Simulation of a Two-Phase Microcapsule Spraying onto a Solid Wall

DOI

10.2991/icmse-15.2015.341How to use a DOI?

Keywords

Microcapsule; Spray; Critical velocity; Breakup; Impact.

Abstract

Spraying microcapsules with polymeric shell onto a solid wall may be a way to fabricate multilayer films. Better understanding of the deformation and breakup of the microcapsule under spraying is of great importance for developing this technique. A two-phase finite element model was developed using the software Autodyn to simulate the normal spraying process. In light of the dichotomy method, we obtained the critical velocity for a microcapsule to be broken. The simulations for various microcapsule shell thickness showed that the critical velocity increased with an increase of the shell thickness. The thermal analysis revealed that the maximum temperature of the microcapsule appeared around the center of the contact region at the beginning of the spraying, and later it moved to the edges of the contact region. The increased temperature of the microcapsule was 10.6K at 100m/s, while it was amazing up to 180.5K at 1000m/s. High temperature might affect the film formation and then production quality after the release of the fluid.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhimin Xie
AU  - Zhuwang Huang
AU  - Yuyan Liu
PY  - 2015/12
DA  - 2015/12
TI  - Simulation of a Two-Phase Microcapsule Spraying onto a Solid Wall
BT  - Proceedings of the 2015 6th International Conference on Manufacturing Science and Engineering
PB  - Atlantis Press
SP  - 1877
EP  - 1881
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmse-15.2015.341
DO  - 10.2991/icmse-15.2015.341
ID  - Xie2015/12
ER  -