Targeted air supply to the working area of a tall plant based on the principle of fluid topology optimization

On the basis of the fluid topology optimization theory, this paper proposes a novel fluid topology optimization design method for building ventilation airflow organization. By constructing a multiobjective optimization model, taking the airflow velocity and uniformity in the working area as the key optimization objectives, and adopting the influence of topological deformation on turbulence energy in turbulent flow as a constraint, the problems of the nonuniformity of local air velocity and the strong sense of blowing in traditional airflow organization layouts can be effectively solved. The numerical simulation and scale-down experimental verification results show that an optimized air outlet layout design can significantly reduce the velocity target value in the work area. The average target value is 0.156, the greatest reduction compared with results of the traditional method is approximately 30 %, the air velocity is stably maintained in the normative range of 0.25–0.3 m/s, and the target accuracy of the air supply is close to 0.92, significantly improving air quality and work area comfort. This study provides theoretical innovations and practical guidance for the optimal design of airflow systems and air distribution in industrial buildings. According to the different objective functions, the fluid topology optimization method, which can automatically generate complex flow channel topologies, provides a new tool for the efficient and optimal design of air distribution.