원예시설용 망의 압력강하 특성에 대한 실험적 연구
An Experimental Study on Characteristics of Pressure Drop of Screens Used in Horticultural Facilities
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참고문헌
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초록
This study was carried out to present the pressure drop for various wind speeds through nine types of screens used in horticulturalfacilities. The screens have been widely used to prevent harmful insects from being entered into agricultural facilities, to reducestrong wind and to shade a light as well. Whatever the usage of the screens was, it was necessary to have good knowledge of howmuch the screen caused a pressure drop for wind speeds when analyzing both the inner thermal-flow distribution in the facility andthe effect of reducing wind speed by using CFD. Furthermore, as for wind screens, the pressure drop for wind speeds was neededas a design load in evaluating the structural stability of the structures supporting the screens. Therefore, the pressure drop throughthe screens for wind speeds of 5～30 m ․ s－1 at about 5 m ․ s－1 interval and inflow angles of 0∼45° at an interval of 15° wasrespectively measured in a subsonic wind tunnel. The relation of the pressure drop for various screens was well fitted as a secondorderpolynomial expression.
Abstract
This study was carried out to present the pressure drop for various wind speeds through nine types of screens used in horticulturalfacilities. The screens have been widely used to prevent harmful insects from being entered into agricultural facilities, to reducestrong wind and to shade a light as well. Whatever the usage of the screens was, it was necessary to have good knowledge of howmuch the screen caused a pressure drop for wind speeds when analyzing both the inner thermal-flow distribution in the facility andthe effect of reducing wind speed by using CFD. Furthermore, as for wind screens, the pressure drop for wind speeds was neededas a design load in evaluating the structural stability of the structures supporting the screens. Therefore, the pressure drop throughthe screens for wind speeds of 5～30 m ․ s－1 at about 5 m ․ s－1 interval and inflow angles of 0∼45° at an interval of 15° wasrespectively measured in a subsonic wind tunnel. The relation of the pressure drop for various screens was well fitted as a secondorderpolynomial expression.
참고문헌 (7)
- ANSYS., "ANSYS CFX-Solver modeling guide. ANSYS CFX Release 13.0" (2010), ANSYS, Inc
- 정성수, "풍속변화에 따른 방풍망의 음향특성 평가", 새물리, 59(4), pp.343~348 (2009), 한국물리학회
- Lee, S. P., "Effect of different wind-break net on reducing damage of cold sea wind", Korean Journal of Crop Science, 35(4), pp.352~361 (1990)
- Ministry for Food, Agriculture, Forestry and Fisheries (MIFAFF), "The drawings and detailed statements of antidisaster specifications for horticultural and special-crops facilities", 43~50 (2010)
- National Academy of Agricultural Science, "Annual research report of agricultural engineering 2010, 610- 611. Suwon, Korea (in Korean)", ~ (2011)
- 염성현, "전산 해석에 의한 파풍망의 설치효과와 최적 파이프 규격", 바이오시스템공학, 32(6), pp.430~439 (2007), 한국농업기계학회
- 염성현, "풍동시험과 CFD를 통한 방풍망의 풍속저감 효과", 바이오시스템공학, 36(5), pp.355~360 (2011), 한국농업기계학회