Article (Scientific journals)
Particle-based adaptive coupling of 3D and 2D fluid flow models
SUCHDE, Pratik
2024In Computer Methods in Applied Mechanics and Engineering, 429, p. 117199
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Keywords :
meshfree; cfd; free surface flow; shallow water; model adaptivity; discretization adaptivity
Abstract :
[en] This paper proposes the notion of model adaptivity for fluid flow modelling, where the under- lying model (the governing equations) is adaptively changed in space and time. Specifically, this work introduces a hybrid and adaptive coupling of a 3D bulk fluid flow model with a 2D thin film flow model. As a result, this work extends the applicability of existing thin film flow models to complex scenarios where, for example, bulk flow develops into thin films after striking a surface. At each location in space and time, the proposed framework automatically decides whether a 3D model or a 2D model must be applied. Using a meshless approach for both 3D and 2D models, at each particle, the decision to apply a 2D or 3D model is based on the user-prescribed resolution and a local principal component analysis. When a particle needs to be changed from a 3D model to 2D, or vice versa, the discretization is changed, and all relevant data mapping is done on-the-fly. Appropriate two-way coupling conditions and mass conservation considerations between the 3D and 2D models are also developed. Numerical results show that this model adaptive framework shows higher flexibility and compares well against finely resolved 3D simulations. In an actual application scenario, a 3 factor speed up is obtained, while maintaining the accuracy of the solution.
Disciplines :
Mechanical engineering
Engineering, computing & technology: Multidisciplinary, general & others
Aerospace & aeronautics engineering
Mathematics
Author, co-author :
SUCHDE, Pratik  ;  University of Luxembourg
External co-authors :
no
Language :
English
Title :
Particle-based adaptive coupling of 3D and 2D fluid flow models
Publication date :
September 2024
Journal title :
Computer Methods in Applied Mechanics and Engineering
ISSN :
0045-7825
eISSN :
1879-2138
Publisher :
Elsevier BV
Volume :
429
Pages :
117199
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
European Projects :
H2020 - 892761 - SURFING - Flow on thin fluid sheets
Name of the research project :
U-AGR-6054 - IAS-AUDACITY ADONIS - BORDAS Stéphane
Funders :
Marie Skłodowska-Curie Actions
Union Européenne
Funding text :
Pratik Suchde would like to acknowledge partial support from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Actions grant agreement No. 892761 ‘‘SURFING’’. Pratik Suchde would also like to acknowledge funding from the Institute of Advanced Studies, University of Luxembourg, under the AUDACITY programme grant ‘‘ADONIS’’.
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