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Research Article

Modeling the influence of fountain on urban microclimate

Fei Xue, Xiaofeng Li( ), Jie Ma, Zhiqin Zhang
Department of Building Science, School of Architecture, Tsinghua University, Beijing 100084, China
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Abstract

Fountains are delightful sceneries and can provide refreshing surrounding atmosphere, because of the cooling and humidifying effect of water droplets. To create more pleasant environment, it is valuable to quantify the thermal effect of fountains. This paper introduces a numerical fountain model based on particle-source-in-cell (PSI-Cell) model coupling the jet breakup process, the heat, mass and momentum transfer between droplets and air, and the CFD model of airflow, in which the influence of fountain is taken as source terms. A field measurement was conducted, where the data of one hour was selected to validate the fountain model. The presented model is proved to have good precision in the comparisons against the measured temperature and humidity. This new model is capable of estimating the trajectories of droplets, as well as the impact of fountains on the wind velocity, temperature and humidity in the ambient area. Both the numerical and experimental results show that the fountain can improve the thermal environment in the leeward area by strong cooling and humidifying effect, while minor changes have been made in the windward and lateral areas.

Keywords

CFDurban microclimatefountainparticle-source-in-cell modeljet breakupfield measurement

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Building Simulation
Volume 8 Issue 3,
June 2015
Pages 285-295
DOI: 10.1007/s12273-014-0210-7
Cite this article:
Xue F, Li X, Ma J, et al. Modeling the influence of fountain on urban microclimate. Building Simulation, 2015, 8(3): 285-295. https://doi.org/10.1007/s12273-014-0210-7

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Received: 12 July 2014
Revised: 14 November 2014
Accepted: 24 November 2014
Published: 09 December 2014
© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2014
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