eprintid: 10185580
rev_number: 8
eprint_status: archive
userid: 699
dir: disk0/10/18/55/80
datestamp: 2024-01-16 17:27:24
lastmod: 2024-11-01 16:33:54
status_changed: 2024-01-16 17:27:24
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Martelo Lopez, S
creators_name: Christou, A
creators_name: Pan, S
creators_name: Stoesser, T
creators_name: Xie, Z
title: A new ghost-cell/level-set method for three-dimensional flows
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F44
keywords: Ghost-cell method, Two-phase flow, LES, Cartesian grid, Level-set method
note: Copyright © 2023 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).
abstract: This study presents the implementation of a tailored ghost cell method in Hydro3D, an open-source large eddy simulation (LES) code for computational fluid dynamics based on the finite difference method. The former model for studying the interaction between an immersed object and the fluid flow is the immersed boundary method (IBM) which has been validated for a wide range of Reynolds number flows. However, it is challenging to ensure no-slip and zero gradient boundary conditions on the surface of an immersed body. In order to deal with this, a new sharp-interface ghost-cell method (GCM) is developed for Hydro3D. The code also employs a level-set method to capture the motion of the air-water interface and solves the spatially filtered Navier-Stokes equations in a Cartesian staggered grid with the fractional step method. Both the new GCM and IBM are compared in a single numerical framework. They are applied to simulate benchmark cases in order to validate the numerical results, which mainly comprise single-phase flow over infinite circular and square cylinders for low- and high-Reynolds number flows along with two-phase dam-break flows with a vertical cylinder, in which a good agreement is obtained with other numerical studies and laboratory experiments.
date: 2024-02-15
date_type: published
publisher: Elsevier BV
official_url: https://doi.org/10.1016/j.jcp.2023.112710
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2139771
doi: 10.1016/j.jcp.2023.112710
lyricists_name: Stoesser, Thorsten
lyricists_id: TSTOE28
actors_name: Kalinowski, Damian
actors_id: DKALI47
actors_role: owner
full_text_status: public
publication: Journal of Computational Physics
volume: 499
article_number: 112710
issn: 0021-9991
citation:        Martelo Lopez, S;    Christou, A;    Pan, S;    Stoesser, T;    Xie, Z;      (2024)    A new ghost-cell/level-set method for three-dimensional flows.                   Journal of Computational Physics , 499     , Article 112710.  10.1016/j.jcp.2023.112710 <https://doi.org/10.1016/j.jcp.2023.112710>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10185580/1/Stoesser_A%20new%20ghost-cell%20level-set%20method%20for%20three%20dimensional%20flows_VoR.pdf