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《Aeronautical Science & Technology》 2020-01
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Data Correlation Between Aerodynamic Validation Model and CFD-Wind Tunnel

Zhong Min;Hua Jun;Sun Xiasheng;Zheng Sui;Wang Ganglin;Zhang Guoxin;Wang Hao;Li Yan;Li Xiaofei;Bai Junqiang;Chinese Aeronautical Establishment;Northwestern Polytechnical University;  
During the investigation of a new generation long-haul commercial aircraft at cruise Mach number around 0.85, it is verified that the model deformation and support interference are very significant in the wind tunnel test,which should be highly recognized while applying such wind tunnel data for Computational Fluid Dynamics(CFD)validation. This observation is further outlined via the review of the AIAA Drag Prediction Workshops. The Chinese Aeronautical Establishment-Aerodynamics Validation Model(CAE-AVM) features a large aspect-ratio supercritical wing and rear-fuselage mounted engines. In the design process, numerical optimization and inverse design method are both applied. The wind tunnel models of CAE-AVM cruise configuration and AVM-HL high-lift configuration have been tested in the German-Dutch Wind-tunnels DNW-HST and LLF. Simultaneous measurements of the forces,pressure distributions, wing deformation and flow transition were applied and a special experiment database for CFD validation has been generated. The correlation between CFD results and wind tunnel test data is established based on the CFD analysis of CAE-AVM, with and without wing deformation and Z-sting support. Based on the above observations, the 1 st CAE-DNW Workshop on CFD-Wind tunnel Correlation Study was held with the major conclusion that model deformation and support interference in the wind tunnel tests should be taken into account during CFD verifications.
【CateGory Index】: V211.74
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