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Computation of the curvature field in numerical simulation of multiphase flow

Seungwon Shin
2007 Journal of Computational Physics  
An essential ingredient in the simulation of multiphase fluid flow with surface tension is the accurate computation of the interface curvature.  ...  Curvature effects become more significant as we decrease the length scale of the problem at hand and thus accurate computation of curvature is especially important when considering microscale multiphase  ...  Acknowledgement The author thanks Dr. D. Juric for helpful discussions.  ... 
doi:10.1016/ fatcat:df6ungv5hvfelaunoxfobiwiuq

Direct numerical simulation of multiphase flow for arbitrary geometry using level contour reconstruction method

Seungwon Shin
2009 Journal of Mechanical Science and Technology  
Direct numerical simulation of multiphase flow on fixed Eulerian grid became increasingly popular due to its simplicity and robustness.  ...  In this paper, an algorithm for handling arbitrary geometry inside fixed Eulerian computational domain with multiphase flow has been presented.  ...  Thus proper representation of the arbitrarily shaped solid structure poses additional difficulties in numerical simulation of multiphase flows.  ... 
doi:10.1007/s12206-009-0605-z fatcat:lbjqx6tx3rhgnhidudbldhm4vi

SAAMPLE: A Segregated Accuracy-driven Algorithm for Multiphase Pressure-Linked Equations

Tobias Tolle, Dieter Bothe, Tomislav Marić
2020 Computers & Fluids  
The LENT method is implemented in the Open- FOAM open source code for Computational Fluid Dynamics.  ...  Existing hybrid Level Set / Front Tracking methods have been developed for structured meshes and successfully used for efficient and accurate simulations of complex multiphase flows.  ...  Acknowledgements We kindly acknowledge the financial support by the German Research Foundation  ... 
doi:10.1016/j.compfluid.2020.104450 fatcat:2zbwke7pqzgang7fzvflvcqexy

Simulation of surface tension in 2D and 3D with smoothed particle hydrodynamics method

Mingyu Zhang
2010 Journal of Computational Physics  
In the numerical study of multiphase flows with clear interfaces, it is extremely important to accurately track the interfaces.  ...  Many numerical methods have been developed to treat the interface, including Level set method (LSM) [1], volume of fluid (VOF) [2], front tracking method (FT) [3], and phase field method [4], et al.  ...  The ghost fluid method helps to get smooth and stable calculation near the interface. Mass conservation for each phase is one of the key parts in the simulation of multiphase flows.  ... 
doi:10.1016/ fatcat:ig3rqfbnjbd6hiutselx3vzbry

Hemodynamic Computation Using Multiphase Flow Dynamics in a Right Coronary Artery

Jonghwun Jung, Ahmed Hassanein, Robert W. Lyczkowski
2006 Annals of Biomedical Engineering  
The blood flow patterns and particulate buildup were numerically simulated using the multiphase non-Newtonian theory of dense suspension hemodynamics in a realistic right coronary artery (RCA) having various  ...  A low WSS region was found in the high RBC buildup region, in particular, on the area of maximum curvature of a realistic human RCA.  ...  Panchal of ANL for their advice in the biomedical area. This study was supported under U.S. Department of Energy contract W-31-109-Eng-38.  ... 
doi:10.1007/s10439-005-9017-0 pmid:16477502 fatcat:6nxwtznazjhfzgtogqk4qqqjcy

Multiphase surface tracking with explicit contouring

Xiaosheng Li, Xiaowei He, Xuehui Liu, Baoquan Liu, Enhua Wu
2014 Proceedings of the 20th ACM Symposium on Virtual Reality Software and Technology - VRST '14  
Fluid simulation was computed on a 64 3 grid while the surface tracker computed on a 128 3 grid.  ...  Our method is easy to be implemented and incorporated into multiphase simulation, such as immiscible fluids, crystal grain growth and geometric flows.  ...  This research is supported by NSFC grant (61272326) and the grant of University of Macau.  ... 
doi:10.1145/2671015.2671017 dblp:conf/vrst/LiHLLW14 fatcat:beqc5h6j2jefpn2ou6syh5zrn4

Multiphase non-Newtonian effects on pulsatile hemodynamics in a coronary artery

Yong Hyun Kim, Pamela J. VandeVord, Joon Sang Lee
2008 International Journal for Numerical Methods in Fluids  
Multiphase non-Newtonian fluid simulations of pulsatile flow were performed and compared with the standard Newtonian fluid models.  ...  Our results demonstrated that high hematocrit levels induce secondary flow on the inside curvature of the vessel.  ...  in multiphase flow simulations.  ... 
doi:10.1002/fld.1768 fatcat:y4vacnkturdxxafwdjsdksaki4

Analysis and applications of the Voronoi Implicit Interface Method

R.I. Saye, J.A. Sethian
2012 Journal of Computational Physics  
In this paper, we present the method in detail, and demonstrate several new extensions of the method to different physical phenomena, including curvature flow with surface energy densities defined on a  ...  (and its analog in three dimensions), as well as normal driven flow and curvature flow with and without constraints, demonstrating topological change and the effects of different boundary conditions.  ...  ' [15] , for multiphase mean curvature flow.  ... 
doi:10.1016/ fatcat:4zmg42wnyjdwjlctpduualbhfu

Numerical Investigation of Vertical Plunging Jet Using a Hybrid Multifluid–VOF Multiphase CFD Solver

Olabanji Y. Shonibare, Kent E. Wardle
2015 International Journal of Chemical Engineering  
A novel hybrid multiphase flow solver has been used to conduct simulations of a vertical plunging liquid jet.  ...  In particular, a population balance approach is employed and detailed calibration of the underlying models with experimental data is required to enable quantitative prediction of bubble size and distribution  ...  Acknowledgments The authors gratefully acknowledge the computation resources of the Fission Linux Cluster at Idaho National Laboratory.  ... 
doi:10.1155/2015/925639 fatcat:nlhuwnhxgrakpaxlu4jl4xracq

Effect of the Inlet Gas Void Fraction on the Work Performance of the Multiphase Pump at Different Cavitation Stages

Guangtai Shi, Yue Dan, Xiaobing Liu, Zekui Shu
2021 Processes  
Meanwhile, the numerical simulation method was verified experimentally.  ...  To reveal the effect of the IGVF on the cavitation evolution and the work performance of the multiphase pump at different cavitation stages, the cavitation flow was calculated numerically for the pump  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/pr9061006 fatcat:qi4hpw47wbdmtoyrzgbh2h6vvi

Numerical Simulation of Monodispersed Droplet Generation in Nozzles [chapter]

Otto Mierka, Stefan Turek
2016 Process-Spray  
Subsequently, investigations in terms of numerical simulations for the rising bubble configurations have been performed and compared to reference data.  ...  Results of numerical simulations for more realistic gas-liquid systems are to be presented and compared with three dimensional experimental and computational reference results.  ...  (Tu102/32-1) and the group of Prof.  ... 
doi:10.1007/978-3-319-32370-1_13 fatcat:y2a7liibnndezmu5dvbntbx4xe

Computational Microfluidics for Geosciences

Cyprien Soulaine, Julien Maes, Sophie Roman
2021 Frontiers in Water  
Although the field is still in its infancy, the recent progress in modeling multiphase flow and reactive transport at the pore-scale has shed new light on the coupled mechanisms occurring in geological  ...  In this paper, we review the state-of-the-art computational microfluidics for geosciences, the open challenges, and the future trends.  ...  The enormous progress in high-resolution numerical simulation of complex flow and high-performance computing techniques, however, makes it possible to perform routinely computational microfluidics for  ... 
doi:10.3389/frwa.2021.643714 doaj:df90b8b68161415491091a402821a959 fatcat:d6gpzaekefckjepz2xtsfnoxti

X-ray microcomputed imaging of wettability characterization for multiphase flow in porous media: A review

Shuangmei Zou, Chenhao Sun
2020 Capillarity  
Open Access This article is distributed under the terms and conditions of the Creative Commons Attribution (CC BY-NC-ND) license, which permits unrestricted use, distribution, and reproduction in any medium  ...  Acknowledgement Shuangmei Zou would like to acknowledge the Fundamental Research Funds for the Central Universities (No. CUGGC04). Conflict of interest The authors declare no competing interest.  ...  The saturation of water and oil is computed from the segmented images at each time step. Absolute permeability can be directly computed in the pore space by numerical methods.  ... 
doi:10.46690/capi.2020.03.01 fatcat:oyq6w5txsba57duk2iu6vkjkdq

A CFD model for the coupling of multiphase, multicomponent and mass transfer physics for micro-scale simulations

Gim Yau Soh, Guan Heng Yeoh, Victoria Timchenko
2017 International Journal of Heat and Mass Transfer  
., Numerical simulation of annular flow boiling in microchannels. The Journal of Computational Multiphase Flows, 2016. 8(1): p. 61-82. 75.  ...  ., Numerical simulation of annular flow hydrodynamics in microchannels. Computers & Fluids, 2016. 133: p. 90-102. 66.  ... 
doi:10.1016/j.ijheatmasstransfer.2017.06.001 fatcat:wbfwxvsvezbsdmdt5g3qdqohni

Smoothed dissipative particle dynamics model for mesoscopic multiphase flows in the presence of thermal fluctuations

Huan Lei, Nathan A. Baker, Lei Wu, Gregory K. Schenter, Christopher J. Mundy, Alexandre M. Tartakovsky
2016 Physical review. E  
Thermal fluctuations cause perturbations of fluid-fluid interfaces and highly nonlinear hydrodynamics in multiphase flows.  ...  To analyze the effect of thermal fluctuations on surface tension, we construct a coarse-grained Euler lattice model based on the mean field theory and derive a semi-analytical formula to directly relate  ...  Thermal fluctuations cause perturbations of fluid-fluid interfaces and highly nonlinear hydrodynamics in multiphase flows.  ... 
doi:10.1103/physreve.94.023304 pmid:27627409 fatcat:xupgrfarvbdmhli4kbkfcodbai
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