Simulation Of Condensation Phenomenon Based On Air Heat Exchange

Realistic natural phenomenon has a wide range of applications in virtual reality,video effect,training simulation,etc.As one of the common phenomenon of heat exchange,the proceeding of condensation was hard to explained correctly.Traditional methods based on geometric description of the air model could not restore the details,and the dynamic phase transition in condensation was ignored.After phase changes,the traces of the condensed water drop on the solid surface and the remaining droplets were not reflected in the rendered results.Rough boundary treatment methods brought the infiltration effect and the lack of heat exchange process and the natural phenomenon of the simulation coupled with artificial traces.In order to highlight the details of the condensation based on the physical law,we use the particle model to describe the phenomenon,In this paper,we adopt smooth particle hy-drodynamic to model air flow and simulate the realistic heat exchange of air,discretize heat exchange process and obtain an intuitive particle system.The position of the condensed droplets is accurately calculated by the interaction between the particle model and the heat exchange.To lower the order of magnitude of the particles,the particle filter mechanism is introduced to keep enough heat exchange of air particles.Then,we adopt the external equivalent of the alternative method and take the external factors into account to ensure the physical correctness and accelerate the algorithm.An optimized boundary treatment method is proposed to improve the mechanism of particle heat exchange and to provide sufficient heat exchange opportunities while avoiding particle penetration.The atmospheric friction and humidity diffusion models are introduced to describe the dynamic phase transition process so that the movement of the con-densed droplets is more real.Finally,height map is built to create a grid on the solid surface and describe the shape and motion of the droplet,merging,residual and trajectory left after the movement.This paper is based on the physical modeling of the condensation process,and highlights the details of the condensation process.After the comparison of test verification and effect,the method presented in this paper is proved to be efficient and distinct.