Abstract:

In order to solve the current life-limited problem of the LED(Light Emitting Diode) with the power increasing, we made an optimization design of the existing LED track light radiator structure and the driving circuit. This design chooses the graphical interface application Ansys as a development platform, integrates
design of the simulation combined with the experimental data by using Gambit subdivision and Fluent software temperature field simulation. We choose the 50 W power LED heat distribution model as an example, present a distribution mechanism of LED temperature, the analytical model of the temperature field, the theoretical formula, the experimental field measurement data and the analysis of the simulation graph. The research showed that the new LED optimized thermal design realized the increase of LED power from 30 W to 50 W, while achieving the LED using temperature decreased from 80 ℃to 76 ℃. So the model achieved the extension of service life and the improved effect of lighting.

Key words: finite element method (FEM), Gambit subdivision, Fluent simulate temperature field