Progress in Turbulence III

1. Wind Energy

   1. Measurements of the Flow Upstream a Rotating Wind Turbine Model

      • Davide Medici, Jan-Åke Dahlberg, P. Henrik Alfredsson

      Pages 87-90

   2. Is the Meandering of a Wind Turbine Wake Due to Atmospheric Length Scales?

      • Guillaume Espana, Sandrine Aubrun, Philippe Devinant

      Pages 91-94

   3. Impact of Atmospheric Turbulence on the Power Output of Wind Turbines

      • Julia Gottschall, Joachim Peinke

      Pages 95-98

   4. About First Order Geometric Auto Regressive Processes for Boundary Layer Wind Speed Simulation

      • Thomas Laubrich, Holger Kantz

      Pages 99-102

   5. Unsteady Numerical Simulation of the Turbulent Flow around a Wind Turbine

      • Markus Rütten, Julien Penneçot, Claus Wagner

      Pages 103-106

   6. A New Non-gaussian Turbulent Wind Field Generator to Estimate Design-Loads of Wind-Turbines

      • A. P. Schaffarczyk, H. Gontier, D. Kleinhans, R. Friedrich

      Pages 107-110

   7. Synthetic Turbulence Models for Wind Turbine Applications

      • D. Kleinhans, R. Friedrich, A. P. Schaffarczyk, J. Peinke

      Pages 111-114

   8. Numerical Simulation of the Flow around a Tall Finite Cylinder Using LES and PANS

      • Siniša Krajnović, Branislav Basara

      Pages 115-118

   9. Large Eddy Simulation of Turbulent Flows around a Rotor Blade Segment Using a Spectral Element Method

      • A. Shishkin, C. Wagner

      Pages 119-122

2. Modelling and Simulation and Mathematics

   1. Vorticity and Helicity in Swirling Pipe Flow

      • Frode Nygård, Helge I. Andersson

      Pages 123-126

   2. Explicit Algebraic Subgrid Models for Large Eddy Simulation

      • Linus Marstorp, Geert Brethouwer, Arne V. Johansson

      Pages 127-129

   3. Direct Numerical Simulation of a Turbulent Flow with Pressure Gradients

      • Liang Wei, Andrew Pollard

      Pages 131-134

   4. An Invariant Nonlinear Eddy Viscosity Model Based on a Consistent 4D Modelling Approach

      • Michael Frewer

      Pages 135-138

   5. A Hybrid URANS/LES Approach Used for Simulations of Turbulent Flows

      • Karel Fraňa, Jörg Stiller

      Pages 139-142

   6. Anisotropic Synthetic Turbulence with Sweeping Generated by Random Particle-Mesh Method

      • Malte Siefert, Roland Ewert

      Pages 143-146

   7. LES and Hybrid LES/RANS Study of Flow and Heat Transfer around a Wall-Bounded Short Cylinder

      • D. Borello, G. Delibra, K. Hanjalić, F. Rispoli

      Pages 147-150

   8. Stochastically Forced Laminar Plane Couette Flow: Non-normality and Hydrodynamic Fluctuations

      • George Khujadze, Martin Oberlack, George Chagelishvili

      Pages 151-154

   9. Reynolds Stress Model Based on the RDT Equations and Turbulence Dynamics in the Aerodynamic Nozzle

      • V. L. Zimont, V. A. Sabelnikov

      Pages 155-158

3. Particle Laden Flows

   1. Heat Transfer Modulation by Microparticles in Turbulent Channel Flow

      • Alfredo Soldati, Francesco Zonta, Cristian Marchioli

      Pages 159-162

   2. Particle Diffusion in Stably Stratified Flows

      • Geert Brethouwer, Erik Lindborg

      Pages 163-166

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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