Authors:
Nobuhiko Mukai
1
;
2
;
Takuya Natsume
1
;
Masamichi Oishi
2
and
Marie Oshima
2
;
3
Affiliations:
1
Graduate School of Integrative Science and Engineering, Tokyo City University, 1-28-1 Tamazutsumi, Setagaya, Tokyo 158-8557, Japan
;
2
Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505, Japan
;
3
Initiative in Information Industries, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8654, Japan
Keyword(s):
Fluid Dynamics, Particle Method, Wettability, Contact Angle, Adhesional Work, Spreading Work.
Abstract:
We have developed a new method of wettability, which is a feature for a liquid to keep the contact angle formed between a liquid and a solid body. Conventional models required the contact angle in advance for simulations, which angle can be measured by physical experiments. On the other hand, our new model does not need the contact angle and forms the shape of liquid on a solid body by considering adhesional and spreading works. We demonstrated that the proposed method was able to represent wettability by simulations without contact angles. This paper evaluates the proposed method by investigating the drop time of the liquid extruded from a thin tube.