0
Evaporation, Boiling, and Condensation

Numerical Simulation of Microdroplet Impact and Evaporation on a Solid Surface

[+] Author and Article Information
Gihun Son1

Department of Mechanical Engineering,  Sogang University, Seoul 121-742, South Koreagihun@sogang.ac.kr

1

Corresponding author.

J. Heat Transfer 134(10), 101502 (Aug 07, 2012) (10 pages) doi:10.1115/1.4006594 History: Received March 23, 2011; Revised April 03, 2012; Published August 06, 2012; Online August 07, 2012

Microdroplet impact and evaporation on a solid surface, which is an integral part of an inkjet printing process, is studied numerically by solving the equations governing the conservation of mass, momentum, energy, and mass fraction in the liquid and gas phases. The deformed droplet shape is tracked by a sharp-interface level-set method, which is extended to include the effects of evaporation at the liquid–gas interface and dynamic contact angle at the liquid–gas–solid interline. The numerical results show that the droplet impact and evaporation pattern depends significantly on the advancing and receding contact angles. Also, the effect of cavity sidewall on the droplet motion is investigated.

FIGURES IN THIS ARTICLE
<>
Copyright © 2012 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Configuration for analysis of droplet impact and evaporation: (a) before and (b) after impact

Grahic Jump Location
Figure 2

Droplet deformation during the whole period of droplet impact and evaporation at θa  = 90 deg and θr  = 25 deg

Grahic Jump Location
Figure 3

Velocity field at θa  = 90 deg and θr  = 25 deg

Grahic Jump Location
Figure 4

Temperature field at θa  = 90 deg and θr  = 25 deg. The interval between temperature contours is 5 °C for t < 1 ms and 1 °C for t > 1 ms.

Grahic Jump Location
Figure 5

Vapor mass fraction field at θa  = 90 deg and θr  = 25 deg. The interval between vapor fraction contours is 0.02.

Grahic Jump Location
Figure 6

Temporal variation of droplet contact diameter and height at θa  = 90 deg and θr  = 25 deg: (a) early period and (b) whole period

Grahic Jump Location
Figure 7

Effect of contact angle on droplet impact and evaporation: (a) early period and (b) whole period

Grahic Jump Location
Figure 8

Droplet impact and evaporation in a circular cavity at θa  = 90 deg and θr  = 25 deg

Grahic Jump Location
Figure 9

Velocity field near the evaporating droplet surrounded by a cavity sidewall at θa  = 90 deg and θr  = 25 deg

Grahic Jump Location
Figure 10

Temperature field near the evaporating droplet surrounded by a cavity sidewall at θa  = 90 deg and θr  = 25 deg. The interval between temperature contours is 5 °C for t < 1 ms and 1 °C for t > 1 ms.

Grahic Jump Location
Figure 11

Vapor mass fraction field near the evaporating droplet surrounded by a cavity sidewall at θa  = 90 deg and θr  = 25 deg. The interval between vapor fraction contour is 0.02.

Grahic Jump Location
Figure 12

Effect of cavity sidewall on droplet impact and evaporation at θa  = 90 deg and θr  = 25 deg: (a) early period and (b) whole period

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In