TU Darmstadt / ULB / TUbiblio

Numerical study on the wettability dependent interaction of a rising bubble with a periodic open cellular structure

Cai, Xuan ; Wörner, Martin ; Marschall, Holger ; Deutschmann, Olaf (2016)
Numerical study on the wettability dependent interaction of a rising bubble with a periodic open cellular structure.
In: Catalysis Today, 273
doi: 10.1016/j.cattod.2016.03.053
Article, Bibliographie

Abstract

A phase-field method for interface resolving numerical simulations of two-phase flows with OpenFOAM® is validated for the buoyancy-driven rise of a single air bubble through a viscous stagnant liquid using experimental data from literature. The validation encompasses the terminal bubble rise velocity and the instantaneous cutting of the bubble by a solid horizontal cylinder. In the latter process, the numerical method takes into account the equilibrium contact angle of the three-phase system. The numerical method is then used to study the behavior of a single air bubble rising through a representative subdomain of a periodic open cellular structure (POCS) with cubic cell geometry filled with stagnant water. The results indicate that the bubble shape and path do significantly depend on the structure wettability. In the industrial application of POCS for enhancing mass transfer and as catalytic supports, the utilization of structures with high wettability (low contact angles) is expected to be beneficial.

Item Type: Article
Erschienen: 2016
Creators: Cai, Xuan ; Wörner, Martin ; Marschall, Holger ; Deutschmann, Olaf
Type of entry: Bibliographie
Title: Numerical study on the wettability dependent interaction of a rising bubble with a periodic open cellular structure
Language: English
Date: 2016
Place of Publication: Amsterdam
Publisher: Elsevier
Journal or Publication Title: Catalysis Today
Volume of the journal: 273
DOI: 10.1016/j.cattod.2016.03.053
Abstract:

A phase-field method for interface resolving numerical simulations of two-phase flows with OpenFOAM® is validated for the buoyancy-driven rise of a single air bubble through a viscous stagnant liquid using experimental data from literature. The validation encompasses the terminal bubble rise velocity and the instantaneous cutting of the bubble by a solid horizontal cylinder. In the latter process, the numerical method takes into account the equilibrium contact angle of the three-phase system. The numerical method is then used to study the behavior of a single air bubble rising through a representative subdomain of a periodic open cellular structure (POCS) with cubic cell geometry filled with stagnant water. The results indicate that the bubble shape and path do significantly depend on the structure wettability. In the industrial application of POCS for enhancing mass transfer and as catalytic supports, the utilization of structures with high wettability (low contact angles) is expected to be beneficial.

Divisions: Profile Areas
Profile Areas > Thermo-Fluids & Interfaces
Date Deposited: 28 Feb 2018 10:22
Last Modified: 07 Dec 2023 08:46
PPN:
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)
Show editorial Details Show editorial Details