Bin Li, Feng Jiang, Lan Yan, Anna Jiang
Institute of Manufacturing Engineering, Huaqiao University, Xiamen, China.
College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, China.
PLoS One. 2025 Mar 19;20(3):e0315187. doi: 10.1371/journal.pone.0315187. eCollection 2025.
In the increasingly perfect underground garage construction process, the underground garage entrance water blocking problem is getting more and more attention. This paper proposes a kind of air wall water-blocking device applied to underground garage. The device is installed on the side of the straight and curved paths at the entrances and exits of the spiral underground garage. It utilizes two fans to blow the water to the drain on the other side to achieve unobstructed access to stop the water. In this paper, CFD simulation is firstly carried out on the straight road of the spiral underground garage to verify the feasibility of the program. The accuracy of the simulation results was verified by building a straight road model and conducting experiments. After that, an equal-scale 3D model of the spiral underground garage was built. Orthogonal experiments on the effects of inlet water flow velocity, fan wind speed at the straight road and fan wind speed at the curved road on the water blocking effect were carried out by using CFD simulation. A preliminary range of water velocity of 2.250 m/min to 6.786 m/min was obtained experimentally, and this range of water velocity was used as an input parameter for the simulation. The results show that the speed of water flow at the entrance of the garage and the wind speed of the fan at the straight road have a greater effect on the water blocking effect than the wind speed of the fan at the curved road. When the wind speed of the fan at the straight road is 25m/s, proper adjustment of the wind speed of the fan at the curved road can realize a good water-blocking effect of the spiral underground garage entrance within the range of water flow rate of 2.250m/min ~ 6.786m/min. Therefore, in the practical application of using the air wall water blocking scheme to realize the underground garage entrance water blocking strategy is to give priority to improve the wind speed of the fan at the straight road to improve the effect of water blocking.
在日益完善的地下车库建设过程中，地下车库入口的防水问题越来越受到关注。本文提出了一种应用于地下车库的气幕防水装置。该装置安装在螺旋式地下车库出入口的直线段和曲线段一侧，利用两台风机将水吹向另一侧的排水口，以实现通道畅通止水。本文首先对螺旋式地下车库的直线道路进行CFD模拟，验证方案的可行性。通过建立直线道路模型并进行实验，验证了模拟结果的准确性。之后，建立了螺旋式地下车库的等比例三维模型，利用CFD模拟对进水水流速度、直线段风机风速和曲线段风机风速对防水效果的影响进行了正交试验。实验初步得到进水水流速度范围为2.250 m/min至6.786 m/min，并将该水流速度范围作为模拟的输入参数。结果表明，车库入口处的水流速度和直线段风机风速对防水效果的影响比曲线段风机风速更大。当直线段风机风速为25m/s时，适当调整曲线段风机风速，在进水水流速度为2.250m/min ~ 6.786m/min范围内，可实现螺旋式地下车库入口良好的防水效果。因此，在实际应用中采用气幕防水方案实现地下车库入口防水策略时，应优先提高直线段风机风速以提高防水效果。
