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首页> 外文期刊>Agronomy Research >Computational fluids dynamics (CFD) in the spatial distribution of air velocity in prototype designed for animal experimentation in controlled environments
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Computational fluids dynamics (CFD) in the spatial distribution of air velocity in prototype designed for animal experimentation in controlled environments

机译：专为受控环境中的动物实验设计的原型中风速空间分布中的计算流体动力学（CFD）

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Maintaining a comfortable and productive thermal environment is one of the majorn challenges of poultry farming in tropical and hot climates. The thermal environment encompasses a number of factors that interact with each other and reflect the actual thermal sensation of the animals. These factors characterize the microclimate inside the facilities and influence the behaviour, performance and well-being of the birds. Thus, the objective of this study is to propose and validate a computational model of fluid dynamics to evaluate the spatial distribution of air velocity and the performance of a system designed to control air velocity variation for use in experiments with birds in controlled environment. The performance of the experimental ventilation prototype was evaluated based on air velocity distribution profiles in cages. Each prototype consisted of two fans coupled to a PVC pipe 25 cm in diameter, one at each end of the pipe, with airflow directed along the entire feeder installed in front of the cages. The contour conditions considered for the simulation of airflow inside the cage were air temperature of 35 °C at the entrance and exit of the cage; air velocity equal to 2.3 m s -1 at the entrance of the cage; pressure of 0 Pa. The model proposed in this study was representative when compared to the experimental measurements, and it can be used in the study of air flow behaviour and distribution for the improvement of the prototype design for later studies.
机译：在热带和炎热气候下，保持舒适和高效的热环境是家禽养殖的主要挑战之一。热环境包含许多相互影响并反映动物实际热感的因素。这些因素表征了设施内部的微气候，并影响了鸟类的行为，性能和健康。因此，本研究的目的是提出并验证一种流体动力学计算模型，以评估风速的空间分布以及设计用于控制风速变化的系统的性能，以用于在受控环境中进行鸟类实验。实验通风原型的性能是根据笼中空气速度分布曲线进行评估的。每个原型都由两个风扇组成，这些风扇与直径为25 cm的PVC管相连，在管的两端各有一个，气流沿安装在笼子前面的整个进料器引导。模拟笼子内部气流的轮廓条件为：笼子入口和出口的空气温度为35°C;笼子入口处的风速等于2.3 m s -1;压力为0 Pa。与实验测量结果相比，本研究中提出的模型具有代表性，可用于研究气流行为和分​​布，以改进原型设计，以供后续研究使用。

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