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Experimental study of heat and mass transfer in convective flows of moist air with droplet condensation in function of surface roughness and wetting properties

Westhoff, Andreas (2018) Experimental study of heat and mass transfer in convective flows of moist air with droplet condensation in function of surface roughness and wetting properties. 5th International Conference on Experimental Fluid Mechanics, 2.-4. Juli, München.

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Abstract

Condensation and evaporation of droplets on an overflowed cool surfaces is a phenomenon which occurs in our everyday life, many technical applications and nature. For instance we well know the effect of misted windscreens in cars or the droplet condensation on the surface of heat exchangers. The heat transfer in convective flows with moist air is determined by the physical mechanisms convection, phase transition and vapour diffusion as well as the boundary conditions surface roughness and the contact angle between the droplets and the surface. Moreover, during the phase change latent heat is released or consumed, which in turn influences the heat transfer. The aim of the present study is to determine the impact of surface roughness and droplet’s contact angle on the mass transfer due to phase transition in mixed convective air flows.

Item URL in elib:https://elib.dlr.de/119233/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental study of heat and mass transfer in convective flows of moist air with droplet condensation in function of surface roughness and wetting properties
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Westhoff, Andreasandreas.westhoff (at) dlr.deUNSPECIFIED
Date:2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:moist air flow, convection, condensation, evaporation, heat transfer, mass flow, phase transition
Event Title:5th International Conference on Experimental Fluid Mechanics
Event Location:München
Event Type:international Conference
Event Dates:2.-4. Juli
Organizer:Universität der Bundeswehr
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC-Energiemanagement (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Fluid Systems, GO
Deposited By: Westhoff, Andreas
Deposited On:13 Jul 2018 09:32
Last Modified:13 Jul 2018 09:32

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