Abstract: The objective of this study was to address the difficulty of directly observing the internal growth environment of edible mushroom shelters. The self‑designed Yuhuang mushroom cabin was selected as the subject of investigation. The internal flow field, velocity, temperature, and humidity distribution in the cabin were studied using computational fluid dynamics methods and models such as porous media and component transport. The results indicated that the resistance coefficient between the mushroom packages was not significantly correlated with the arrangement of mushroom packages. The internal resistance coefficient and viscous resistance coefficient at radial and axial were 37.66, 5.68×105, 6.64 and 5.32×105, respectively. The highest temperature recorded within the cabin was 24 ℃, situated in close proximity to both the fresh air outlet and the outlet of the humidification pipeline. In contrast, the lowest temperature was observed in the vicinity of the air conditioning outlet, at 16 ℃. As one moved away from the fresh air outlet and air conditioning outlet, the temperature difference within the cabin gradually decreased. The humidity and temperature in the growth area of the mushroom were found to be relatively uniform, with an average temperature of 18 ℃, which was conducive to the growth of the Yuhuang mushroom.

Key words: edible mushroom cabin, computational fluid dynamics, porous medium, internal flow, temperature and humidity field

摘要： 针对食用菌方舱内部生长环境直接观测难度较大的问题，以自主设计的榆黄菇培养方舱为研究对象，基于多孔介质、组分传输等模型，应用计算流体力学方法研究方舱的内部流场与速度、温度、湿度分布。结果表明：菌包组间的阻力系数与菌包的排布关系不大，径向和轴向上的内部阻力系数、粘性阻力系数分别为37.66、5.68×10⁵和6.64、5.32×10⁵。方舱内的最高温度在新风出风口和加湿管道出口附近，约为24 ℃；最低温度在空调出风口附近，约为16 ℃；随着远离新风出风口和空调出风口，方舱内的温差逐渐减小；菌菇生长区域的湿度、温度较均匀，平均温度约为18 ℃，适合榆黄菇生长。

关键词: 食用菌方舱, 计算流体力学, 多孔介质, 内部流动, 温湿度场