吹雪障害防止のための防雪さくの開発とその性能評価 : 吹払い効果ならびに視程の改善

概要

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The purpose of the present study was to develop snow fences (blowing-off fence) with an optimum configuration for prevention of snowdrifts and improvement of visibility on roadways. The design was developed in accordance with hydrodynamic principles, and its performance was evaluated by blowing-snow simulation in a wind tunnel. The snowdrifts and visibility behind the snow fence were found to be caused by the rolling-up of the gap flow passing through the bottom part of the fence. It was found that the rolling-up of the bottom gap flow could be prevented by controlling a shear layer separated from the top of the snow fence because the rolling-up of the gap flow occurred alternately with one generated from the top part. In accordance with this finding, several types of snow fences were designed with the objective of controlling their shear layer. All of them succeeded in preventing snowdrifts and improving visibility significantly in comparison with conventional snow fences.
一般社団法人日本機械学会の論文
1992-06-25