Browse > Article
http://dx.doi.org/10.3795/KSME-B.2005.29.2.205

Numerical Study on Drop Formation Through a Micro Nozzle  

Kim Sungil (서강대학교 대학원 기계공학과)
Son Gihun (서강대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.29, no.2, 2005 , pp. 205-213 More about this Journal
Abstract
The drop ejection process from a micro nozzle is investigated by numerically solving the conservation equations for mass and momentum. The liquid-gas interface is tracked by a level set method which is extended for two-fluid flows with irregular solid boundaries. Based on the numerical results, the liquid jet breaking and droplet formation behavior is found to depend strongly on the pulse type of forcing pressure and the contact angle at the gas-liquid-solid interline. The negative pressure forcing can be used to control the formation of satellite droplets. Also, various nozzle shapes are tested to investigate their effect on droplet formation.
Keywords
Contact Angle; Drop Formation; Level Set; Micro Nozzle;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Shield, T. W., Bogy, D. B. and Talke, F. E., 1987, 'Drop Formation by DOD Inkjet Nozzles: a Comparison of Experiment and Numerical Simulation,' IBM J. Research Development, Vol. 31, pp. 96-110   DOI
2 Asai, A., Hara, T. and Endo, I., 1988, 'One-Dimensional Model of Bubble Growth and Liquid Flow in Bubble Jet Printers,' Japanese J. Applied Physics, Vol. 26, pp. 1794-1801   DOI
3 Chen, P. H., Chen, W. C., Ding, P. P. and Chang, S. H., 1998, 'Droplet Formation of a Thermal Sideshooter Inkjet Printhead,' Int. J. Heat and Fluid Flow, Vol. 19, pp. 382-390   DOI   ScienceOn
4 Son, G., 2001, 'A Numerical Method for Bubble Motion with Phase Change,' Numerical Heat Transfer, Part B, Vol. 39, pp. 509-523   DOI   ScienceOn
5 FLOW-3D, 2003, version 8.2, flow science Inc.
6 Dennis, S. C. R. and Chang, G. Z., 1970, 'Numerical Solution for Steady Flow Past a Circular Cylinder at Reynolds Numbers up to 100,' J. Fluid Mech., Vol. 42, pp. 471-489   DOI
7 Fornberg, B., 1980, 'A Numerical Study of Steady Viscous Flow Past a Circular Cylinder,' J. Fluid Mech., Vol. 98, pp. 819-855   DOI   ScienceOn
8 Wu, H. C., Hwang, W. S. and Lin, H. J., 2004, 'Development of a Three-Dimensional Simulation System for Micro-Inkjet and its Experimental Verification,' Materials Science and Engineering, Vol. 373, pp. 268-278   DOI   ScienceOn
9 Kothe, D. B., Mjolsness, R. C. and Torrey, M. D., 1991, RIPPLE: A Computer Program for Incompressible Flows with Free Surfaces, Technical Report LA-12007-MS, LANL, Los Alamos, NM
10 Sussman, M., Smereka, P. and Osher, S., 1994, 'A Level Set Approch for Computing Solution to Incompressible Two-Phase Flow,' J. Comput. Phys., Vol. 114, pp. 146-159   DOI   ScienceOn
11 Son, G., 2001, 'Numerical Simulation of Bubble Motion During Nucleate Boiling,' Trans. of the KSME (B), Vol. 25, No.3, pp. 389-396   과학기술학회마을
12 Liou, T. M., Shih, K. C., Chau, S. W. and Chen, S. C., 2002, 'Three-Dimensional Simulations of the Droplet Formation During the Inkjet Printing Process,' Int. Comm. Heat Mass Transfer, Vol. 29, pp. 1109-1118   DOI   ScienceOn
13 Fromm, J. E., 1984, 'Numerical Calculation of the Fluid Dynamics of Drop-on-Demand Jets,' IBM J. Research Development, Vol. 28, pp. 323-333