Influence of relative velocity between wind flow and walking pedestrians on human physiological responses and thermal comfort

Abstract

It is appropriate to evaluate thermal comfort and heatstroke risk in urban street area based on the accumulated heat stress of walking pedestrians and their human physiological responses. Additionally, since the wind environment to which pedestrians are exposed differs according to the direction of walking even in the same urban street, it is considered to change the human physiological responses, the thermal comfort and heatstroke risk of walking pedestrians. In this study, the influence of the wind environment to which pedestrians are exposed on the human physiological responses and the thermal comfort of walking pedestrians was quantitatively evaluated by the results of simultaneous measurement of the physical environment to which pedestrians are exposed and the amount of human physiological responses of walking pedestrians and numerically simulated by CFD analyses coupled with calculations of radiation and conduction. Moreover, the effects of countermeasures against urban warming introduced in the urban street were evaluated based on the accumulated heat stress of walking pedestrians.