On the effect of the non-constant approach velocity on the liquid film
drainage
- Runci Song,
- Luchang Han,
- Ling Zhang,
- Shangyu Tang
Abstract
A coupling framework for modeling the non-constant-velocity approach of
two fluid particles and the curved film drainage was developed, and an
improved model was presented to predict the variable-velocity approach.
Using this framework, the effect of the constant-velocity and
variable-velocity approach on liquid film drainage was investigated. Two
film drainage models based on immobile interface and fully mobile
interface were adopted. The simulation results showed that the film
thinning rate of the former is much less than that of the latter. In the
case of constant-velocity approach, the immobile interface model showed
a relatively flat curved film, while in the case of variable-velocity
approach, three types of film, wimple, pimple and dimple, can be found.
The different combinations of the drainage models and the approach
velocity boundary conditions were compared with the experiments. The
fully mobile interface model with variable-velocity approach can
reasonably predict the coalescence and rebound of bubbles.13 Jul 2020Submitted to AIChE Journal 14 Jul 2020Submission Checks Completed
14 Jul 2020Assigned to Editor
27 Jul 2020Reviewer(s) Assigned
24 Aug 2020Editorial Decision: Revise Major
22 Oct 20201st Revision Received
27 Oct 2020Submission Checks Completed
27 Oct 2020Assigned to Editor
01 Nov 2020Reviewer(s) Assigned
13 Nov 2020Editorial Decision: Revise Major
27 Dec 20202nd Revision Received
29 Dec 2020Submission Checks Completed
29 Dec 2020Assigned to Editor
06 Jan 2021Reviewer(s) Assigned
18 Jan 2021Editorial Decision: Accept