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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Flow structures around a butterfly-shaped low-aspect-ratio wing
TL;DR: In this paper, the authors numerically investigated three-dimensional flow structures around a butterfly-shaped low-aspect-ratio wing and their effect on the aerodynamic force at the Reynolds number of 1000 based on the wing chord length and free-stream velocity.
Journal ArticleDOI
Numerical simulations of fluid-structure interaction based on Cartesian grids with two boundary velocities
TL;DR: In this paper, the authors proposed an innovative numerical method for simulating the interaction of fluid with irregularly shaped stationary structures based on Cartesian grids, where the boundary velocities close to the immersed solid boundary can be determined in terms of the level set function and the neighboring fluid velocity.
Book ChapterDOI
Direct Numerical Simulation of Vertical Particulate Channel Flow in the Turbulent Regime
Markus Uhlmann,Alfredo Pinelli +1 more
TL;DR: In this paper, a DNS study of dilute turbulent particulate flow in a vertical plane channel was conducted, considering up to 8192 finite-size rigid particles with numerically resolved phase interfaces.
Journal ArticleDOI
Direct numerical simulation of natural convection between an enclosure and multiple circular cylinders: An influence of horizontal arrangement of cylinders
TL;DR: In this article , a three-dimensional numerical analysis of the buoyancy-driven heat transfer in an enclosure having four heated cylinders for Rayleigh number, Ra = 10 4 -10 6 , and Prandtl number, Pr = 0.7 is presented.
A simple second order cartesian scheme for compressible Euler flows in complex domains
TL;DR: In this paper, a finite-volume scheme for compressible Euler flows where the grid is cartesian and it does not fit to the body is presented, based on the definition of an ad hoc Riemann problem at solid boundaries.
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.