TY - JOUR
T1 - The influence of the negative wake on the deformation and breakup of viscoelastic droplets
AU - Carril-Naranjo, Fernando
AU - Mena, Baltsar
AU - Samayoa, Didier
AU - Guerrero, Antonio
AU - Figueroa-Espinoza, Bernardo
N1 - Publisher Copyright:
© 2021, The Korean Society of Rheology and Springer.
PY - 2021/8
Y1 - 2021/8
N2 - Experiments were performed using visual and PIV techniques in order to study the appearance of a negative wake as well as its influence upon the deformation and breakup of droplets rising in viscoelastic fluids. In this report, Newtonian and viscoelastic drops were injected through different viscoelastic fluids; the deformation of the droplets was then followed and analyzed. In the case of Newtonian drops traveling through a viscoelastic fluid, a tail appears which later breaks into satellite droplets; a negative wake is present on the sides of the tail. The viscoelastic drops also exhibit a tail which is more resistant to rupture and the negative wake appears after the tail; additionally, a bump appears at the tip of the tail which enhances its elongation and determines the onset of breakup.
AB - Experiments were performed using visual and PIV techniques in order to study the appearance of a negative wake as well as its influence upon the deformation and breakup of droplets rising in viscoelastic fluids. In this report, Newtonian and viscoelastic drops were injected through different viscoelastic fluids; the deformation of the droplets was then followed and analyzed. In the case of Newtonian drops traveling through a viscoelastic fluid, a tail appears which later breaks into satellite droplets; a negative wake is present on the sides of the tail. The viscoelastic drops also exhibit a tail which is more resistant to rupture and the negative wake appears after the tail; additionally, a bump appears at the tip of the tail which enhances its elongation and determines the onset of breakup.
KW - PIV
KW - negative wake
KW - tail breakup
KW - viscoelastic droplets
UR - http://www.scopus.com/inward/record.url?scp=85113469377&partnerID=8YFLogxK
U2 - 10.1007/s13367-021-0022-0
DO - 10.1007/s13367-021-0022-0
M3 - Artículo
AN - SCOPUS:85113469377
SN - 1226-119X
VL - 33
SP - 283
EP - 291
JO - Korea Australia Rheology Journal
JF - Korea Australia Rheology Journal
IS - 3
ER -