Evaporation pads and tunnel ventilation are commonly adopted in hen houses. To ensure the cooling efficiency of pads and airflow in the building, inlets with pads are often placed in sidewalls. Flaps are often fitted behind inlets to alleviate the sudden temperature drops that can be caused by pads. However, the airflows change their direction after entering from sidewalls with flaps, which affects the environment in the caged-hen occupied zone (OZ). This work explored the effect of inlet position and flap on airflow and temperature in laying hen house using computational fluid dynamics (CFD). The CFD model was validated by field experiments. Results showed that the inlet position and flap significantly affected the airflow and temperature near the inlet. An increased inlet area in the gable wall and a longer distance between cages and sidewall inlets increased air speed, decreased temperature, and improved airflow distribution uniformity in OZ. The maximum increase in air speed, decrease range in temperature, and reduction in the coefficient of air speed variation (CASV) was 0.37 m s⁻¹, 0.19 °C and 11%, respectively. The flap also increased the air speed and decreased the temperature, but it reduced the airflow distribution uniformity. The maximum increase in air speed, decrease range in temperature, and increase of CASV was 0.15 m s⁻¹, 0.07 °C and 6%, respectively. The increase in CASV reduced with the increased distance between the sidewall inlet and cages. Therefore, reducing the overlapping area between sidewall inlets and cages should be considered in practice.

鸡舍通常采用蒸发垫和隧道通风。为了确保建筑物内垫的冷却效率和空气流通，通常将带有垫的入口放置在侧壁上。挡板通常安装在入口后面，以减轻可能由垫引起的温度骤降。但是，气流从带有襟翼的侧壁进入后会改变方向，这会影响笼养雌鸟占据区（OZ）的环境。这项工作使用计算流体力学（CFD）探索了入口位置和襟翼对蛋鸡舍气流和温度的影响。通过现场实验验证了CFD模型。结果表明，进气口的位置和襟翼会显着影响进气口附近的气流和温度。山墙中的入口面积增加，笼子和侧壁入口之间的距离更长，从而提高了空气速度，降低了温度并改善了OZ中的气流分布均匀性。风速的最大增加，温度的减小范围和风速变化系数（CASV）的减小为0.37 m s^-1，0.19℃，分别为11％。襟翼还提高了风速并降低了温度，但降低了气流分布的均匀性。在空气中的速度，在温度下降范围内，并且CASV的增加的最大增加为0.15米每秒^-1，°0.07 C和6％。CASV的增加随着侧壁入口和阀笼之间距离的增加而减小。因此，在实践中应考虑减少侧壁入口和阀笼之间的重叠区域。