Thumbnail
Access Restriction
Open

Author Nakata, Nobuyuki ♦ Chiba, Kashiwa ♦ Kakimoto, Masanori ♦ Nishita, Tomoyuki
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Water Droplet ♦ Glass Material ♦ Dynamic Hydrophobicity ♦ Common Solution ♦ Real-time Animation Method ♦ Water Drop ♦ Automobile Industry ♦ Hydrophobic Glass Windshield ♦ Running Vehicle Model ♦ Advanced Driving Game ♦ Water-attracting Nature ♦ Normal Map ♦ External Force ♦ Contact Angle Hysteresis Accounting ♦ Simulation Scheme ♦ Mass Point ♦ Water Droplet Animation Method ♦ Huge Number ♦ Virtual Water Droplet ♦ Tiny Droplet ♦ Lotus Effect ♦ Driver Clear Vision ♦ Air Resistance ♦ Special Effect ♦ Hydrophobic Windshield ♦ Large Droplet
Abstract Animation of water drops on a windshield is used as a special effect in advanced driving games and simulators. Existing water droplet animation methods trace the trajectories of the droplets on the glass taking into account the hydrophilic or water-attracting nature of the glass material. Meanwhile, in the automobile industry, usage of hydrophobic glass windshields has recently been a common solution for the drivers ’ clear vision in addition to cleaning the water with wipers. Water drops on a hydrophobic windshield behave differently from those on a hydrophilic one. This paper proposes a real-time animation method for water droplets on a windshield taking account of hydrophobicity. Our method assumes each relatively large droplet as a mass point and simulates its movement using contact angle hysteresis accounting for dynamic hydrophobicity as well as other external forces such as gravity and air resistance. All of a huge number of still, tiny droplets are treated together in a normal map applied to the windshield. We also visualize the Lotus effect, a cleaning action by the moving droplets. Based on the proposed simulation scheme, this paper demonstrates the motion of the virtual water droplets on the windshield of a running vehicle model.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article