International Journal of Heat and Mass Transfer 124 (2018) 233–246 Contents lists available at ScienceDirect International Journal of Heat and Mass Transfer journal homepage: www.elsevier.com/locate/ijhmt Non-uniform ground-level wind patterns in a heat dome over a uniformly heated non-circular city Yifan Fan, Yuguo Li , Shi Yin Department of Mechanical Engineering, The University of Hong Kong, Pok Fu Lam Road, Hong Kong Special Administrative Region article i nfo abstract Article history: Urban heat island-induced circulation, or urban heat dome ﬂow, signiﬁcantly inﬂuences urban thermal Received 25 October 2017 environments and air quality in calm wind conditions with stable stratiﬁcation. An urban heat dome is Received in revised form 1 February 2018 characterized by convergent inﬂow at the ground level, divergent outﬂow at the upper level and upward Accepted 21 March 2018 ﬂow over the city center in calm conditions. We report a new city-shape effect on heat dome ﬂow pat- Available online 5 April 2018 terns in a laboratory modeling experiment. For a circular city, both the inﬂow at the lower level and the outﬂow at the upper level are axisymmetric. For a square urban area, a non-uniform ﬂow pattern Keywords: was observed with four dominant diagonal inﬂows at the
International Journal of Heat and Mass Transfer – Elsevier
Published: Sep 1, 2018
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