A numerical investigation of wind environment around a walking human body

Tao, Y, Inthavong, K and Tu, J 2017, 'A numerical investigation of wind environment around a walking human body', Journal of Wind Engineering and Industrial Aerodynamics, vol. 168, pp. 9-19.


Document type: Journal Article
Collection: Journal Articles

Title A numerical investigation of wind environment around a walking human body
Author(s) Tao, Y
Inthavong, K
Tu, J
Year 2017
Journal name Journal of Wind Engineering and Industrial Aerodynamics
Volume number 168
Start page 9
End page 19
Total pages 11
Publisher Elsevier
Abstract Human-induced wake flow characteristics and its interaction with thermal conditions was investigated by performing CFD simulations with dynamic-meshing of a moving manikin model. The manikin motion with and without swinging limbs was achieved by the re-meshing method to update the grid with each time step. The results focused on determining what discrepancies are produced in the flow field by a simplified geometry in the form of a cylinder, swinging limbs and thermal conditions; and whether such assumptions can be made for larger multi-body analysis. Using a cylinder showed differences in the velocity field behind the head and leg gap. The flow field between the rigid motion and swinging limb motion, showed significant discrepancies which corresponded to the gait phase. There were increased airflow disturbances at the hands and ankles (furthest body parts from the pivot point). The influence of thermal plume on the wake flow was minor during walking motion because of the walking speed of 1.2 m/s which dominated the buoyant thermal plume velocity. However, after the manikin stopped moving the thermal plume velocity became comparable to the residual wake.
Subject Computational Fluid Dynamics
Keyword(s) CFD
Dynamic mesh
Human wake flow
Thermal plume
Walking motion
DOI - identifier 10.1016/j.jweia.2017.05.003
Copyright notice © 2017 Elsevier Ltd
ISSN 0167-6105
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