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EXPERIMENTAL STUDY OF SHERWOOD-NUSSELT RELATION IN TURBULENT CONVECTIVE MOIST AIRFLOW WITH DROPLET CONDENSATION AS A FUNCTION OF THE SURFACE PROPERTIES

Westhoff, Andreas and Wagner, Claus (2018) EXPERIMENTAL STUDY OF SHERWOOD-NUSSELT RELATION IN TURBULENT CONVECTIVE MOIST AIRFLOW WITH DROPLET CONDENSATION AS A FUNCTION OF THE SURFACE PROPERTIES. 5th Internationnal conference on Turbulence and Interactions, 25.-29. Juni 2018, Martinique.

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Official URL: http://afm.asso.fr/

Abstract

Condensation of droplets on an overflowed cool surface is a phenomenon which occurs in our everyday life, technical applications, and nature. The heat transfer in turbulent convective flows with moist air is determined by the physical mechanisms convection, phase transition and vapour diffusion as well as by the boundary conditions such as 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. In addition, the agglomeration of the droplets and the local high density gradients further leads to an increase of turbulence in the boundary layer and this in turn results in a higher heat transfer and mass transfer due to phase change. A fundamental understanding of the impact of surface roughness and the wetting properties on the complex mutual interplay between phase transition, fluid flow and heat transfer is of vital interest.

Item URL in elib:https://elib.dlr.de/119229/
Document Type:Conference or Workshop Item (Speech)
Title:EXPERIMENTAL STUDY OF SHERWOOD-NUSSELT RELATION IN TURBULENT CONVECTIVE MOIST AIRFLOW WITH DROPLET CONDENSATION AS A FUNCTION OF THE SURFACE PROPERTIES
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Westhoff, Andreasandreas.westhoff (at) dlr.deUNSPECIFIED
Wagner, Clausclaus.wagner (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 Internationnal conference on Turbulence and Interactions
Event Location:Martinique
Event Type:international Conference
Event Dates:25.-29. Juni 2018
Organizer:ONERA
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 09:16
Last Modified:13 Jul 2018 09:16

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