Research On Temperature And Velocity Distribution In The Environment Simulation Laboratory

This article aimed to demonstrate that this method of numerical simulation was feasible to analyze the internal temperature field and the velocity field in the environment simulation laboratory.This section of numerical simulation carried on the numerical simulation software Airpak and established the model of k-e to research this project. When the grids were built, the grids around the solar simulator were made more compact so as to describe the temperature field and the velocity field more accurately. Besides, both in the simulation and in the experiment, the change of the solar radiation was realized by changing the altitude of the solar simulator. And the change of wind velocity outdoor in that zone was realized by changing the outlet velocity of the fans. Both of the changes mentioned above were so as to research the distribution of the temperature, velocity as well as the solar radiation. Then, the characteristic section was selected in the laboratory. Both of the methods of simulation and experiment were adopted in order to acquire the distribution of temperature field and velocity field as well as solar radiation value. Finally, compare the results of experiment with the ones of the simulation.By analyzing the results of simulation and experiment, when the altitude of the solar simulator was 2.5m and the outlet velocity was 1m/s, the distribution of the temperature and the velocity was very asymmetry. However, when the outlet velocity was increased to the 2m/s under the same altitude of the solar simulator, the short circuit of the flow began to appear and the turbulence around the outlets of the fans was strengthened. This phenomenon of the flow short-circuit appeared more apparently, while the short circuit began to appear just when the outlet velocity was 4m/s under the condition that thealtitude of the solar simulator was 2m. Meanwhile, the value of the solar radiation was lowered obviously while the solar simulator was lifted. Besides, the influence of the outlet velocity to the value of solar radiation can be neglected.