Journal ArticleDOI
An immersed-boundary finite-volume method for simulations of flow in complex geometries
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In this paper, a new immersed-boundary method for simulating flows over or inside complex geometries is developed by introducing a mass source/sink as well as a momentum forcing.About:
This article is published in Journal of Computational Physics.The article was published on 2001-07-01. It has received 1090 citations till now. The article focuses on the topics: Immersed boundary method & Mixed boundary condition.read more
Citations
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Control of laminar vortex shedding behind a circular cylinder using tabs
TL;DR: In this article, small flat plates (called tabs hereafter) are attached to the upper and lower surfaces of a circular cylinder to control vortex shedding and reduce the mean drag and lift fluctuations at the Reynolds number of 100.
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Modelling the Influence of Aquatic Vegetation on the Hydrodynamics of an Alternative Bank Protection Measure in a Navigable Waterway
TL;DR: In this paper, a simulation of a rehabilitation structure for aquatic organisms in a shallow, wave-protected, littoral habitat of the urban Spree River was performed using computational fluid dynamics (CFD).
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Interaction problem between fluid and membrane by a consistent direct discretisation approach
TL;DR: The validity of the present “consistent direct discretisation” is established through comparisons with the analytical solutions for some fundamental shear-driven 2-D flow fields with a moving membrane of flat and corrugated geometries.
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Natural convection in a cold enclosure with four hot inner cylinders based on diamond arrays (Part-I: Effect of horizontal and vertical equal distance of inner cylinders)
TL;DR: In this article, two-dimensional numerical simulations were conducted to investigate the natural convection heat transfer induced by a temperature difference between the hot surfaces of four inner cylinders and the walls of an enclosure.
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A collocated finite volume embedding method for simulation of flow past stationary and moving body
TL;DR: In this article, a simple and conservative numerical scheme is introduced to simulate unsteady flow around stationary and moving body, where the induced effect on the flow due to the immersed body is realized via a simple acceleration term (forcing function) derived based on the VOF value.
References
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Journal ArticleDOI
On the identification of a vortex
Jinhee Jeong,Fazle Hussain +1 more
TL;DR: In this article, the authors propose a definition of vortex in an incompressible flow in terms of the eigenvalues of the symmetric tensor, which captures the pressure minimum in a plane perpendicular to the vortex axis at high Reynolds numbers, and also accurately defines vortex cores at low Reynolds numbers.
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Application of a Fractional-Step Method to Incompressible Navier-Stokes Equations
John Kim,Parviz Moin +1 more
TL;DR: In this paper, a numerical method for computing three-dimensional, time-dependent incompressible flows is presented based on a fractional-step, or time-splitting, scheme in conjunction with the approximate-factorization technique.
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Combined Immersed-Boundary Finite-Difference Methods for Three-Dimensional Complex Flow Simulations
TL;DR: In this paper, a second-order accurate, highly efficient method is developed for simulating unsteady three-dimensional incompressible flows in complex geometries, which is achieved by using boundary body forces that allow the imposition of the boundary conditions on a given surface not coinciding with the computational grid.
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Modeling a no-slip flow boundary with an external force field
TL;DR: In this paper, the Navier-Stokes equations permit the presence of an externally imposed body force that may vary in space and time, and the velocity is used to iteratively determine the desired value.
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Oblique and Parallel Modes of Vortex Shedding in the Wake of a Circular Cylinder at Low Reynolds Numbers
TL;DR: In this article, it was shown that the Strouhal discontinuity is not due to any of the previously proposed mechanisms, but instead is caused by a transition from one oblique shedding mode to another oblique mode.