Viscous Drag Reduction in Boundary Layers

Viscous Drag Reduction in Boundary Layers PDF Author:
Publisher: AIAA
ISBN: 9781600863783
Category : Boundary layer
Languages : en
Pages : 542

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Book Description

Viscous Drag Reduction in Boundary Layers

Viscous Drag Reduction in Boundary Layers PDF Author:
Publisher: AIAA
ISBN: 9781600863783
Category : Boundary layer
Languages : en
Pages : 542

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Book Description


Structure of Turbulence and Drag Reduction

Structure of Turbulence and Drag Reduction PDF Author: Albert Gyr
Publisher: Springer Science & Business Media
ISBN: 3642509711
Category : Science
Languages : en
Pages : 617

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Book Description
In 1976 a similar titled IUTAM Symposium (Structure of Turbulence and Drag Reduction) was held in Washington . However, the progress made during the last thirteen years as weil as the much promising current research desired a second one this year. In Washington drag reduction by additives and by direct manipulation of the walls (compliant walls and heated surfaces) were discussed. In the meantime it became evident that drag reduction also occurs when turbulence is influenced by geometrical means, e.g. by influencing the pressure distribution by the shape of the body (airfoils) or by the introduction of streamwise perturbances on a body (riblets). In the recent years turbulence research has seen increasing attention being focused on the investigation of coherent structures, mainly in Newtonian fluids. We all know that these structures are a significant feature of turbulent flows, playing an important role in the energy balance in such flows. However their place in turbulence theories as weil as the factors influencing their development are still poorly understood. Consequently, the investigation of phenomena in which the properties of coherent structures are alte red provides a promising means of improving our understanding of turbulent flows in general.

Boundary-Layer Theory

Boundary-Layer Theory PDF Author: Hermann Schlichting (Deceased)
Publisher: Springer
ISBN: 366252919X
Category : Technology & Engineering
Languages : en
Pages : 814

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Book Description
This new edition of the near-legendary textbook by Schlichting and revised by Gersten presents a comprehensive overview of boundary-layer theory and its application to all areas of fluid mechanics, with particular emphasis on the flow past bodies (e.g. aircraft aerodynamics). The new edition features an updated reference list and over 100 additional changes throughout the book, reflecting the latest advances on the subject.

Turbulence Structure and Modulation

Turbulence Structure and Modulation PDF Author: Alfredo Soldati
Publisher: Springer
ISBN: 370912574X
Category : Technology & Engineering
Languages : en
Pages : 319

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Book Description
Controlling turbulence is an important issue for a number of technological applications. Several methods to modulate turbulence are currently being investigated. This book describes various aspects of turbulence structure and modulation, and explains and discusses the most promising techniques in detail.

Changes in the Turbulent Boundary Layer Structure Associated with Net Drag Reduction by Outer Layer Manipulators

Changes in the Turbulent Boundary Layer Structure Associated with Net Drag Reduction by Outer Layer Manipulators PDF Author: Nasser Rashidnia
Publisher:
ISBN:
Category : Drag (Aerodynamics)
Languages : en
Pages : 520

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Book Description


Non-Newtonian Flow

Non-Newtonian Flow PDF Author: R. P. Chhabra
Publisher: Elsevier
ISBN: 0080512836
Category : Technology & Engineering
Languages : en
Pages : 453

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Book Description
Non-Newtonian materials are encountered in virtually all of the chemical and process industries and a full understanding of their nature and flow characteristics is an essential requirement for engineers and scientists involved in their formulation and handling. This book will bridge the gap between much of the highly theoretical and mathematically complex work of the rheologist and the practical needs of those who have to design and operate plants in which these materials are handled and processed. At the same time, numerous references are included for the benefit of those who need to delve more deeply into the subject.The starting point for any work on non-newtonian fluids is their characterisation over the range of conditions to which they are likely to be subjected during manufacture or utilisation, and this topic is treated early on in the book in a chapter commissioned from an expert in the field of rheological measurements. Coverage of topics is extensive and this book offers a unique and rich selection of material including the flow of single phase and multiphase mixtures in pipes, in packed and fluidised bed systems, heat and mass transfer in boundary layers and in simple duct flows, and mixing etc.An important and novel feature of the book is the inclusion of a wide selection of worked examples to illustrate the methods of calculation. It also incorporates a large selection of problems for the reader to tackle himself.

Flow Control Techniques and Applications

Flow Control Techniques and Applications PDF Author: Jinjun Wang
Publisher: Cambridge University Press
ISBN: 1107161568
Category : Science
Languages : en
Pages : 293

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Book Description
Master the theory, applications and control mechanisms of flow control techniques.

Turbulent Boundary Layer Drag Reduction on an Axisymmetric Body Using Circular Ring Manipulators

Turbulent Boundary Layer Drag Reduction on an Axisymmetric Body Using Circular Ring Manipulators PDF Author: Kamal Poddar
Publisher:
ISBN:
Category : Boundary layer control
Languages : en
Pages : 362

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Book Description


Self-sustaining Mechanisms of Wall Turbulence

Self-sustaining Mechanisms of Wall Turbulence PDF Author: Ronald Lee Panton
Publisher: Computational Mechanics
ISBN:
Category : Science
Languages : en
Pages : 448

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Book Description
Why is wall turbulence self-sustaining? In this book well-regarded researchers not only discuss what they know and believe, but also speculate on ideas that still require numerical or experimental testing and verification. An initial brief history of boundary layer structure research is followed by chapters on experimental information and specific topics within the subject. There are then sections on computational aspects.

Turbulent Shear Flows I

Turbulent Shear Flows I PDF Author: F. Durst
Publisher: Springer Science & Business Media
ISBN: 3642463959
Category : Technology & Engineering
Languages : en
Pages : 415

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Book Description
The present book contains papers that have been selected from contributions to the First International Symposium on Turbulent Shear Flows which was held from the 18th to 20th April 1977 at The Pennsylvania State University, University Park, Pennsylvania, USA. Attend ees from close to 20 countries presented over 100 contributions at this meeting in which many aspects of the current activities in turbulence research were covered. Five topics received particular attention at the Symposium: Free Flows Wall Flows Recirculating Flows Developments in Reynolds Stress Closures New Directions in Modeling This is also reflected in the five chapters of this book with contributions from research workers from different countries. Each chapter covers the most valuable contributions of the conference to the particular chapter topic. Of course, there were many additional good con tributions to each subject at the meeting but the limitation imposed on the length of this volume required that a selection be made. The realization of the First International Symposium on Turbulent Shear Flows was p- sible by the general support of: U. S. Army Research Office U. S. Navy Research Office Continuing Education Center of The Pennsylvania State University The conference organization was carried out by the organizing committee consisting of: F. Durst, Universitat Karlsruhe, Karlsruhe, Fed. Rep. of Germany V. W. Goldschmidt, Purdue University, West Lafayette, Ind. , USA B. E. Launder, University of California, Davis, Calif. , USA F. W. Schmidt, Pennsylvania State University, University Park, Penna.