Turbulent Flow Around Bluff Bodies

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Turbulent Flow Around Bluff Bodies At The Floodplain Edge

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Author : Fiona Heatlie
language : en
Publisher:
Release Date : 2010

Turbulent Flow Around Bluff Bodies At The Floodplain Edge written by Fiona Heatlie and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

This thesis examines the flow around bluff bodies placed at the floodplain edge in a compound, open channel. The floodplain edge location is associated with a strong shear layer between lower velocity floodplain flow and high velocity flow in the main channel. The drag force exerted by a bluff body is dependant on the way in which the flow separates around the body and subsequently recovers but the drag coefficients typically used to represent the effects of bluff bodies are based on experiments on bodies in geometrically simple channels. The differences induced in the wake structures and therefore in the drag coefficients of bluff bodies when they are placed in the shear layer at the floodplain edge are little understood. In this study, experimental data is gathered that allows direct comparison of the wakes of identical bluff bodies, both emergent (surface-piercing) and submerged, in simple and compound open channels. For the compound channel scenarios, for both single and multiple block arrangements, turbulence data is also reported. These results are augmented using a computational model based on the solution of the 3D Reynolds Averaged Navier Stokes equations, using a non-linear turbulence model. The results show that the changes induced in the wake structures due to their location at the floodplain edge of the compound channel can have a significant effect on the drag coefficient. For the emergent bodies, the proximity of the deep main channel flow is shown to impact in a complex manner upon the processes of reattachment and re-separation, changing the formation of vorticity in the wake. For the submerged bodies, this is complicated by asymmetry in the same processes on the block top. For both body types, separation on the main channel side results in the creation of a strong axial circulation at the floodplain edge and the decay of the wake is asymmetrically affected by the differing behaviour of the turbulence on the two sides.

Turbulent Flow Around Bluff Bodies

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Author : H.G. Regeer
language : en
Publisher:
Release Date : 1996

Turbulent Flow Around Bluff Bodies written by H.G. Regeer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.

Flow Around Bluff Bodies

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Author :
language : en
Publisher:
Release Date : 1984

Flow Around Bluff Bodies written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Aerodynamics categories.

Three Dimensional Turbulent Flow Past Rectangular Bluff Bodies

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Author : Dubravka Vasilić Melling
language : en
Publisher:
Release Date : 1977

Three Dimensional Turbulent Flow Past Rectangular Bluff Bodies written by Dubravka Vasilić Melling and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with categories.

Some Secret Measurements Of The Flow Around Bluff Bodies In Smooth And Turbulent Streams

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Author : P. W. Bearman
language : en
Publisher:
Release Date : 1972

Some Secret Measurements Of The Flow Around Bluff Bodies In Smooth And Turbulent Streams written by P. W. Bearman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with categories.

Calculation Of Separted Nonstationary Two Dimensional Turbulent Flows Around Bluff Bodies Using Reynolds Stress Closure Turbulence Modeling

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Author : Brian Richard Smith
language : en
Publisher:
Release Date : 1987

Calculation Of Separted Nonstationary Two Dimensional Turbulent Flows Around Bluff Bodies Using Reynolds Stress Closure Turbulence Modeling written by Brian Richard Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.

Twenty First Symposium On Naval Hydrodynamics

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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1997-09-11

Twenty First Symposium On Naval Hydrodynamics written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-09-11 with Science categories.

Bluff Body Aerodynamics And Its Applications

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Author : Manabu Ito
language : en
Publisher: Elsevier Publishing Company
Release Date : 1990

Bluff Body Aerodynamics And Its Applications written by Manabu Ito and has been published by Elsevier Publishing Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Technology & Engineering categories.

With the increasing slenderness and lightness of civil engineering structures such as tower blocks and bridges, wind effects on them have been attracting considerable interest from researchers and design engineers. Since most structures in civil engineering present bluff forms to the wind, the main emphasis of this collection of papers is on bluff body aerodynamics. The flow effects in this case, in addition to turbulence effects in the atmospheric boundary layer illustrate the unique and complex nature of the problems that can be encountered in this field, as opposed to the classical studies in the aeronautical field that influenced the initial development stages of industrial aerodynamics. Selected papers from the colloquium are presented in this volume. The papers offer a comprehensive presentation of the results of the studies made of wind effects on engineering structures. The latest trends in the field are outlined and the results obtained in the solution of topical problems are described.

Numerical Prediction Of Turbulent Flow And Aerodynamic Loading On Bluff Bodies

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Author : Jaeyong Chung
language : en
Publisher:
Release Date : 2005

Numerical Prediction Of Turbulent Flow And Aerodynamic Loading On Bluff Bodies written by Jaeyong Chung and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Eddies categories.

Computational And Experimental Study Of Turbulent Flow Past An Array Of Bluff Bodies Aligned Along The Channel Axis

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Author : Tong-Miin Liou
language : en
Publisher:
Release Date : 1997

Computational And Experimental Study Of Turbulent Flow Past An Array Of Bluff Bodies Aligned Along The Channel Axis written by Tong-Miin Liou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.

Presented at the ASME ASIA '97 Congress & Exhibition, Singapore, Sep 30-Oct 2, 1997.