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Large scale volumetric flow measurement on a turbulent boundary layer

Schanz, Daniel and Geisler, Reinhard and Voß, Christina and Novara, Matteo and Jahn, Tobias and Dierksheide, Uwe and Schröder, Andreas (2018) Large scale volumetric flow measurement on a turbulent boundary layer. In: 18th International Symposium on Flow Visualization 2018 (3.2.1), pp. 84-88. 18th International Symposium on Flow Visualization, June 26-29, 2018, Zurich, Switzerland.

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Official URL: http://www.isfv18.ethz.ch/programme.html

Abstract

The aim of this work is to capture the spatiotemporal dynamics of large-scale flow structures in a turbulent boundary layer flow in a volumetric and time-resolved way. The applied means are dense Lagrangian Particle Tracking of Helium-Filled Soap Bubbles (HFSBs) using the Shake-The-Box (STB) algorithm and a subsequent interpolation to a regular grid using the physically regularized FlowFit method. The presented experiment was performed as a pre-test to a full campaign to be held in August 2018 at the Atmospheric wind tunnel at the University of the armed forces in Munich, Germany. This test demonstrates the principle applicability of the measurement techniques to a low-speed wind tunnel environment and shows that high spatial accuracy and resolution can be reached despite of a large measurement volume. Problems were encountered achieving a homogeneous bubble distribution and in deploying large amounts of bubbles, while not disturbing the flow.

Item URL in elib:https://elib.dlr.de/122182/
Document Type:Conference or Workshop Item (Speech)
Title:Large scale volumetric flow measurement on a turbulent boundary layer
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schanz, Danieldaniel.schanz (at) dlr.deUNSPECIFIED
Geisler, Reinhardreinhard.geisler (at) dlr.deUNSPECIFIED
Voß, Christinachristina.voss (at) dlr.deUNSPECIFIED
Novara, Matteomatteo.novara (at) dlr.deUNSPECIFIED
Jahn, Tobiastobias.jahn (at) dlr.deUNSPECIFIED
Dierksheide, UweUDierksheide (at) lavision.deUNSPECIFIED
Schröder, Andreasandreas.schroeder (at) dlr.dehttps://orcid.org/0000-0002-6971-9262
Date:2018
Journal or Publication Title:18th International Symposium on Flow Visualization 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 84-88
Series Name:Book of Abstract
Status:Published
Keywords:turbulent boundary layer, superstructures, flow visualization, Lagrangian Particle Tracking, data assimilation
Event Title:18th International Symposium on Flow Visualization
Event Location:Zurich, Switzerland
Event Type:international Conference
Event Dates:June 26-29, 2018
Institution:Deutsches Zentrum für Luft- und Raumfahrt e.V.
Department:AS-EXV
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO
Deposited By: Micknaus, Ilka
Deposited On:10 Jan 2019 14:54
Last Modified:10 Jan 2019 14:54

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