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Comparison of different droplet measurement techniques in the Braunschweig Icing Wind Tunnel

Knop, Inken and Bansmer, Stephan E. and Hahn, Valerian and Voigt, Christiane (2020) Comparison of different droplet measurement techniques in the Braunschweig Icing Wind Tunnel. Atmospheric Measurement Techniques Discussions. Copernicus Publications. doi: 10.5194/amt-2019-494. ISSN 1867-8610.

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Official URL: http://dx.doi.org/10.5194/amt-2019-494

Abstract

The generation, transport and characterisation of supercooled droplets in multiphase wind tunnel-test facilities is of great importance for conducting icing experiments and to better understand cloud microphysical processes such as coalescence, ice nucleation, accretion and riming. To this end, a spray system has been developed, tested and calibrated in the Braunschweig Icing Wind Tunnel. Liquid droplets in the size range of 1 to 150 µm produced by pneumatic atomizers were accelerated to velocities between 10 and 40 m s-1 and supercooled to temperatures between 0 and -20 °C. Thereby, liquid water contents between 0.07 and 2.5 g m-³ were obtained in the test section. Using the different techniques, a comprehensive wind tunnel calibration for supercooled droplets was achieved, which is a prerequisite to provide well characterized liquid cloud conditions for icing tests for aerospace, wind turbines and power networks.

Item URL in elib:https://elib.dlr.de/138605/
Document Type:Article
Title:Comparison of different droplet measurement techniques in the Braunschweig Icing Wind Tunnel
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Knop, InkenUniv. BraunschweigUNSPECIFIED
Bansmer, Stephan E.Univ. BraunschweigUNSPECIFIED
Hahn, ValerianDLR, IPAUNSPECIFIED
Voigt, ChristianeDLR, IPAhttps://orcid.org/0000-0001-8925-7731
Date:2020
Journal or Publication Title:Atmospheric Measurement Techniques Discussions
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:No
In ISI Web of Science:No
DOI :10.5194/amt-2019-494
Publisher:Copernicus Publications
ISSN:1867-8610
Status:Published
Keywords:Wind tunnel, cloud particles, icing, instrumentation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics
Deposited By: Voigt, Dr.rer.nat. Christiane
Deposited On:30 Nov 2020 08:49
Last Modified:20 Jun 2021 15:54

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