Numerical study of Taylor bubbles with adaptive unstructured meshes
Xie, Zhihua ; Pavlidis, Dimitrios ; Percival, James ; Pain, Christopher ; Matar, Omar ; Hasan, Abbas; Azzopardi, B.
Dr Abbas Hasan A.Hasan@hull.ac.uk
The Taylor bubble is a single long bubble which nearly fills the entire cross section of a liquid-filled circular tube. This type of bubble flow regime often occurs in gas-liquid slug flows in many industrial applications, including oil-and-gas production, chemical and nuclear reactors, and heat exchangers. The objective of this study is to investigate the fluid dynamics of Taylor bubbles rising in a vertical pipe filled with oils of extremely high viscosity (mimicking the ``heavy oils'' found in the oil-and-gas industry). A modelling and simulation framework is presented here which can modify and adapt anisotropic unstructured meshes to better represent the underlying physics of bubble rise and reduce the computational effort without sacrificing accuracy. The numerical framework consists of a mixed control-volume and finite-element formulation, a ``volume of fluid''-type method for the interface capturing based on a compressive control volume advection method, and a force-balanced algorithm for the surface tension implementation. Numerical examples of some benchmark tests and the dynamics of Taylor bubbles are presented to show the capability of this method.
Hasan, A., Xie, Z., Pavlidis, D., Percival, J., Pain, C., Matar, O., & Azzopardi, B. (2014, November). Numerical study of Taylor bubbles with adaptive unstructured meshes. Presented at 67th Annual Meeting of the APS Division of Fluid Dynamics, San Francisco, USA
|Presentation Conference Type||Other|
|Conference Name||67th Annual Meeting of the APS Division of Fluid Dynamics|
|Conference Location||San Francisco, USA|
|Start Date||Nov 23, 2014|
|Deposit Date||Sep 16, 2019|
You might also like
Churn flow in high viscosity oils and large diameter columns
Behavior and pressure drop of an upwardly two-phase flow through multi-hole orifices
Experimental investigation of a vertically downward two-phase air-water slug flow