Abstract
Thermal performance of five bicycle helmets was evaluated with a thermal manikin head with six zones. Evaluation was made with physical and virtual experimental methods. Ambient temperature maintained at 24 °C and surface temperature of the thermal manikin head was set to 34 °C. Experiments were performed for air velocities of 1.6 m/s and 6 m/s. Heat transfer (W) of four thermal zones was recorded for five helmets and compared with a nude thermal manikin head to assess thermal performance. Virtual experiments were performed using commercial CFD codes with a realizable k-ε turbulence model. Correlation coefficients of 0.78 (1.6 m/s) and 0.79 (6 m/s) were found between physical and virtual experiments. A combined physical and virtual evaluation methodology allows creating a design iteration process with virtual prototypes, physical prototypes and commercially available helmets.
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The wind tunnel tests were performed at the facility of Ergonomics and Aerosol Technology, Department of Design Sciences, Lund University.
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Mukunthan, S., Kuklane, K., Huysmans, T., De Bruyne, G. (2018). A Comparison Between Physical and Virtual Experiments of Convective Heat Transfer Between Head and Bicycle Helmet. In: Cassenti, D. (eds) Advances in Human Factors in Simulation and Modeling. AHFE 2017. Advances in Intelligent Systems and Computing, vol 591. Springer, Cham. https://doi.org/10.1007/978-3-319-60591-3_47
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DOI: https://doi.org/10.1007/978-3-319-60591-3_47
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