Deformation of multiple non-Newtonian drops in the entrance region

See Jo Kim; Sang Dae Kim; Youngdon Kwon

Korea-Australia Rheology Journal, Vol.15, No.2, 75-82, June, 2003

Export Citation

Deformation of multiple non-Newtonian drops in the entrance region

See Jo Kim^†, Sang Dae Kim, and Youngdon Kwon¹

Department of Mechanical Engineering, Andong National University, Kyungbuk 60-749, Korea
¹Textile Engineering, Sungkyunkwan University, Suwon, Kyonggi 440-746, Korea

E-mail:

In this study, with the finite element method we numerically investigate the deformation of liquid drops surrounded by Newtonian or non-Newtonian viscous medium in the axisymmetric contraction flow. 1, 2 or 4 Newtonian or non-Newtonian drops are considered and the truncated power-law model is applied in order to describe non-Newtonian viscous behavior for both fluids. In this type of flow the drop exhibits considerably large deformation, and thus techniques of unstructured mesh generation and auto-remeshing are employed to accurately express the fluid mechanical behavior. We examine the deformation pattern of liquid drops with viscosity dependence different from that of the surrounding medium and also explain their interactions by comparing relative position or speed of drop front.

Keywords:drop deformation;auto-remeshing;power-law liquid;surface tension;contraction flow;multiphase flow

[References]

Bozzi EB, Feng JQ, Scott TC, Pearlstein AJ, J. Fluid Mech., 336, 1 (1997)
Hyman WA, Skalak R, AIChE J., 18, 149 (1972)
Kim SJ, J. Korean Fiber Soc., 37, 234 (2000)
Kim SJ, Han CD, J. Rheol., 45(6), 1279 (2001)
Kim SJ, Kwon TH, Powder Technol., 85(3), 227 (1995)
Taylor GI, Proc. R. Soc. London A, 146, 501 (1934)

[Referenced By]

[1] Bozzi EB, Feng JQ, Scott TC, Pearlstein AJ, J. Fluid Mech., 336, 1 (1997)

[2] Hyman WA, Skalak R, AIChE J., 18, 149 (1972)

[3] Kim SJ, J. Korean Fiber Soc., 37, 234 (2000)

[4] Kim SJ, Han CD, J. Rheol., 45(6), 1279 (2001)

[5] Kim SJ, Kwon TH, Powder Technol., 85(3), 227 (1995)

[6] Taylor GI, Proc. R. Soc. London A, 146, 501 (1934)