무창 육성.비육돈사의 공기유동 특성 분석 = Analysis of Airflow Characteristics in an Enclosed Growing-Finishing Pig House

국문 초록 (Abstract)

본 실험은 무창육성 비육돈사에 있어서 여름과 겨울철 환기를 할 때 공기 유입구에서의 공기속도가 환경에 미치는 영향을 조사하고자 CFD를 이용한 모델을 설정하였고, 현장실험을 통한 결과와 CFD 모델의 공기유속 결과를 서로 비교하였다. 공기속도에 있어서 수학적인 모델은 현장실험 결과와 매우 유사하게 나타났다. 환기시스템에서의 공기흐름은 양쪽 측벽 슬롯 판넬을 통하여 공급하였으며 겨울철은 $2{\sim}2.5m/s$ 였고, 여름철은 0.8 m/s 전후였다. 이상의 연구 결과 여름철과 겨울철 모두 해석 Model과 실험 무창육성 비육돈사내 측정 결과 평균 유속은 근소한 차이로 나타나 공기유동 해석 연구에 있어서 CFD 시뮬레이션의 적용으로 합리적인 결과를 도출할 수 있음을 확인하였다.

다국어 초록 (Multilingual Abstract)

Experiments were carried out to evaluate the air speed distribution of an enclosed growing-finishing pig house in summer and winter. The data taken by experiments were compared to validate with the calculated air speeds by a commercial CFD code, FLUENT. Air basically enters into the house through Baffled slot Inlet and leaves through a exhaust fan attached on the Exhaust fan in exiting wall of the house. Air speeds were measured as $2{\sim}2.5m/s$ at the two side slot in winter and 0.8 m/s in summer. The validation showed that a CFD simulation is one of feasible methods to predict airspeed distribution in the growing-finishing pig house.

참고문헌 (Reference)

1 Janssen, J, 131-135, 1988

2 Sandberg, M, "Velocity characteristics in mechanically ventilated offices rooms" 1987

3 Hoff, S. J, "Three-dimensional buoyant turbulent flows in a sacled model, slot-ventilated livestock confinement facility" 35 (35): 671-686, 1992

4 Leonard, J. J, "The use of archimedes number in the design of ventilation systems for animal housing" 24-28, 1986

5 MWPS, "Swine housing and equipment handbook. MWPS-8. Midwest Plan Service" Iowa State University, Ames 1988

6 Barber, E. M. S, "Stability of air flow patterns in ventilated spaces" ASAE 1982

7 Lee, I, "Optimum design of forced ventilation system of piglet house using computer simulation" ASAE 2002

8 Maghirang, R. G, "Modern particle transport in slot-inlet ventilated airspaces" 36 (36): 1449-1459, 1993

9 Bjerg, B, "Modeling of air inlets in CFD prediction of airflow in ventilated animal houses" 34 : 223-235, 2002

10 Lubinus, Louis, "Mechanical ventilation of swine buildings. Pork Industry Handbook. PIH-60" Cooperative Extension Service, South Dakota State University, Brookings, 1980

11 Jin, Y, "Isothermal airflow characteristics in a ventilated room with a slot inlet opening" 98 (98): 296-306, 1992

12 Timmons, M. B, "Experimental and numerical study of air movement in slot-ventilated enclosures" 86 (86): 221-240, 1980

13 Riskowski, G. L, "Environment in animal regions. Livestock Environment IV, Fourth International Symposium" 411-418, 1993

14 Song, J. I, "Analysis of airflow characteristics in an enclosed nursery pig house" 47 (47): 107-114, 2005

15 Choi, H. L, "An application of the k-ε turbulence model to predict how a rectangular obstacle in a slot-ventilated enclosure effects air flow" 33 (33): 274-281, 1990

16 Choi, H. L, "An application of the k-epsilon turbulence model to pridict air application in a slot-ventilated enclosure" 33 (33): 1804-1813, 1988

17 Choi, H. L, "Air velocity and contaminant distribution in a slot-ventilated enclosure" ASAE 4036