The Migration Simulation Of Radon And Its Daughters And Visualization System

The migration mechanism of radon and its daughters is the basic physical properties for the research of radon hazards and application. In this thesis, the mathematical model is established by the improved helium-radon cluster migration model based on the theoretical hypotheses, which combines the theory of dynamics and diffusion. With the help of the computer simulation, we have designed the simulation system of radon and its daughters simulation. The system offers an intuitive graphical interface of radon migration, and provides the simulation of the transport parameters and distribution in different directions, by the way of Visualization in Scientific Computing and Computer Graphics displaying principle.In order to improving the precision, a constant-temperature PVC pipe equipment overcoming the influence from convection, temperature difference and pressure difference has been designed. Based on experiments about radon migration in the horizontal direction, a series of results have been gained under the equipment we have realized. After analyzing the experimental data and computer simulation results, we got satisfactory results.According to our experiments combined with the result of the migration Simulation & Visualization System, we give a new method in researching the Radon -Helium cluster migration. After the test, its simulation performance meets the design requirements. Further, it illuminates that the technology of computer simulation used in the migration of radon and its daughters is right in theory and feasible in practice.