Progress in Turbulence III

1. Front Matter

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2. Turbulence

   1. Fully Developed Turbulence with Diminishing Mean Vortex Stretching and Reduced Intermittency

      • R. E. E. Seoud, J. C. Vassilicos

      Pages 1-8

   2. Spectral and Physical Forcing of Turbulence

      • Zafer Zeren, Benoît Bédat

      Pages 9-12

   3. Fractal-Generated Turbulent Scaling Laws from a New Scaling Group of the Multi-Point Correlation Equation

      • Martin Oberlack, George Khujadze

      Pages 13-19

   4. Investigation of the Conditional Scalar Dissipation Rate Across a Shear Layer Using Gradient Trajectories

      • Juan Pedro Mellado, Lipo Wang, Norbert Peters

      Pages 21-24

   5. ‘Rational’ Turbulence Models?

      • Robert Rubinstein, Stephen L. Woodruff

      Pages 25-28

   6. An Approximation of the Invariant Measure for the Stochastic Navier-Stokes

      • Björn Birnir

      Pages 29-32

   7. Spatial Multi-Point Correlations in Inhomogeneous Turbulence

      • R. Stresing, M. Tutkun, J. Peinke

      Pages 33-36

   8. Statistical Properties of Velocity Increments in Two-Dimensional Turbulence

      • Michel Voßkuhle, Oliver Kamps, Michael Wilczek, Rudolf Friedrich

      Pages 37-40

   9. Enstrophy Transfers Study in Two-Dimensional Turbulence

      • Patrick Fischer, Charles-Henri Bruneau

      Pages 41-44

   10. Two Point Velocity Difference Scaling along Scalar Gradient Trajectories in Turbulence

       • Lipo Wang

       Pages 45-48

   11. Stochastic Analysis of Turbulence n-Scale Correlations in Regular and Fractal-Generated Turbulence

       • R. Stresing, J. Peinke, R. E. Seoud, J. C. Vassilicos

       Pages 49-52

3. Experimental Methods

   1. Holographic PIV with Low Coherent Light – Recent Progress in 3D Flow Measurements

      • Gerd Gülker, Christian Steigerwald, Klaus D. Hinsch

      Pages 53-56

   2. An Experimental Demonstration of Accelerated Tomo-PIV

      • N. A. Worth, T. B. Nickels

      Pages 57-60

   3. Using the 2D Laser-Cantilever-Anemometer for Two-Dimensional Measurements in Turbulent Flows

      • Michael Hölling, Joachim Peinke

      Pages 61-64

   4. 3D Structures from Stereoscopic PIV Measurements in a Turbulent Boundary Layer

      • David J. C. Dennis, Timothy B. Nickels

      Pages 65-68

   5. The Sphere Anemometer – A Fast Alternative to Cup Anemometry

      • Hendrik Heißelmann, Michael Hölling, Joachim Peinke

      Pages 69-72

   6. CICLoPE – A Large Pipe Facility for Detailed Turbulence Measurements at High Reynolds Number

      • J. -D. Rüedi, A. Talamelli, H. M. Nagib, P. H. Alfredsson, P. A. Monkewitz

      Pages 73-77

4. Wind Energy

   1. Aerodynamics of an Airfoil at Ultra-Low Reynolds Number

      • Md. Mahbub Alam, Y. Zhou, H. Yang

      Pages 79-82

   2. Turbulence Energetics in Stably Stratified Atmospheric Flows

      • S. S. Zilitinkevich, T. Elperin, N. Kleeorin, V. L’vov, I. Rogachevskii

      Pages 83-86

This third issue on “progress in turbulence” is based on the third ITI conference (ITI interdisciplinary turbulence initiative), which took place in Bertinoro, North Italy. Researchers from the engineering and physical sciences gathered to present latest results on the rather notorious difficult and essentially unsolved problem of turbulence. This challenge is driving us in doing basic as well as applied research. Clear progress can be seen from these contributions in different aspects. New - phisticated methods achieve more and more insights into the underlying compl- ity of turbulence. The increasing power of computational methods allows studying flows in more details. Increasing demands of high precision large turbulence - periments become aware. In further applications turbulence seem to play a central issue. As such a new field this time the impact of turbulence on the wind energy conversion process has been chosen. Beside all progress our ability to numerically calculate high Reynolds number turbulent flows from Navier-Stokes equations at high precision, say the drag co- ficient of an airfoil below one percent, is rather limited, not to speak of our lack of knowledge to compute this analytically from first principles. This is rather - markable since the fundamental equations of fluid flow, the Navier-Stokes eq- tions, have been known for more than 150 years.

• Large Eddy Simulation
• RSI
• Turbulence
• Turbulent Flow
• Turbulent Transport
• Wind Energy
• convection
• modeling
• simulation
• fluid- and aerodynamics
• partial differential equations

• Faculty of Physics, Turbulence, Win d Energy , and Stochastic s (TWiSt), Carl v. Ossietzky University, Oldenburg, Germany

  Joachim Peinke

• Fachgebiet für Strömungsdynamik, Fachbereich Maschinenbau, Darmstadt, Germany

  Martin Oberlack

• Department of Mechanical, Nuclear Constructions, Aeronautics and of Metallurgy, University of Bologna, Bologna, Italy

  Alessandro Talamelli

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