High-Order Finite-Difference Method for Incompressible Flows Using Collocated Grid System
TLDR
In this paper, a higher-order finite difference method (FDM) has been developed for the body-fitted coordinate system and the consistency and the conservatior property of FDMs are discussed for the collocated grid.Abstract:
To apply the direct numerical simulation (DNS) and the large-eddy simulation (LES) of turbulence to flow fields of complicated geometry, a higher-order finite difference method (FDM) has been developed for the body-fitted coordinate system The consistency and the conservat ior property of FDMs are discussed for the collocated grid As numerical examples, DNS results of decaying isotropic turbulence and DNS/LES results for plane channel flow are shown and the influence of variable arrangement is examined The results by the consistent 'interpolation' method for gradient form on the collocated grid agree well with those by other proper FDMs and the spectral methodread more
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Turbulence Structure of Particle-Laden Flow in a Vertical Plane Channel Due to Vortex Shedding
TL;DR: In this article, a finite-difference scheme was developed to resolve the flow around each particle moving in turbulence, and the accuracy was confirmed up to the Reynolds number range with vortex shedding.
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Numerical investigation on flow around circular cylinders in tandem arrangement at a subcritical Reynolds number
T. Kitagawa,H. Ohta +1 more
TL;DR: In this article, three-dimensional fluid computations have been performed to investigate the flows around two circular cylinders in tandem arrangements at a subcritical Reynolds number, Re=2.2×104.
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Comparison between laminar and turbulent heat transfer in a stationary square duct with transverse or angled rib turbulators
Akira Murata,Sadanari Mochizuki +1 more
TL;DR: In this paper, a rib-roughened duct was numerically simulated by using the second-order finite difference method in coordinates fitted to transverse or angled ribs and the results showed that the higher momentum fluid of the turbulent case was more disturbed by the ribs as compared to the laminar case.
Journal ArticleDOI
Effect of centrifugal buoyancy on turbulent heat transfer in an orthogonally rotating square duct with transverse or angled rib turbulators
Akira Murata,Sadanari Mochizuki +1 more
TL;DR: In this paper, the effect of the Coriolis and buoyancy forces on the turbulent heat transfer disturbed by rib turbulators was numerically investigated by using the large eddy simulation (LES).
A Numerical Study of Open Channel Flow Hydrodynamics and Turbulence of the Tidal Bore and Dam-Break Flows
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TL;DR: In this paper, a numerical model was developed based upon the Cubic-Interpolated Pseudo-particle (CIP) Combined Unified Procedure (C-CUP) method equipped with a Large Eddy Simulation (LES) model and a re-initialisation method.
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