The characteristics and corrections of ventral support interferences in the transonic‑speed wind tunnel for the blended‑wing‑body aircraft  

作　　者：Aoxiang Qiu Weimin Sang Shuya Du Bo An Dong Li Binqian Zhang 

机构地区：[1]School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China

出　　处：《Advances in Aerodynamics》2024年第1期304-323,共20页空气动力学进展(英文)

基　　金：This work has benefited greatly from the support of the National Key Project of China under grant GJXM92579;the Shenyang Key Laboratory of Aircraft Icing and Ice Protection.

摘　　要：For the problem of ventral support interference in a transonic-speed wind tunnel with the blended-wing-body aircraft NPU-BWB-300 installed,the numerical simula-tion method based on Reynolds-averaged Navier–Stokes(RANS)equations is used to study the influence law of aerodynamic characteristic interference with the variation of Mach numbers and angles of attack.Moreover,the characteristics of ventral support interference for blended-wing-body aircraft and conventional aircraft are compared.The relevant mechanism of the generation and change of ventral support interfer-ence is revealed by employing analysis of the body surface pressure,the shock wave of the strut,and the separation area between the strut and the aircraft.The aerody-namic characteristic interference obtained from the numerical simulation is linearized based on the principle of the least square method.Afterward,a numerical simulation correction method of ventral support interference in the transonic-speed wind tunnel for the blended-wing-body aircraft is developed.Finally,the test results after the cor-rections of ventral support interferences in the transonic-speed wind tunnel for NPU-BWB-300 are obtained,which is significant for the evaluation of current aerodynamic performances and subsequent optimization designs.

关 键 词：Blended-wing-body Transonic-speed wind tunnel test Ventral sting interference Numerical simulation Aerodynamic characteristic 

分 类 号：V21[航空宇航科学与技术—航空宇航推进理论与工程]