Progress in Turbulence VII
Proceedings of the iTi Conference in Turbulence 2016
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Article
Open AccessCorrection to: Measurements in a Turbulent Channel Flow by Means of an LDV Profile Sensor
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Article
Open AccessMeasurements in a Turbulent Channel Flow by Means of an LDV Profile Sensor
Spatially and temporally resolved velocity measurements in wall-bounded turbulent flows remain a challenge. Contrary to classical laser Doppler velocimetry (LDV) measurements, the laser Doppler velocity profil...
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Article
Open AccessAppraisal of cavity hot-wire probes for wall-shear-stress measurements
Flush-mounted cavity hot-wire probes have emerged as an alternative to classical hot-wire probes mounted several diameters above the surface for wall-shear stress measurements. They aim at increasing the frequ...
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Article
Correction to: Techniques for Turbulence Trip** of Boundary Layers in RANS Simulations
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Article
Open AccessSpatial resolution issues in rough wall turbulence
The question whether spatial resolution effects should be accounted for when performing hot-wire (or particle image velocimetry) measurements in turbulent wall-bounded flows over rough surfaces in the fully ro...
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Article
Open AccessTechniques for Turbulence Trip** of Boundary Layers in RANS Simulations
The exact placement of the laminar–turbulent transition has a significant effect on relevant characteristics of the boundary layer and aerodynamics, such as drag, heat transfer and flow separation on e.g. wings a...
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Article
Open AccessRidge-type roughness: from turbulent channel flow to internal combustion engine
While existing engineering tools enable us to predict how homogeneous surface roughness alters drag and heat transfer of near-wall turbulent flows to a certain extent, these tools cannot be reliably applied fo...
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Chapter and Conference Paper
The Diagnostic Plot—A Tutorial with a Ten Year Perspective
The diagnostic plot was introduced in 2010 (Eur. J. Mech. B/Fluids 29: 403–406) but was used already in 2008 during a large measurement campaign as a litmus test to determine if tripped zero-pressure gradient ...
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Chapter and Conference Paper
Large-Scale Energy in Turbulent Boundary Layers: Reynolds-Number and Pressure-Gradient Effects
Adverse-pressure-gradient (APG) turbulent boundary layers (TBLs) are studied using hot- measurements which cover a Clauser pressure-gradient-parameter range up to \(\beta \approx 2.4\) . and non-constant
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Chapter and Conference Paper
Assessment of Wall Vibrations in the Long Pipe Facility at CICLoPE
The present investigation aims at finding out whether there are pipe vibrations in the higher Reynolds number range at the Long Pipe Facility at CICLoPE facility and to quantify their and frequency. Since ...
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Article
Open AccessPlasma Streamwise Vortex Generators for Flow Separation Control on Trucks
An experimental study of the effect of Dielectric Barrier Discharge plasma actuators on the flow separation on the A-pillar of a modern truck under cross-wind conditions has been carried out. The experiments w...
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Article
Open AccessLarge-Eddy BreakUp Devices – a 40 Years Perspective from a Stockholm Horizon
In the beginning of the 1980’s Large Eddy BreakUp (LEBU) devices, thin plates or airfoils mounted in the outer part of turbulent boundary layers, were shown to be able to change the turbulent structure and int...
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Article
Influence of a Large-Eddy-Breakup-Device on the Turbulent Interface of Boundary Layers
The effects of implementing a large-eddy break-up device (LEBU) in a turbulent boundary layer on the interaction with the boundary layer is investigated with particular emphasis on the turbulent/non-turbulent ...
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Article
Open AccessRevisiting History Effects in Adverse-Pressure-Gradient Turbulent Boundary Layers
The goal of this study is to present a first step towards establishing criteria aimed at assessing whether a particular adverse-pressure-gradient (APG) turbulent boundary layer (TBL) can be considered well-behave...
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Article
Open AccessAdverse-Pressure-Gradient Effects on Turbulent Boundary Layers: Statistics and Flow-Field Organization
This manuscripts presents a study on adverse-pressure-gradient turbulent boundary layers under different Reynolds-number and pressure-gradient conditions. In this work we performed Particle Image Velocimetry (...
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Article
Simulation of a Large-Eddy-Break-up Device (LEBU) in a Moderate Reynolds Number Turbulent Boundary Layer
A well-resolved large eddy simulation (LES) of a large-eddy break-up (LEBU) device in a spatially evolving turbulent boundary layer is performed with, Reynolds number, based on free-stream velocity and momentu...
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Book and Conference Proceedings
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Chapter and Conference Paper
Identifying Well-Behaved Turbulent Boundary Layers
This paper presents a study focused on the development of zero-pressure-gradient turbulent boundary layers (ZPG TBL) towards well-behaved conditions in the low Reynolds-number range. A new method to assess the le...
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Chapter and Conference Paper
Transitional and Turbulent Bent Pipes
We review a number of aspects of the transitional and turbulent flow in bent pipes, obtained at KTH using the spectral-element code Nek5000. This flow, sometimes also called Dean flow, is characterised by the ...
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Chapter and Conference Paper
Scaling of Adverse-Pressure-Gradient Turbulent Boundary Layers in Near-Equilibrium Conditions
Well-resolved large-eddy simulations are used to study adverse-pressure-gradient (APG) turbulent boundary layers (TBLs) under near-equilibrium conditions. In particular, we focus on two near-equilibrium cases ...
