Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

A three-dimensional Cartesian cut-cell/volume-of-fluid method for two-phase flows with moving bodies

Xie, Zhihua and Stoesser, Thorsten 2020. A three-dimensional Cartesian cut-cell/volume-of-fluid method for two-phase flows with moving bodies. Journal of Computational Physics 416 , 109536. 10.1016/j.jcp.2020.109536
Item availability restricted.

[img] PDF - Accepted Post-Print Version
Restricted to Repository staff only until 12 May 2021 due to copyright restrictions.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (2MB)

Abstract

A three-dimensional Cartesian cut-cell method for the large-eddy simulation of two-phase flows with moving bodies is presented in this study, which combines a volume-of-fluid method to capture the air-water interface and a moving body algorithm on a stationary, non-uniform, staggered, Cartesian grid. The filtered Navier–Stokes equations are discretised using the finite volume method with the PISO algorithm for velocity-pressure coupling and the dynamic Smagorinsky subgrid-scale model is employed to compute the effect of the unresolved (subgrid) scales of turbulence on the large scales. In the present study, the small cut-cells are unmodified and due to the use of an implicit time integration no instabilities occur during the computations. The versatility and robustness of the present two-phase flow model is illustrated via various two- and three-dimensional flow problems with fixed/moving bodies, such as dambreak flows with and without a square cylinder, a moving cylinder in a quiescent fluid, dambreak flow over a wet bed with a moving gate, water entry and exist of a circular cylinder, and landside-generated waves. Good agreement is obtained between the numerical results and the corresponding experimental measurements.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Elsevier
ISSN: 0021-9991
Funders: Royal Society
Date of First Compliant Deposit: 6 May 2020
Date of Acceptance: 4 May 2020
Last Modified: 29 Jun 2020 08:25
URI: http://orca.cf.ac.uk/id/eprint/131503

Citation Data

Cited 1 time in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics