Computational fluid dynamics analysis of the thermal distribution of animal occupied zones using the jet-drop-distance concept in a mechanically ventilated broiler house

Kwon, Kilsung; Lee, In-Bok; Zhang, G. Qiang; Ha, Tae Yong

doi:10.1016/j.biosystemseng.2015.05.008

Cited by 42 publications

(19 citation statements)

References 19 publications

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“…To include these animals in the simulations, it was decided to approximate their shape with boxes (0.7 m high × 0.5 m wide × 1.6 m in length) (Figure 3D). Kwon et al (2015) also used boxes to represent pigs and the results of their simulations corroborated the experimental data of Zhang and Strøm (1999).…”

Section: Geometry and Meshmentioning

confidence: 69%

“…A tested CFD model can reduce the number of experiments and allows for the testing of several design possibilities since virtual prototypes as well as environ-with mechanical ventilation system mental improvements may be tested. There are several possibilities that can be studied through CFD simulations, such as air flow inside buildings as related to the ventilation system (Bartzanas et al, 2007;Blanes-Vidal et al, 2008;Seo et al, 2009;Saraz et al, 2013;Norton et al, 2013;Bustamante, 2013;Kwon et al, 2015;Rong et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Application of computational fluid dynamics on a study in swine facilities with mechanical ventilation system

Sousa

Sabino

Moura

et al. 2018

Sci. agric. (Piracicaba, Braz.)

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Ventilation systems used in swine facilities deserve to be studied because they directly affect productivity in the pig farming sector. Bearing this in mind the uniformity of air distribution and temperature is essential to animal welfare in this breeding environment. Thus, the purpose of this study was to identify whether changes in air entrances and exhaust fan positioning could influence air velocity and temperature distribution. The experimental data were collected in a commercial full-scale sow facility. Validation was carried out by comparing the simulated air temperatures and data measured in the field. These results showed agreement between data with a maximum relative error of approximately 3 %. The real settings showed a gradual increase in the air velocity from the air entrances and dead zones due to the change in airflow direction. There was no difference when the positioning of the exhaust fans was altered or was maintained in the original air entrances. The proposed arrangement with only one air inlet reduced the areas of low air movement as a consequence of the change in flow direction. Furthermore, the variables have the same pattern along the transversal plane. The simulations showed that the position of the air inlets had a higher influence on temperature distribution.

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Section: Geometry and Meshmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Application of computational fluid dynamics on a study in swine facilities with mechanical ventilation system

Sousa

Sabino

Moura

et al. 2018

Sci. agric. (Piracicaba, Braz.)

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“…(3) . The RNG k–ε turbulence model performs well in simulating indoor airflow with a low-Reynolds-number two-equation model; thus, it has been widely used ( Küçüktopcu and Cemek, 2019 ; Kwon et al, 2015 ). In this study, the airflow of a dental clinic with a low-velocity air supply belongs to a low-Reynolds-number flow; thus, the RNG k–ε model was adopted.…”

Section: Methodsmentioning

confidence: 99%

Estimating the restraint of SARS-CoV-2 spread using a conventional medical air-cleaning device: Based on an experiment in a typical dental clinical setting

Liu

Zhang

Liu

et al. 2023

International Journal of Hygiene and Environmental Health

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“…Consequently, the response of the automatic system (controllers) in terms of the number of exhaust fans to be switched on or off would be insufficient to reach the ideal environmental conditions (Miles et al, 2013;Moore et al, 2011). The use and support of mathematical tools and computational techniques help to understand the operating conditions to achieve an effective control of the system (Kwon et al, 2015;Mirzaee-Ghaleh et al, 2015;Rojano et al, 2015). In this research, a solution is implemented by means of the strategic positioning of sensors.…”

Section: Introductionmentioning

confidence: 99%

Positioning of sensors for control of ventilation systems in broiler houses: a case study

Curi

Conti

Vercellino

et al. 2017

Sci. agric. (Piracicaba, Braz.)

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Ventilation systems are incorporated at intensive poultry farms to control environment conditions and thermal comfort of broilers. The ventilation system operates based on environmental data, particularly measured by sensors of temperature and relative humidity.Sensors are placed at different positions of the facility. Quality, number and positioning of the sensors are critical factors to achieve an efficient performance of the system. For this reason, a strategic positioning of the sensors associated to controllers could support the maintenance and management of the microclimate inside the facility. This research aims to identify the three most representative points for the positioning of sensors in order to support the ventilation system during the critical period from 12h00 to 15h00 on summer days. Temperature, relative humidity and wind speed were measured in four different tunnel ventilated barns at the final stage of the production cycle. The descriptive analysis was performed on these data. TheTemperature and Humidity Index (THI) was also calculated. Then, the geostatistical analysis of THI was performed by GS + and the position of sensors was determined by ordinary kriging. The methodology was able to detect the most representative points for the positioning of sensors in a case study (southeastern Brazil). The results suggested that this strategic positioning would help controllers to obtain a better inference of the microclimate during the studied period (the hottest microclimate), considered critical in Brazil. In addition, these results allow developing a future road map for a decision support system based on 24 h monitoring of the ventilation systems in broiler houses.

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Computational fluid dynamics analysis of the thermal distribution of animal occupied zones using the jet-drop-distance concept in a mechanically ventilated broiler house

Cited by 42 publications

References 19 publications

Application of computational fluid dynamics on a study in swine facilities with mechanical ventilation system

Application of computational fluid dynamics on a study in swine facilities with mechanical ventilation system

Estimating the restraint of SARS-CoV-2 spread using a conventional medical air-cleaning device: Based on an experiment in a typical dental clinical setting

Positioning of sensors for control of ventilation systems in broiler houses: a case study

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