"Numerical investigations of the effects of manikin simplifications on " by Yihuan Yan, Xiangdong Li et al.

Building Simulation: An International Journal

Article Title

Numerical investigations of the effects of manikin simplifications on the thermal flow field in indoor spaces

Authors

Yihuan Yan, School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia School of Architecture, Tsinghua University, PO Box 2021, Beijing 100084, China
Xiangdong Li, School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia
Jiyuan Tu, School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia School of Architecture, Tsinghua University, PO Box 2021, Beijing 100084, China

Keywords

computer-simulated person (CSP), CFD, thermal plume, indoor air quality

Abstract

As one of the most basic parameters, manikin body feature could be an important factor influencing the airflow and temperature fields in indoor environments. This study aims to improve the computational efficiency by optimising and simplifying manikin body features. A 3D scanned computer-simulated person (CSP) with extremely detailed body features was employed, followed by two simplified CSP models with different approaches. One of the simplified models was rebuilt based on the skeleton of the 3D scanned model with very limited body features, while the other model was simplified by removing some of the features from the 3D scanned model. All CSPs were tested under quiescent condition, followed by further comparisons under displacement and mixed ventilations. The outcomes indicated that the geometric difference of manikin body would have significant impact on the airflow patterns near manikin bodies, whilst it has very limited influence on the temperature field. The difference of body features could significantly affect the development of thermal plume, which mainly reflected above the manikin head. Also, change of CSP body features due to simplifications may become more sensitive to the predicted results under mixed ventilation, as a result of fewer interactions between the thermal plume and injected airflow.

DOI

https://doi.org/10.1007/s12273-016-0319-y

Publisher

Tsinghua University Press

Recommended Citation

Yihuan Yan, Xiangdong Li, Jiyuan Tu. Numerical investigations of the effects of manikin simplifications on the thermal flow field in indoor spaces. Build Simul, 2017, 10(2): 219–227.

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