In-line and Transverse Forces on Smooth and Rough Cylinders in Oscillatory Flow at High Reynolds Numbers
In-line and Transverse Forces on Smooth and Rough Cylinders in Oscillatory Flow at High Reynolds Numbers

Author: Turgut Sarpkaya

Publisher:

Published: 1986

Total Pages: 0

ISBN-13:

DOWNLOAD EBOOK

"This report presents the results of an extensive experimental investigation of the in-line and transverse forces acting on smooth, sand-roughened, and marine-roughened circular cylinders (k/D=1/50) of identical length-to-diameter ratio (L/D=2) placed in a sinusoidally oscillating flow. The drag, inertia, and the maximum force coefficients have been determined through the use of the Fourier analysis. The transverse force (lift) has been analysed in terms of its root-mean-square value. In addition, the amplitude of the first ten harmonics have been determined. The results are presented in both graphical and tabulated form in terms of the Reynolds number, Keulegan-Carpenter number, relative roughness and the frequency parameter."--Abstract.

Transverse Forces on Smooth and Rough Cylinders in Harmonic Flow at High Reynolds Numbers
Transverse Forces on Smooth and Rough Cylinders in Harmonic Flow at High Reynolds Numbers

Author: Neil Jon Collins

Publisher:

Published: 1976

Total Pages: 106

ISBN-13:

DOWNLOAD EBOOK

The transverse forces acting on smooth and sand-roughened circular cylinders immersed in an harmonically oscillating flow have been measured using a recently constructed U-shaped water tunnel. The lift coefficient and the frequency of the alternating force have been determined. For smooth cylinders, the lift coefficients were found to depend on both the Reynolds and the Keulegan-Carpenter numbers for Reynolds numbers between about 20,000 and 150,000. For rough cylinders, the lift coefficients were found to be independent of the Reynolds number within the range of relative roughnesses and Reynolds numbers tested. The results have also shown that the lift coefficients for smooth cylinders at low Reynolds numbers are nearly identical with those obtained for rough cylinders at very high Reynolds numbers at the corresponding amplitude ratios. For both rough and smooth cylinders, the transverse force is a significant fraction of the in-line force and must be taken into consideration in the design of structures. It is recommended that the experiments be extended to the self-excited hydro-elastic oscillations of cylinders in harmonic flows. (Author).

In-Line and Transverse Forces on Smooth and Rough Cylinders in Oscillatory Flow at High Reynolds Numbers
In-Line and Transverse Forces on Smooth and Rough Cylinders in Oscillatory Flow at High Reynolds Numbers

Author: Turgut Sarpkaya

Publisher: Forgotten Books

Published: 2017-11-19

Total Pages: 182

ISBN-13: 9780260614261

DOWNLOAD EBOOK

Excerpt from In-Line and Transverse Forces on Smooth and Rough Cylinders in Oscillatory Flow at High Reynolds Numbers: 4 July 1986, Interim Report for Period July 1985-July 1986 3. The drag, inertia, and the maximum force coefficients for smooth cylinders are at best a very weak function of the Reynolds number (re) for Re larger than about. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Transverse Forces on Rough Cylinders in Harmonic Flow
Transverse Forces on Rough Cylinders in Harmonic Flow

Author:

Publisher:

Published: 1977

Total Pages: 0

ISBN-13:

DOWNLOAD EBOOK

The transverse forces acting on smooth and sand-roughened circular cylinders immersed in an harmonically oscillating flow have been measured using a recently constructed U-shaped water tunnel. The lift coefficients were found to depend on Keulegan-Carpenter number but independent of the Reynolds number within the range of relative roughness and Reynolds numbers tested. The results have shown that the lift coefficients for smooth cylinders at low Reynolds numbers are nearly identical with those obtained for rough cylinders at very high Reynolds numbers at the corresponding amplitude ratios.

Hydrodynamics Around Cylindrical Structures
Hydrodynamics Around Cylindrical Structures

Author: B. Mutlu Sumer

Publisher: World Scientific

Published: 1997

Total Pages: 558

ISBN-13: 9789810230562

DOWNLOAD EBOOK

Originally published in 1977, Contact and Conflicthas remained an important book, which has inspired numerous scholars to examine further the relationships between the Indians and the Europeans -- fur traders as well as settlers. For this edition, Robin Fisher has written a new introduction in which he surveys the literature since 1977 and comments on any new insights into these relationships. Fisher contends that the fur trade had originally brought minimal cultural change to the Indians. In 1858 it essentially came to an end, and with the beginning of white settlement, there was a fundamental change in the relationship between Indians and Europeans. What had been a reciprocal system between the two civilizations became a pattern of white dominance. He shows that while the Indians had been able to adjust gradually to the changes introduced by the traders in the contact period, they lost control of their culture under the impact of colonization.

COASTAL ENGINEERING, SECOND EDITION
COASTAL ENGINEERING, SECOND EDITION

Author: MANI, J. S.

Publisher: PHI Learning Pvt. Ltd.

Published: 2018-07-01

Total Pages: 581

ISBN-13: 9387472361

DOWNLOAD EBOOK

The present edition, with new title Coastal Engineering, is the enlarged and updated volume of the book origin-ally published under the title Coastal Hydrodynamics in 2012. The book provides an overview of world population and ocean resources, natural threats and man-made hazards, and their impact on coastal environment. It discusses the fundamentals of wind, waves, tides and fluid flow and describes commonly adopted wave theories in coastal engineering. The text explains the methods for estimating wave forces on coastal structures, procedures for the analysis of wave data, and sediment transport. Apart from the estimation of beach profile evolution and shoreline change, the book discusses key aspects related to the design of different coastal structures. NEW TO THE SECOND EDITION • Includes two new chapters on Beach Profile and Shoreline Evolution and Design of Breakwaters and Coastal Protective Structures • Colour photographs are appended at the end of the book KEY FEATURES • Worked-out examples will benefit the reader to understand and solve variety of coastal engineering problems. • Exercises given at the end of each chapter would benefit the reader to get exposed to a variety of practical problems related to coastal engineering. TARGET AUDIENCE • B.Tech./M.Tech. (Ocean Engineering/ Marine Engineering)

Hydrodynamics Around Cylindrical Strucures
Hydrodynamics Around Cylindrical Strucures

Author: B. Mutlu Sumer

Publisher: World Scientific

Published: 2006

Total Pages: 550

ISBN-13: 9812772774

DOWNLOAD EBOOK

This book discusses the subject of wave/current flow around a cylinder, the forces induced on the cylinder by the flow, and the vibration pattern of slender structures in a marine environment. The primary aim of the book is to describe the flow pattern and the resulting load which develops when waves or current meet a cylinder. Special attention is paid to circular cylinder. The development in the forces is related to the various flow patterns and is discussed in detail. Regular as well as irregular waves are considered, and special cases like wall proximities (pipelines) are also investigated. Sample Chapter(s). Chapter 1: Flow around a cylinder in steady current (1,262 KB). Contents: Flow Around a Cylinder in Steady Current; Forces on a Cylinder in Steady Current; Flow Around a Cylinder in Oscillatory Flows; Forces on a Cylinder in Regular Waves; Mathematical and Numerical Treatment of Flow Around a Cylinder; Diffraction Effect. Forces on Large Bodies; Forces on a Cylinder in Irregular Waves; Flow-Induced Vibrations of a Free Cylinder in Steady Currents; Flow-Induced Vibrations of a Free Cylinder in Waves; Vibrations of Marine Pipelines; Mathematical Modelling of Flow-Induced Vibrations. Readership: PhD and MSc students with some experience in basic fluid mechanics, and consulting companies in the areas of marine, offshore, coastal and civil engineering.