Mitigation measures for urban heat island and their impact on pedestrian thermal comfort

Abstract A multiscale coupled model is presented that allows for the detailed analysis of local impact urban heat island mitigation measures. The uses computational fluid dynamics (CFD) simulations with unsteady and moisture transport (HAM) in porous materials order to take into account dynamic storage built environment. realistic case study performed a public square City Zurich during wave conditions. impacts two different strategies, i.e. adding artificial wetting pavements vegetation, on pedestrian thermal comfort are evaluated compared existing situation. results show an improvement both resulting from addition trees larger lasts longer due shadowing effects, even though reduced ventilation increased relative humidity by have adverse effect comfort.