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DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.2050
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T. Okaze
Department of Architecture and Building Science, Tohoku University 6-6-11, Aoba-ku, Sendai 980-8579
Y. Tominaga
Department of Architecture and Building Engineering, Niigata Institute of Technology, 719 Fujihashi, Kashiwazaki, Niigata 945-1195
Akashi Mochida
Graduate School of Engineering, Tohoku University, Aramaki-Aza, Aoba-ku, Sendai 980-8579
Y. Ito
Department of Architecture and Building Science, Tohoku University 6-6-11, Aoba-ku, Sendai 980-8579
M. Nemoto
Snow and Ice Research Center, National Research Institute for Earth Science and Disaster Prevention, 1400 Tokamachi, Shinjo, Yamagata 996-0091
Hiroshi Yoshino
Laboratory of Building Environmental Engineering, Department of Architecture and Building Science, Graduate School of Engineering, Tohoku University 6-6-11, Aoba-ku, Sendai 980-8579
T. Sato
Snow and Ice Research Center, National Research Institute for Earth Science and Disaster Prevention, 1400 Tokamachi, Shinjo, Yamagata 996-0091
要約
Wind tunnel measurements of distributions of wind velocity and transport rate of drifting snow in developing boundary layer above loose and hard snow surfaces were firstly carried out to investigate the characteristics of drifting snow phenomena in a non-equilibrium flowfield. Secondly, a numerical method based on k-ε model was developed, in which the effects of snow particles on the flowfield were considered by adding extra terms in the transport equations of k and ε. Finally, the results of CFD prediction of snowdrift around a cubic building model were shown. Accuracy of results using the new developed model was examined by comparing its result with those obtained from the previous model and field measurement.