Fast Calculation For The Temperature Field

Since coming into the 21st century, numerical calculation and virtual simulation has become an international academic frontiers and hot spots with the rapid development of science and technology, and the application range of calculation of temperature field in the modern industry is quite wide. The research for calculation of temperature field is mainly related to two aspects. Firstly, it is on scientific calculation, which mainly tries to achieve the accurate calculation result; secondly, it is about real-time calculation, which is mainly to make real-time surveillance for the object controlled. For different calculation of temperature fields have different requirements, it owns close relations with the applications of actual production and life. Two kinds of calculation, from certain points of view, are mutually opposite, because in the specific application, while considering the calculation accuracy is bound to affect the calculation speed and vice versa. If try to seek real-time calculations must certainly be at the expense of calculation accuracy.Looking at the status of research in today's calculation of temperature field at home and abroad, a remarkable achievement has been made in scientific calculation, that is, without regard to computation time, the true value of the calculation results can almost be reached. For example, ceramic firing, boiler furnace, different kinds of welding as well as ballistic missile warheads surface all involves in the analysis for temperature field, which requires the numerical calculation and simulation. This series of applied research obtained a good calculation accuracy, have met some of the needs of production and life, but when it involves the fact of real-time simulation, the calculation speed come across a troubled bottleneck. Therefore, this paper is to solve the issue of "fast numerical calculation of temperature field" which is also one of the most critical issues during the virtual simulation with good prospects for study. At present, the calculation of temperature field in general are aimed at specific problems and heat transfer theory to establish the appropriate temperature field model, and then using a suitable numerical analysis algorithm to deal with the temperature field model, eventually achieving the simulation of the temperature field and obtain high calculation accuracy. However, the big error, low-level real-time character now is still the biggest problem of temperature field calculation. Therefore, rapid and accurate calculation for the temperature field owns great scientific value and practical meanings.In this paper, focusing on the common problems of large quantity and weak real-time of calculation for temperature field, the thought of dynamic meshing partition is put forward, and by comparing the pros and cons of the current numerical methods, the characteristics of finite element and feature of temperature field calculation is analyzed. Combined with the characteristics of finite element method, using dynamic meshing partition technology, the paper proposed a new algorithm to reduce the size of the calculation at expense of certain calculation accuracy, and thus improve calculation speed. Firstly, establishing the three-dimensional transient numerical analysis model of temperature field, and using today's cutting-edge CUDA technology realized a rapid solution for the established model. Using parallel computing ideas quickly and accurately calculate the distribution of temperature field and achieved a good result.