A high-order numerical simulation of the Common Research Model (CRM) wing-body test model is presented by solving Reynolds-Averaged Navier-Stokes (RANS) equations with the fifth-order Weighted Compact Nonlinear Scheme (WCNS) and multi-block 1-to-1 structured grid.The test model and initial conditions are obtained from the sixth AIAA Drag Prediction Workshop (DPW Ⅵ).The purpose of present work is to assess the influence of the static aeroelastic deformation and support system on the numerical results of the CRM wing-body configuration by using high-order numerical method.Compared to the numerical results of the "rigid" CRM wing-body configuration and the experimental data from the NASA National Transonic Facility (NTF) wind tunnel,the high-order numerical results show that for 3.0° angle of attack,the static aeroelastic deformation moves the shock wave upward on the wing upper surface,and decreases the negative pressure before the shock wave;the support system moves the shock wave further upward and changes the flow structure near the wing tip.The main reason for the lift curve break at 4.0° angle of attack is that the computational model does not include the support system.The numerical results with the addition of the static aeroelastic deformation and support system into the calculation model match the experimental results more closely.%通过求解雷诺平均Navier Stokes(RANS)方程,采用5阶空间离散精度的WCNS和多块对接结构网格技术,开展了CRM翼身组合体风洞试验模型的高阶精度数值模拟,计算构型和计算状态来自AIAA第6届阻力预测研讨会(DPWⅥ).主要目的是采用高阶精度方法,评估静气动弹性变形和模型支撑装置对CRM翼身组合体数值模拟结果的影响.通过与刚性外形的计算结果和NASA NTF风洞试验结果的对比,高阶精度数值模拟结果表明:迎角为3.0°时,静气动弹性变形使得机翼上表面激波位置前移并显著降低了外侧机翼上表面激波位置前的负压;迎角为3.0°时,模型支撑装置使得机翼上表面激波位置进一步前移,并导致翼梢处机翼上表面流动结构发生变化;迎角为4.0°时,计算模型中没有包含模型支撑装置是导致升力系数下降的主要原因;计算模型中包含机翼静气动弹性变形和模型支撑装置的数值模拟结果更加接近试验结果.
展开▼
