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2021 Vol.63, Issue 5 Preview Page
Wind Tunnel Evaluation of Aerodynamic Coefficients of Thuja occidentalis and Mesh Net

풍동실험을 통한 방풍용 서양측백나무와 농업용방풍망의 공기역학계수 평가

Sojin Leea
,
Taehwan Haa†
,
Siyoung Seoa
,
Hosung Songb
,
Saemee Wooa
,
Yuna Janga
,
Minwoong Jungc
,
Gwanggon Joa
,
Dukwoo Hana
,
Okhwa Hwanga
이 소진a
,
하 태환a†
,
서 시영a
,
송 호성b
,
우 샘이a
,
장 유나a
,
정 민웅c
,
조 광곤a
,
한 덕우a
,
황 옥화a
aResearcher, Division of Animal Environment, National Institute of Animal Science (NIAS)
bPostdoctoral researcher, Division of Disaster Prevention Engineering, National Institute of Agricultural Sciences (NAS)
cSenior researcher, Division of Animal Environment, National Institute of Animal Science (NIAS)
a국립동물과학원(NIAS) 동물환경과 연구원
b국립농업과학원 방재공학부 박사후 연구원
c국립동물과학원(NIAS) 동물환경과 선임연구원
† Corresponding author Tel.: +82-63-238-7406, Fax: +82-63-238-7447 E-mail: thha54@korea.kr
2021. pp. 63-71
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Abstract

Windbreak forests, which have a windproof effect against strong winds, are known to be effective in reducing the spread of odors and dust emitted from livestock farms. The effect of reducing the spread of odors and dust can be estimated through numerical models such as computational fluid dynamics, which require aerodynamic coefficients of the windbreaks for accurate prediction of their performance. In this study, we aimed to evaluate the aerodynamic coefficients, Co, C1, C2, and α, of two windbreaks, Thuja occidentalis and a mesh net, through wind tunnel experiments. The aerodynamic coefficients were derived by the relation between the incoming wind speed and the pressure loss due to the windbreaks which was measured by differential pressure sensors. In order to estimate the change in the aerodynamic coefficient concerning various leaf density, the experiments were conducted repeatedly by removing the leaves gradually in various stages. The results showed that the power law regression model more suitable for coefficient evaluation compared to the Darcy-Forchheimer model.

Keywords
Aerodynamic coefficient
mesh net
windbreak tree
wind tunnel
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 63
  • No :5
  • Pages :63-71
  • Received Date : 2020-08-21
  • Revised Date : 2021-09-15
  • Accepted Date : 2021-09-15
  • DOI :https://doi.org/10.5389/KSAE.2021.63.5.063
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