Improved semi-analytical method for air curtains prediction

•A modified semi-analytical model for determining air curtains efficiency is proposed.•Experimental measurements according to the AMCA standard are carried out employing hot wire anemometry technology.•Three-dimensional CFD simulations are carried out employing LES models.•The proposed model agrees...

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Bibliographic Details
Published in:Energy and buildings 2013-11, Vol.66, p.258-266
Main Authors: Giráldez, H., Pérez Segarra, C.D., Rodríguez, I., Oliva, A.
Format: Article
Language:English
Subjects:
Air curtain
Air curtains
Applied sciences
Building technical equipments
Buildings
Buildings. Public works
Computation methods. Tables. Charts
Computational efficiency
Computational fluid dynamics
Energies
Environmental engineering
Exact sciences and technology
Experimental measurement
Flying
Heat engineering
Insects
LES calculations
Mathematical models
Pedestrians
Semi-analytical method
Structural analysis. Stresses
Termoenergètica
Termotècnia
Thermal efficiency
Three dimensional
Àrees temàtiques de la UPC
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Summary:•A modified semi-analytical model for determining air curtains efficiency is proposed.•Experimental measurements according to the AMCA standard are carried out employing hot wire anemometry technology.•Three-dimensional CFD simulations are carried out employing LES models.•The proposed model agrees both with experimental measurements and CFD calculations carried out by the authors.•Different parametric studies are carried out in order to predict the air curtain behaviour in different situations. The present study is devoted to the analysis and prediction of the efficiency of air curtains. The attention is focused on improving existing semi-analytical methods with the information from CFD simulations and experimental measurements. The goal is to obtain an accurate simplified model which describes the three-dimensional behaviour of the air jet without requiring large time consuming calculations. The interaction of the air curtain with other agents, e.g. pedestrians and flying insects, is also revised. The model is validated against both experimental data and advanced LES calculations carried out by the authors. Furthermore, a parametric study shows the air curtain behaviour for different configurations.
ISSN:0378-7788
DOI:10.1016/j.enbuild.2013.07.011