Experimental Study Of Three Dimensional Offset Jets And Wall Jets

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Experimental Study Of Three Dimensional Offset Jets And Wall Jets

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Author : Martin Agelin-Chaab
language : en
Publisher:
Release Date : 2013

Experimental Study Of Three Dimensional Offset Jets And Wall Jets written by Martin Agelin-Chaab and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

Experimental Study Of Three Dimensional Turbulent Offset Jets And Wall Jets

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Author : Martin Agelin-Chaab
language : en
Publisher:
Release Date : 2011

Experimental Study Of Three Dimensional Turbulent Offset Jets And Wall Jets written by Martin Agelin-Chaab and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

Turbulence kinetic energy -- particle image velocimetry -- proper orthogonal decomposition -- two-point velocity correlations -- triple velocity products -- harpin vortex -- turbulenc production.

An Experimental Study Of Three Dimensional Wall Jets

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Author : V. P. Maslov
language : en
Publisher:
Release Date : 2001

An Experimental Study Of Three Dimensional Wall Jets written by V. P. Maslov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

Experimental Study Of Tailwater Level And Asymmetry Ratio Effects On Three Dimensional Offset Jets

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Author : Zacharie Durand
language : en
Publisher:
Release Date : 2014

Experimental Study Of Tailwater Level And Asymmetry Ratio Effects On Three Dimensional Offset Jets written by Zacharie Durand and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.

Supercritical fluid jets provide a complex flow pattern and are present in many engineering applications. To date, studies have focused on wall jets, free jets, and two-dimensional offset jets. As a result, our understanding of three-dimensional offset jets is lacking. A deeper understanding of three-dimensional offset jets is important as they are seen in many engineering applications. Understanding the flow patterns of three-dimensional offset jets will aid hydraulic engineers to reduce anthropogenic effects when designing new and rehabilitating older hydraulic structures. The purpose of this study was to evaluate the effects of tailwater level and asymmetry ratio on three-dimensional offset jets. A physical model was constructed and three sets of experiments were conducted. Each set of experiments evaluated the effects of the Reynolds number, tailwater level, or asymmetry ratio. Velocity measurements were taken with an acoustic Doppler velocimeter. The acoustic Doppler velocimeter measured all three components of velocity which allowed the calculation of all six components of Reynolds shear stresses and ten components of triple velocity correlation. The effects of Reynolds number, tailwater level, and asymmetry ratio on streamwise flow development, distributions of mean velocities, and distribution of turbulence statistics were evaluated. Reynolds number effects were found to be insignificant at Reynolds number greater than 53,000. Two different trends were observed in the behavior of three-dimensional offset jets at different tailwater levels. At low tailwater levels the jet will not reattach to the channel bottom as it does at higher tailwater levels. Increasing the asymmetry ratio of an offset jet will make the jet curve towards the channel wall and bottom faster. Once reattached to the wall the velocity decay rate is greatly reduced. The results found in this study will be useful to a hydraulic engineer designing new or rehabilitating older hydraulic structures which have flow characteristics similar to that of three-dimensional offset jets. The data acquired during this study adds to the available data usable for calibration and validation of turbulence models. All three components of velocity were measured simultaneously which allowed to calculation of the six Reynolds shear stresses and ten triple velocity correlation terms. All velocities and turbulence statistics in this study were measured simultaneously which provides a data set that has rarely been seen before.

An Experimental Study Of Two Dimensional And Three Dimensional Curved Wall Jets

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Author : Rodney Brewer Rask
language : en
Publisher:
Release Date : 1973

An Experimental Study Of Two Dimensional And Three Dimensional Curved Wall Jets written by Rodney Brewer Rask and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with categories.

An Experimental Investigation Of A Three Dimensional Wall Jet

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Author : George Dominic Catalano
language : en
Publisher:
Release Date : 1977

An Experimental Investigation Of A Three Dimensional Wall Jet written by George Dominic Catalano and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Jets categories.

Experimental Investigation On The Flow Characteristics Of Three Dimensional Turbulent Offset Jets

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Author : Baafour Nyantekyi-Kwakye
language : en
Publisher:
Release Date : 2015

Experimental Investigation On The Flow Characteristics Of Three Dimensional Turbulent Offset Jets written by Baafour Nyantekyi-Kwakye and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.

An experimental study was designed to investigate the effect of different parameters on the development and structure of turbulent 3D offset jets. The present investigation considered the effects of offset height ratio, expansion ratio, surface roughness and rib placement on the flow dynamics of a turbulent 3D offset jet. The velocity measurements were performed using an acoustic Doppler velocimetry (ADV) and particle image velocimetry (PIV). Measurements were conducted within the symmetry and lateral planes. For the PIV technique, the measurements in the symmetry and lateral planes were conducted over a streamwise range of 0 ≤ x/bo ≤ 80 and 12 ≤ x/bo ≤ 60, respectively (where bo is the nozzle height). Likewise, velocity measurements using the ADV technique were conducted over a range of 4 ≤ x/bo ≤ 45 in both the symmetry and lateral planes. The velocity measurements were analyzed using both one-point and multi-point statistics. The one-point statistics included profiles of the mean velocities, Reynolds stresses and some of the budget terms in the turbulent kinetic energy transport equation. The quadrant analysis technique was used to investigate the dominant events that contribute towards the Reynolds shear stress. The two-point correlation analysis was used to investigate how the turbulence quantities are correlated. Information obtained from the two-point correlation analysis was also used to investigate the inclination of vortical structures within the inner and outer shear layers of the 3D offset jet. The direction of the positive mean shear gradient played an active role in the inclination of these vortical structures within the inner and outer shear layers. The reattachment process resulted in the breakdown of these structures within the developing region. Similarly, various length scales were estimated from these structures. The proper orthogonal decomposition was used to examine the distribution of the turbulent kinetic energy within the offset jet flow. Also, the dynamic role of the large scale structures towards the turbulent intensities, turbulent kinetic energy and Reynolds shear stress was investigated.

An Experimental Investigation Of Three Dimensional Curved Wall Jets

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Author : Uday M. Patankar
language : en
Publisher:
Release Date : 1970

An Experimental Investigation Of Three Dimensional Curved Wall Jets written by Uday M. Patankar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.

Experimental Study Of Three Dimensional Turbulent Jet Solid Boundary Interaction

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Author : Christos D. Tsitouras
language : en
Publisher:
Release Date : 1987

Experimental Study Of Three Dimensional Turbulent Jet Solid Boundary Interaction written by Christos D. Tsitouras and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Air jets categories.

Proceedings Of The Canadian Society Of Civil Engineering Annual Conference 2021

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Author : Scott Walbridge
language : en
Publisher: Springer Nature
Release Date : 2022-06-02

Proceedings Of The Canadian Society Of Civil Engineering Annual Conference 2021 written by Scott Walbridge and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-02 with Technology & Engineering categories.

This book comprises the proceedings of the Annual Conference of the Canadian Society of Civil Engineering 2021. The contents of this volume focus on specialty conferences in construction, environmental, hydrotechnical, materials, structures, transportation engineering, etc. This volume will prove a valuable resource for those in academia and industry.