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A coupled level set/volume of fluid method for simulation of two-phase flow on unstructured grids

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Abstract
We present a fully coupled level set and volume of fluid method for free surface
flow simulations on unstructured grids in two- and three-dimensions. The evolution of the level
set function and the volume fraction are updated at each time step. The level set advection
equation is solved by a least squares weighted residual method while the volume fraction
advection is solved using an unsplit Eulerian-Lagrangian scheme. The reconstruction of the
interface in the volume of fluid method is performed using the volume fraction information
together with the normal vector obtained from the level set function. The reconstructed interface
is then used to reinitialize the level set function. Thanks to the fully coupling of the two methods,
the interface reconstruction is carried out efficiently and the mass conservation is preserved
exactly. The proposed method is validated against several benchmarks and is coupled with the
incompressible Navier-Stokes solver to solve two-phase flow problems. Numerical results show
that the method is capable of resolving complex interface changes efficiently and accurately.
Author(s)
Long Cu Ngo최형권장경식
Issued Date
2021
Type
Article
Keyword
Finite element methodlevel settwo-phase flowsvolume of fluidunstructured grids
DOI
10.1007/s12206-021-0122-2
URI
https://oak.ulsan.ac.kr/handle/2021.oak/8845
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_nrf_kci_oai_kci_go_kr_ARTI_9709830&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,A%20coupled%20level%20set%2Fvolume%20of%20fluid%20method%20for%20simulation%20of%20two-phase%20flow%20on%20unstructured%20grids&offset=0&pcAvailability=true
Publisher
Journal of Mechanical Science and Technology
Location
대한민국
Language
영어
ISSN
1738-494X
Citation Volume
35
Citation Number
2
Citation Start Page
625
Citation End Page
634
Appears in Collections:
Engineering > Mechanical and Automotive Engineering
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