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Structure of Turbulence and Drag Reduction

IUTAM Symposium Zurich, Switzerland July 25–28, 1989

  • Conference proceedings
  • © 1990

Overview

Editors:
  1. Albert Gyr

    1. Institut für Hydromechanik und Wasserwirtschaft, ETH Zürich, Zürich-Hönggerberg, Schweiz

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Part of the book series: IUTAM Symposia (IUTAM)

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Table of contents (50 papers)

  1. Front Matter

    Pages I-XXVI
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  2. Structure of Turbulence

    1. Front Matter

      Pages 1-1
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    3. Experiments in wall bounded turbulence

      1. Hairpin Vortices in Turbulent Boundary Layers: The Implications for Reducing Surface Drag
        • C. R. Smith, J. D. A. Walker, A. H. Haidari, B. K. Taylor
        Pages 51-58
      2. Production of Turbulence in Boundary Layers and Potential for Modification of the near Wall Region
        • R. E. Falco, J. C. Klewicki, K. Pan
        Pages 59-68
      3. Visualisation of the Organized Motion in a Turbulent Boundary Layer
        • R. A Antonia, R. Dumas, L. Fulachier
        Pages 69-75
      4. Analysis of Experimental Data on Boundary Layer Pressure Fluctuations in Turbulent Pipe Flow
        • Harrison T. Loeser
        Pages 77-84

    4. Experiments with free shear layers

      1. Behaviour of Separation Bubble with Different Roughness Elements at the Leading Edge of a Flat Plate
        • R. S. Azad, B. Doell
        Pages 85-92
      2. Organized Structures and Transition in the Near Field of a Plane Jet
        • J. Meyer, A. Sevrain, H. C. Boisson, H. Ha Minh
        Pages 93-100
      3. Determination of Regular Structures in Turbulent Mixing Processes by Raman Scattering
        • C. Voßmerbäumer, G. Schweiger
        Pages 101-108

  3. Drag Reduction in Dilute Polymer Solutions & Injections of Concentrated Solutions

    1. Front Matter

      Pages 153-153
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    2. Dilute polmer solutions

      1. Dynamics of Dilute Polymer Solutions
        • L. Gary Leal
        Pages 155-185
      2. The Effect of Dilute Polymer Solutions on Viscous Drag and Turbulence Structure
        • William G. Tiederman
        Pages 187-200

    3. Theories of drag reduction by dilute polymer solutions

      1. Aspects of Mechanisms in Type B Drag Reduction
        • P. S. Virk, D. L. Wagger
        Pages 201-213
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About this book

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.

Editors and Affiliations

  • Institut für Hydromechanik und Wasserwirtschaft, ETH Zürich, Zürich-Hönggerberg, Schweiz

    Albert Gyr

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