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Experimental study of moist air flow in the gap between the aircraft's fuselage and its cabin wall

Westhoff, Andreas and Claus, Wagner (2020) Experimental study of moist air flow in the gap between the aircraft's fuselage and its cabin wall. CEAS Aeronautical Journal, 11, pp. 591-607. Springer. doi: 10.1007/s13272-020-00440-3. ISSN 1869-5590.

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Official URL: https://doi.org/10.1007/s13272-020-00440-3

Abstract

We carried out an experimental study on the moisture transfer and the heat transport in warm and humid air flows between the cabin lining and the fuselage skin. The measurements were performed in a rectangular gap channel, representing the space between fuselage and cabin wall. Long-term measurements were performed for three configurations: without insulation, with fibreglass blanket and with melamine resin foam blanket. To simulate realistic flight conditions in a laboratory setup, we applied a concept of scaling. This concept is intended to guarantee similitude between the real flight conditions and the laboratory experiment. The results reveal that without insulation, the moisture transfer rate is much higher compared to the configurations with insulation blankets. With insulation most of the water evaporates during ground conditions and just a small amount is entrapped in the insulation. Without insulation just a small part of the frozen water evaporates on the ground. When comparing the two insulation blankets, it is found that they both have a similar heat transmittance coefficient. However, the condensation rate of the water and the resulting accumulation of water are significant, higher for the fibreglass blanket.

Item URL in elib:https://elib.dlr.de/134049/
Document Type:Article
Title:Experimental study of moist air flow in the gap between the aircraft's fuselage and its cabin wall
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Westhoff, AndreasAndreas.Westhoff (at) dlr.deUNSPECIFIED
Claus, Wagnerclaus.wagner (at) dlr.deUNSPECIFIED
Date:5 February 2020
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:11
DOI :10.1007/s13272-020-00440-3
Page Range:pp. 591-607
Editors:
EditorsEmailEditor's ORCID iD
UNSPECIFIEDCEASUNSPECIFIED
Publisher:Springer
ISSN:1869-5590
Status:Published
Keywords:Convective air flow, phase transition, gap flow, aircraft cabin, insulation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Antriebssystem und Energiemanagement
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Ground Vehicles
Deposited By: Westhoff, Andreas
Deposited On:20 Feb 2020 13:15
Last Modified:05 Nov 2020 22:17

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