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Advances in Meteorology
Volume 2014 (2014), Article ID 791256, 20 pages
http://dx.doi.org/10.1155/2014/791256
Research Article

Wind Velocity Decreasing Effects of Windbreak Fence for Snowfall Measurement

Department of Architecture Engineering, Chonbuk National University, 567 Baekje-daero, deokjin-gu, Jeonju-si, Jeollabuk-do 561-756, Republic of Korea

Received 26 September 2013; Revised 23 January 2014; Accepted 23 January 2014; Published 16 March 2014

Academic Editor: Sven-Erik Gryning

Copyright © 2014 Ki-Pyo You and Young-Moon Kim. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Meteorological observatories use measuring boards on even ground in open areas to measure the amount of snowfall. In order to measure the amount of snowfall, areas unaffected by wind should be found. This study tried to determine the internal wind flow inside a windbreak fence, identifying an area unaffected by wind in order to measure the snowfall. We performed a computational fluid dynamics analysis and wind tunnel test, conducted field measurements of the type and height of the windbreak fence, and analyzed the wind flow inside the fence. The results showed that a double windbreak fence was better than a single windbreak fence for decreasing wind velocity. The double fence (width 4 m, height 60 cm, and fixed on the bottom) has the greatest wind velocity decrease rate at the central part of octagonal windbreak.