Structure of Turbulence and Drag Reduction

IUTAM Symposium Zurich, Switzerland July 25–28, 1989

  • Albert Gyr

Table of contents

  1. Front Matter
    Pages I-XXVI
  2. Structure of Turbulence

    1. Front Matter
      Pages 1-1
    2. Reviews

    3. Experiments in wall bounded turbulence

    4. Experiments with free shear layers

    5. Theories of structures of turbulence

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

    1. Front Matter
      Pages 153-153
    2. Dilute polmer solutions

    3. Theories of drag reduction by dilute polymer solutions

      1. P. S. Virk, D. L. Wagger
        Pages 201-213

About these proceedings

Introduction

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.

Keywords

Additiv Drag Reduction Druckverlust Riblet Stability Stabilität Turbulence Turbulenz development polymere Lösungen

Editors and affiliations

  • Albert Gyr
    • 1
  1. 1.Institut für Hydromechanik und WasserwirtschaftETH ZürichZürich-HönggerbergSchweiz

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-642-50971-1
  • Copyright Information Springer-Verlag Berlin Heidelberg 1990
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Springer Book Archive
  • Print ISBN 978-3-642-50973-5
  • Online ISBN 978-3-642-50971-1
  • About this book