摘要
为了验证某型大展弦比电动飞机气动设计的合理性以及为飞行性能及品质计算提供数据,采用有限体积法离散求解三维可压雷诺平均Navier-Stokes方程,并选用Spalart-Allmaras湍流模型对该电动飞机流场进行CFD数值模拟。结果表明,该型电动飞机气动设计合理,巡航速度升阻比最高可达23,具有较高气动效率;通过CFD数值模拟得到了全机升力系数、阻力系数和升阻比。为了验证CFD计算结果,对该型电动飞机进行了缩比模型风洞实验,结果显示,CFD数值模拟法计算结果与风洞实验结果高度吻合,说明CFD计算结果准确。该方法可为大展弦比电动飞机气动设计提供指导。
In order to verify the rationality of the aerodynamic design of a large aspect ratio electric aircraft and provide data for the calculation of flight performance and quality,the finite volume method is used to discretely solve the three-dimensional compressible Reynolds-averaged Navier-Stokes equation and the Spalart-Allmaras turbulence model is selected for this electric aircraft.CFD numerical simulation of aircraft flow field.The results show that the aerodynamic design of this type of electric aircraft is reasonable,the lift-drag ratio at cruising speed can reach up to 23,and it has high aerodynamic efficiency;the lift coefficient,drag coefficient and lift-drag ratio of the whole aircraft are obtained through CFD numerical simulation.In order to verify the CFD calculation results,a scaled model wind tunnel experiment was carried out for this electric aircraft.The results show that the CFD numerical simulation method results are highly consistent with the wind tunnel experimental results,indicating that the CFD calculation results are accurate.This method can provide guidance for the aerodynamic design of large aspect ratio electric aircraft.
作者
张钧尧
佟刚
李亚东
王锋
周国庆
ZHANG Junyao;TONG Gang;LI Yadong;WANG Feng;ZHOU Guoqing(Liaoning Key Laboratory of General Aviation,Shenyang Aerospace University,110136 Shenyang,China;Flight Control Department,Shenyang Aircraft Design Institute,110035 Shenyang,China)
出处
《应用力学学报》
CAS
CSCD
北大核心
2022年第4期650-656,共7页
Chinese Journal of Applied Mechanics
基金
航空科学基金资助项目(No.201732540006)
辽宁省教育厅项目(No.L201622)
辽宁省自然科学基金指导计划资助项目(No.20180550824)
沈阳市科学技术计划资助项目(No.F16-205-07)
辽宁省科学技术基金资助项目(No.2017054706)。
关键词
电动飞机
气动特性
CFD数值模拟
风洞实验
升阻比
electric aircraft
aerodynamic characteristics
CFD numerical simulation
wind tunnel experiment
lift-drag ratio
