programed each module and completed the entire system.In order to verificate the accuracy of the simulation results of this system,this thesis designed an experiment. By the measurement of the temperature of the object for a particular scene,this thesis got measured data.By analysis of the temperature distribution characteristics of the scene,this thesis created a temperature calculating model. And this thesis measured environmental data for the calculation of a series of thermal parameters,then this thesis entered the data into the system software and the commercial software Ansys. This thesis got the simulation results, by comparison of the measured results and simulation results this thesis can verify the accuracy of the temperature field calculation model.And through the comparison of the simulation results on the system software and commercial software, this thesis can verify the accuracy of the calculation result of this system. For ground scenes and aerial scenes,this thesis studied the characteristics of temperature field distribution. And for typical scenes, this thesis built the temperature field calculation model. Finally, this thesis used the system simulation software, and got better simulation results.