TY - JOUR
T1 - Unstable waves on a curved non-Newtonian liquid jet
AU - Hawkins, VL
AU - Gurney, Christopher
AU - Decent, Stephen
AU - Simmons, Mark
AU - Uddin, Jamal
PY - 2009/1/1
Y1 - 2009/1/1
N2 - A spiralling slender non-Newtonian liquid jet emerging from a rapidly rotating orifice is examined. The effect of the non-Newtonian rheology on the trajectory of the jet and its linear instability are determined using a mixture of computational and asymptotic methods. The sizes of the droplets produced by this instability are determined by considering the most unstable wave mode. This enables a quantitative comparison between theoretical and experimental results to be made, by comparing droplet sizes predicted from the theory with experimental measurements. At lower Weber numbers some good points of agreement have been obtained. At higher Weber numbers jet break-up becomes increasingly complex and the possibility of break-up being due to absolute, rather than convective, instability is discussed.
AB - A spiralling slender non-Newtonian liquid jet emerging from a rapidly rotating orifice is examined. The effect of the non-Newtonian rheology on the trajectory of the jet and its linear instability are determined using a mixture of computational and asymptotic methods. The sizes of the droplets produced by this instability are determined by considering the most unstable wave mode. This enables a quantitative comparison between theoretical and experimental results to be made, by comparing droplet sizes predicted from the theory with experimental measurements. At lower Weber numbers some good points of agreement have been obtained. At higher Weber numbers jet break-up becomes increasingly complex and the possibility of break-up being due to absolute, rather than convective, instability is discussed.
U2 - 10.1088/1751-8113/43/5/055501
DO - 10.1088/1751-8113/43/5/055501
M3 - Article
VL - 43
JO - J. Phys. A: Mathematical and Theoretical
JF - J. Phys. A: Mathematical and Theoretical
ER -