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Research Article

Flow field around a surface-mounted cubic building with louver blinds

Fujian Jiang1, Zhengrong Li1( ), Qun Zhao2, Qiuhua Tao3, Yanping Yuan4, Shunyao Lu1
School of Mechanical Engineering, Tongji University, Shanghai 200092, China
College of Architectural and Urban Planning, Tongji University, Shanghai 200092, China
College of Mechanical Engineering, Jimei University, Xiamen 361021, China
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
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Abstract

Louver blinds are commonly used in building designs to avoid excessive solar radiation in an indoor environment, particularly for buildings with highly glazed facades. However, little attention has been given to their impact on flow field and pressure distribution around a building, which is crucial for predicting convective heat transfer, pollutant dispersion, and indoor ventilation. Therefore, the present study combined a wind-tunnel experiment with computational fluid dynamics simulations to study a wind velocity profile, flow field patterns, and surface pressure around a cubic building with louver blinds. The louver blinds move windward flow separation in an upward direction and extend the recirculation region of a roof; moreover, some subvortices are generated between the two adjacent louver slats. Louver angle φ, installing distance W, and slat width B severely affect the generation of subvortices between slats and a conical vortex on the roof. Subsequently, blinds with different φ, W, and B exhibit different pressure distributions on the windward surface and top surface of a building.

Keywords

computational fluid dynamicswind pressureflow fieldlouver blindswind-tunnel experiment

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Building Simulation
Volume 12 Issue 1,
February 2019
Pages 141-151
DOI: 10.1007/s12273-018-0493-1
Cite this article:
Jiang F, Li Z, Zhao Q, et al. Flow field around a surface-mounted cubic building with louver blinds. Building Simulation, 2019, 12(1): 141-151. https://doi.org/10.1007/s12273-018-0493-1

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Received: 08 July 2018
Revised: 01 November 2018
Accepted: 04 November 2018
Published: 21 December 2018
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018
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