Particle-based Ice Melting Simulation With Air Model And Water Ice Interaction

Ice melting is a fantastic phenomenon.It is very common in our daily life.Realistic simulation of ice melting is widely applied to movies,video games and virtual reality which make it a valuable research subject.Ice melting process consists of complex physics,including phase change as a result of heat transfer and movement of meltwater.Currently,physical modeling of the melting process,heat transfer and phase change,interactions of multi-phase fluid are attractive to researchers.In the field of ice melting simulation,there are several problems.The heat transfer is inaccurate,the formation and motion of water droplets are ignored and the calculation of interaction between water and ice is unstable.Focused on these problems,we proposed a particle-based method for modeling of ice,water and air.We improved the heat conduction equation for effective calculation of temperature change.We correct the instability in density summation of boundary particles.And a model for interaction between water and ice is brought out with the simulation of surface tension force and adhesion force.The result showed that our method is realistic and stable.Here lists our contributions.(1)We proposed a particle-based ice melting simulation method taking air model and small-scale water drops into account.The melting process is dynamically simulated with air,water and ice modeled by particles which are analogous to their microstructure.We dynamically simulate ice melting process by states change between ice and water particles and flowing of water particles.The air particle model contributes to a more accurate heat transfer process.Meanwhile,ice and air particles are used in the density summation of water particles which confirms the stability of the motion of water drops.(2)A more accurate heat transfer model is brought out.The air is divided into two parts in our air model.First particle is the air particles near the ice-water surface with the property of temperature.The second part is the constant temperature field which is far from the ice-water surface.We achieved an accurate simulation of heat conduction around ice surfaces with heat energy transferred between air,water and ice particles.Meanwhile,the distant air which makes little impact is approximated with a constant for better performance.(3)We proposed a proper model for interaction between water and ice which contributes to the small-scaled water drop simulation in the melting process.To solve the inaccurate density calculation problem near the boundary,we took use of the sampled air particles and ice particles in the density summation of water particles.And then,we introduced a surface tension model and an adhesion model which are robust for simulation of interactions of water particles and between water and ice particles.Lastly,we defined adhesion water particles.By correcting the velocities of adhesion water particles,we made the water particles move along the ice surfaces,eliminating the penetration and separation effect of water particles.(4)With the simulation of ice melting and the small-scaled water drops,we proved the effectiveness of our method.Compared to the previous method,our method is more realistic in heat transfer process and more stable in detailed water drops simulation.