基于实地测试及数值计算的大型喷漆机库气流组织研究

Air distribution of a large painting hangar based on field test and numerical calculation

结合实际项目,采用实地测试和数值计算方法对大型客机喷漆机库通风系统气流组织进行了研究。分别对飞机机身、机翼和尾翼表面附近气流速度和机身中线处速度矢量的测试数据进行了分析。通过对气流均匀性和湍流度分析发现,系统风量平衡调试和送风口安装调节阀是影响系统风量平衡的关键因素。对机身两侧2个完全对称的送风口的风速衰减情况进行了测试,得出送风口速度衰减呈线性规律。采用数值计算的方法研究了操作平台对喷漆机库空调通风系统气流组织的影响程度,建议为减小操作平台对气流的阻挡作用应采用开孔支架板,并给出了系统在设计、调试和运维阶段相应的建议。

Combining with the actual project, studies the air distribution of the ventilation system of the large passenger plane painting hangar by field test and numerical calculation. Analyses the test data of the airflow velocity near the surface of aircraft fuselage, wing and tail and the velocity at the centerline of aircraft fuselage. Through the analysis of airflow uniformity and turbulence, finds that the adjustment of system air volume balance and the installation of regulating valve at air supply outlet are the key factors affecting system air volume balance. Tests the wind speed attenuation of two completely symmetrical air supply outlets on both sides of the fuselage. The results show that the velocity attenuation of the air supply outlet is linear. Studies the influence of the operating platform on the air distribution of the air conditioning and ventilation system of the painting hangar by numerical calculation. Suggests that the perforated support plate should be used to reduce the blocking effect of the operating platform on the airflow. Gives the corresponding suggestions in the design, commissioning and operation and maintenance stages of the system.