Estimating the effect of snowdrift formation on turbulent airflow and subsequent snowdrift around three types of fences

IF 4.2 2区 工程技术 Q1 ENGINEERING, CIVIL
Seika Tanji
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引用次数: 0

Abstract

This study investigated the effect of formed snowdrifts in advance on the turbulent flow and subsequent snowdrift distribution around three types of snow fences in a numerical simulation. The simulation for an 8 h drifting snow event was conducted with updating the bottom boundaries following the snowdrift structure every 2 h. The calculation domains were flat ground surfaces installed three types of solid fences—two-dimensional fence, three-dimensional fence, and two-dimensional fence with a bottom gap. Snowdrift height on the windward side of the two-dimensional fence was higher in the updating experiment than in no-updating one because wind profiles and snow trajectories were modified depending on the previous snowdrift shapes. Around the three-dimensional and bottom-gap fences, differences of snowdrift height between with and without updating bottom boundaries were generated on the leeward areas. Snowdrifts on the leeward side of these fences were formed on far areas in the no-updating experiment, but the experiment considering the previous snowdrift structures developed snowdrifts closer to the fence. These results suggested that snowdrift development on the leeward side of obstacles could be overestimated if the previous snowdrift structure were neglected in numerical simulations.
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来源期刊
CiteScore
8.90
自引率
22.90%
发文量
306
审稿时长
4.4 months
期刊介绍: The objective of the journal is to provide a means for the publication and interchange of information, on an international basis, on all those aspects of wind engineering that are included in the activities of the International Association for Wind Engineering http://www.iawe.org/. These are: social and economic impact of wind effects; wind characteristics and structure, local wind environments, wind loads and structural response, diffusion, pollutant dispersion and matter transport, wind effects on building heat loss and ventilation, wind effects on transport systems, aerodynamic aspects of wind energy generation, and codification of wind effects. Papers on these subjects describing full-scale measurements, wind-tunnel simulation studies, computational or theoretical methods are published, as well as papers dealing with the development of techniques and apparatus for wind engineering experiments.
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