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Development of a CFD model to study ventilation efficiency of mechanically ventilated pig house
강제환기식 돈사의 환기 효율성 분석을 위한 CFD 모델 개발

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Issue Date
2008
Publisher
한국농공학회 = Korean Society of Agricultural Engineers
Citation
Journal of the Korean society of agricultural enginners, 50(1), pp. 25-37
Keywords
CFDmechanical ventilationpig houseventilation efficiency
Abstract
When livestock facilities in Korea have been changed larger and denser, rearing conditions have been getting
worse and the productivity of animal production have been decreased. Especially in the cold season, the minimized
ventilation has generally been operated to save energy cost in Korea resulting in very poor environmental
condition and high mortality. While the stability, suitability, and uniformity of the rearing condition are the most
important for high productivity, the ventilation configuration is the most important to improve the rearing condition
seasonally. But, it is so difficult to analyze the internal air flow and the environmental factors by conducting
only field experiment because the weather condition is very unpredictable and unstable as well as the structural
specification can not be easily changed by the researchers considering cost and labor. Accordingly, an aerodynamic
computer simulation was adopted to this study to overcome the weakness of conducting field experiment and
study the aerodynamic itself. It has been supposed that the airflow is the main mechanism of heat, mass, and
momentum transfers. To make the simulation model accurately and actually, simplified pig models were also developed.
The accuracy of the CFD simulation model was enhanced by 4.4 % of errors compared with the data
collected from field experiments. In this paper, using the verified CFD model, the CFD computed internal
rearing condition of the mechanically ventilated pig house were analyzed quantitatively as well as qualitatively.
Later, this developed model will be computed time-dependently to effectively analyze the seasonal ventilation
efficiency more practically and extensively with tracer gas decay theory.
ISSN
1738-3692
Language
Korean
URI
https://hdl.handle.net/10371/37319
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