Numerical simulation of reciprocating turbulent flow in a plane channel

2009 ◽  
Vol 21 (9) ◽  
pp. 095106 ◽  
Author(s):  
Massimiliano Di Liberto ◽  
Michele Ciofalo
Keyword(s):  
Numerical Simulation ◽  
Turbulent Flow ◽  
Plane Channel

Direct Numerical Simulation of Turbulent Flow Around a Rotating Circular Cylinder

2006 ◽  
Vol 129 (1) ◽  
pp. 40-47 ◽  
Author(s):  
Jong-Yeon Hwang ◽  
Kyung-Soo Yang ◽  
Klaus Bremhorst
Keyword(s):  
Numerical Simulation ◽  
Boundary Layer ◽  
Circular Cylinder ◽  
Direct Numerical Simulation ◽  
Turbulent Flow ◽  
Plane Channel ◽  
Outer Region ◽  
Wave Number ◽  
Boundary Layer Flows ◽  
Rotating Circular Cylinder

Turbulent flow around a rotating circular cylinder has numerous applications including wall shear stress and mass-transfer measurement related to the corrosion studies. It is also of interest in the context of flow over convex surfaces where standard turbulence models perform poorly. The main purpose of this paper is to elucidate the basic turbulence mechanism around a rotating cylinder at low Reynolds numbers to provide a better understanding of flow fundamentals. Direct numerical simulation (DNS) has been performed in a reference frame rotating at constant angular velocity with the cylinder. The governing equations are discretized by using a finite-volume method. As for fully developed channel, pipe, and boundary layer flows, a laminar sublayer, buffer layer, and logarithmic outer region were observed. The level of mean velocity is lower in the buffer and outer regions but the logarithmic region still has a slope equal to the inverse of the von Karman constant. Instantaneous flow visualization revealed that the turbulence length scale typically decreases as the Reynolds number increases. Wavelet analysis provided some insight into the dependence of structural characteristics on wave number. The budget of the turbulent kinetic energy was computed and found to be similar to that in plane channel flow as well as in pipe and zero pressure gradient boundary layer flows. Coriolis effects show as an equivalent production for the azimuthal and radial velocity fluctuations leading to their ratio being lowered relative to similar nonrotating boundary layer flows.

Numerical Simulation of MHD Turbulent Flow in a Rectangular Channel with Three-Surface-Coated Multi Layers

2010 ◽  
Vol 37 (5) ◽  
pp. 447-457
Author(s):  
Mitsuhiro Aoyagi ◽  
Hidetoshi Hashizume ◽  
Kazuhisa Yuki ◽  
Satoshi Ito ◽  
Takeo Muroga
Keyword(s):  
Numerical Simulation ◽  
Turbulent Flow ◽  
Rectangular Channel

NUMERICAL SIMULATION OF THE PRESSURE AND DRAG FORCES AROUND THE AHMED BODY UNDER TURBULENT FLOW

2020 ◽  
Author(s):  
Jalusa Maria da Silva Ferrari ◽  
Luciano Noleto ◽  
jhon goulart ◽  
Fábio Kayser
Keyword(s):  
Numerical Simulation ◽  
Turbulent Flow ◽  
Drag Forces ◽  
Ahmed Body

Simulation and Modeling of Turbulent Flows

1996 ◽  
Keyword(s):  
Numerical Simulation ◽  
Turbulent Flow ◽  
Turbulent Flows ◽  
Simulation And Modeling ◽  
Simulation Techniques ◽  
Rational Development ◽  
Group Methods ◽  
Turbulent Closure ◽  
The Subject ◽  
Renormalization Group Methods

This book provides students and researchers in fluid engineering with an up-to-date overview of turbulent flow research in the areas of simulation and modeling. A key element of the book is the systematic, rational development of turbulence closure models and related aspects of modern turbulent flow theory and prediction. Starting with a review of the spectral dynamics of homogenous and inhomogeneous turbulent flows, succeeding chapters deal with numerical simulation techniques, renormalization group methods and turbulent closure modeling. Each chapter is authored by recognized leaders in their respective fields, and each provides a thorough and cohesive treatment of the subject.

Numerical simulation of turbulent flow and forced heat transfer of water/CuO nanofluid inside a horizontal dimpled fin

2019 ◽  
Vol 139 (6) ◽  
pp. 3711-3724
Author(s):  
Farzad Pourfattah ◽  
Omid Ali Akbari ◽  
Vahid Jafrian ◽  
Davood Toghraie ◽  
Elnaz Pourfattah
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Turbulent Flow

scholarly journals Direct Numerical Simulation of Turbulent Flow in a Wavy Channel.

1998 ◽  
Vol 41 (2) ◽  
pp. 447-453 ◽  
Author(s):  
Takashi OHTA ◽  
Yutaka MIYAKE ◽  
Takeo KAJISHIMA
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Turbulent Flow ◽  
Wavy Channel

Numerical Simulation of the Free-Surface Turbulent Flow around a VLCC Ship Hull

2007 ◽  
Author(s):  
Adrian Lungu ◽  
Theodore E. Simos ◽  
George Psihoyios ◽  
Ch. Tsitouras
Keyword(s):  
Numerical Simulation ◽  
Free Surface ◽  
Turbulent Flow ◽  
Ship Hull
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