1.华中农业大学工学院,武汉430070
2.华中农业大学动物科学技术学院、动物医学院,武汉430070
3.武汉软件工程职业学院(武汉开放大学),武汉430205
周健伟,E-mail:1254825924@qq.com
王树才,E-mail:wsc01@mail.hzau.edu.cn
收稿:2025-01-07,
纸质出版:2025-03-06
移动端阅览
周健伟,魏泽彬,王树才,等.密闭式笼养蛋鸡舍秋季热环境数值模拟与优化[J].华中农业大学学报,2025,44(2):49‐61.
ZHOU Jianwei,WEI Zebin,WANG Shucai,et al.Numerical simulation and optimization of thermal environment in a closed cage-rearing layer house in autumn[J].Journal of Huazhong Agricultural University,2025,44(02):49-61.
周健伟,魏泽彬,王树才,等.密闭式笼养蛋鸡舍秋季热环境数值模拟与优化[J].华中农业大学学报,2025,44(2):49‐61. DOI: 10.13300/j.cnki.hnlkxb.2025.02.006.
ZHOU Jianwei,WEI Zebin,WANG Shucai,et al.Numerical simulation and optimization of thermal environment in a closed cage-rearing layer house in autumn[J].Journal of Huazhong Agricultural University,2025,44(02):49-61. DOI: 10.13300/j.cnki.hnlkxb.2025.02.006.
为优化秋季纵向通风模式下的密闭式笼养蛋鸡舍热环境,通过计算流体力学(computational fluid dynamics, CFD)模拟当前蛋鸡舍的温度场、相对湿度场及空气流速场分布状况,对数值模型进行准确度验证,并通过17组正交仿真试验求解通风设备参数(前山墙隧道进气口导流板夹角
θ
1
、侧墙隧道进气口夹角
θ
2
、末端单个负压风机的通风量
Q
)处于3个不同水平时鸡笼区域的平均温度-湿度-风速指数(temperature-humidity-velocity index,THVI)及变异系数CV
THVI
(coefficient of variation of THVI)。结果显示:笼间通道设置的24个验证点的温度、相对湿度和空气流速的平均相对误差分别为0.38%、0.52%、4.62%,数值模型准确度较高;而通风设备参数
θ
1
、
θ
2
、
Q
分别取值10°、90°、42 000 m³/h时,鸡笼区域气流场平均THVI和变异系数CV
THVI
分别为25.6
5和1.64%,相较原通风方案分别下降1.61%和23.93%,有利于提升蛋鸡舍鸡笼区域的热环境适宜度及均衡性。
The distribution of the temperature field, relative humidity field, and airflow velocity field in the current layer house was simulated with computational fluid dynamics (CFD) to optimize the thermal environment in a closed cage-rearing layer house under the mode of vertical ventilation in autumn. The accuracy of the numerical model was verified. The average THVI (temperature-humidity-velocity index) and coefficient of variation (CV
THVI
) of the cage-rearing areas were calculated for the parameters of ventilation equipment including the angle of the guide plate at the front mountain wall tunnel inlet(
θ
1
), the angle of the guide plate at the side wall tunnel inlet(
θ
2
) and ventilation volume of a suction fan at the end(
Q
) at three different levels by conducting 17 sets of orthogonal simulation experiments. The results showed that the average relative error of temperature, relative humidity, and airflow velocity at the 24 verification points set on the aisle of cage was 0.38%, 0.52%, and 4.62%, respectively, indicating that the accuracy of the numerical model is high. When the parameters of ventilation equipment
θ
1
,θ
2
and
Q
were set to 10°,90° and 42 000 m³/h, the average THVI and coefficient of variation CV
THVI
of the airflow field in the cage-rearing areas was 25.65 and 1.64%, 1.61% and 23.93% lower than that of the original scheme of ventilation, beneficial for improving the suitability and balance of the thermal environment in the cage-rearing areas of the layer house.
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