Convective heat transfer on leeward building walls in an urban environment: Measurements in an outdoor scale model

Convection over the building envelope is a critical determinant of building cooling load, but parameterization of convection in building energy models and urban computational fluid dynamics models is challenging. An experimental investigation intended to clarify the heat transfer mechanism of a conv...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2011-07, Vol.54 (15), p.3128-3138
Main Authors: Nottrott, A., Onomura, S., Inagaki, A., Kanda, M., Kleissl, J.
Format: Article
Language:English
Subjects:
Applied sciences
Boundary layer
Buildings. Public works
Climatology and bioclimatics for buildings
Computational fluid dynamics
Convection
Convection cooling
Convection, turbulence, diffusion. Boundary layer structure and dynamics
Earth, ocean, space
Exact sciences and technology
External geophysics
Fluid flow
Heat transfer
Mathematical models
Meteorology
Parametrization
Sensible heat flux
Turbulence
Turbulent flow
Urban
Vertical wall
Wall function
Walls
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Summary:Convection over the building envelope is a critical determinant of building cooling load, but parameterization of convection in building energy models and urban computational fluid dynamics models is challenging. An experimental investigation intended to clarify the heat transfer mechanism of a convective wall boundary layer (WBL) on a leeward, vertical building wall was conducted at the Comprehensive Outdoor Scale Model (COSMO) facility for urban atmospheric research. Comparison of mean and turbulent temperature fluctuation intensity profiles showed that the dominant regime of the WBL flow was turbulent natural convection. Implications for parameterization of convective heat fluxes in urban areas are discussed.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2011.04.020