Výsledky vyhledávání - "Computational methods in fluid dynamics"

Dynamic mode decomposition of numerical and experimental data Autor SCHMID, PETER J.

“…The description of coherent features of fluid flow is essential to our understanding of fluid-dynamical and transport processes. A method is introduced that is…”
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A library for wall-modelled large-eddy simulation based on OpenFOAM technology Autor Mukha, T., Rezaeiravesh, S., Liefvendahl, M.

“…This work presents a feature-rich open-source library for wall-modelled large-eddy simulation (WMLES), which is a turbulence modelling approach that reduces…”
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A wave generation toolbox for the open-source CFD library: OpenFoam Autor Jacobsen, Niels G., Fuhrman, David R., Fredsøe, Jørgen

“…SUMMARY The open‐source CFD library OpenFoam® contains a method for solving free surface Newtonian flows using the Reynolds averaged Navier–Stokes equations…”
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A comprehensive framework for verification, validation, and uncertainty quantification in scientific computing Autor Roy, Christopher J., Oberkampf, William L.

“…An overview of a comprehensive framework is given for estimating the predictive uncertainty of scientific computing applications. The framework is…”
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Proper orthogonal decomposition closure models for turbulent flows: A numerical comparison Autor Wang, Zhu, Akhtar, Imran, Borggaard, Jeff, Iliescu, Traian

“…This paper puts forth two new closure models for the proper orthogonal decomposition reduced-order modeling of structurally dominated turbulent flows: the…”
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Improving variable-fidelity surrogate modeling via gradient-enhanced kriging and a generalized hybrid bridge function Autor Han, Zhong-Hua, Görtz, Stefan, Zimmermann, Ralf

“…Variable-fidelity surrogate modeling offers an efficient way to generate aerodynamic data for aero-loads prediction based on a set of CFD methods with varying…”
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Drag law for monodisperse gas–solid systems using particle-resolved direct numerical simulation of flow past fixed assemblies of spheres Autor Tenneti, S., Garg, R., Subramaniam, S.

“…► Drag law for gas–solids flow using particle-resolved simulation of fixed spheres. ► Numerical method PUReIBM based on immersed boundary method with no…”
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Optimal mode decomposition for unsteady flows Autor Wynn, A., Pearson, D. S., Ganapathisubramani, B., Goulart, P. J.

“…A new method, herein referred to as optimal mode decomposition (OMD), of finding a linear model to describe the evolution of a fluid flow is presented. The…”
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Discrete particle simulation of particle–fluid flow: model formulations and their applicability Autor ZHOU, Z. Y., KUANG, S. B., CHU, K. W., YU, A. B.

“…The approach of combining computational fluid dynamics (CFD) for continuum fluid and the discrete element method (DEM) for discrete particles has been…”
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A numerical study of natural convection in a square enclosure with a circular cylinder at different vertical locations Autor Kim, B.S., Lee, D.S., Ha, M.Y., Yoon, H.S.

“…Numerical calculations are carried out for natural convection induced by a temperature difference between a cold outer square enclosure and a hot inner…”
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CFD modeling of bubble-induced turbulence Autor Rzehak, Roland, Krepper, Eckhard

“…•New proposal of source terms in k–ε model describing bubble-effects on turbulence.•Comparison of several models for bubble-induced turbulence.•Validation of…”
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IMMERSED BOUNDARY METHODS Autor Mittal, Rajat, Iaccarino, Gianluca

“…The term 'immersed boundary method' was first used in reference to a method developed by Peskin (1972) to simulate cardiac mechanics and associated blood flow…”
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A data-assimilation method for Reynolds-averaged Navier–Stokes-driven mean flow reconstruction Autor Foures, Dimitry P. G., Dovetta, Nicolas, Sipp, Denis, Schmid, Peter J.

“…We present a data-assimilation technique based on a variational formulation and a Lagrange multipliers approach to enforce the Navier–Stokes equations. A…”
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CFD modeling for pipeline flow of fine particles at high concentration Autor Kaushal, D.R., Thinglas, T., Tomita, Yuji, Kuchii, Shigeru, Tsukamoto, Hiroshi

“…Velocity and slip-velocity distributions, that have never been measured experimentally at such higher concentrations up to 50% by volume, predicted by…”
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Numerical investigation of droplet motion and coalescence by an improved lattice Boltzmann model for phase transitions and multiphase flows Autor Gong, Shuai, Cheng, Ping

“…► An improved LBM multiphase model is proposed. ► A new scheme for the force term is proposed. ► We compared existing force incorporation methods and adopted…”
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Well-posed systems—The LTI case and beyond Autor Tucsnak, Marius, Weiss, George

“…This survey is an introduction to well-posed linear time-invariant (LTI) systems for non-specialists. We recall the more general concept of a system node,…”
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Evaluation of level set and phase field methods in modeling two phase flow with viscosity contrast through dual-permeability porous medium Autor Akhlaghi Amiri, H.A., Hamouda, A.A.

“…► Level set method (LSM) and phase field method (PFM) are compared. ► Different two-phase flow problems are simulated using LSM and PFM. ► PFM better captures…”
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Fluid–particle flow simulations using two-way-coupled mesoscale SPH–DEM and validation Autor Robinson, Martin, Ramaioli, Marco, Luding, Stefan

“…[Display omitted] •We present a simulation method for fluid–particle flows using coupled SPH and DEM.•Purely particle-based method, no prescribed…”
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A generic interface for parallel cell-based finite element operator application Autor Kronbichler, Martin, Kormann, Katharina

“…► Implementation framework for finite element operator application. ► Efficient data structures for high performance, including sum-factorization. ► Hybrid…”
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A high-order moment approach for capturing non-equilibrium phenomena in the transition regime Autor GU, XIAO-JUN, EMERSON, DAVID R.

“…The method of moments is employed to extend the validity of continuum-hydrodynamic models into the transition-flow regime. An evaluation of the regularized 13…”
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