NASA桘CRM阻力预测模型的计算验证

摘要

Computational verification is carried out using the in-house unstructured grid flow solver UN-SMB in AVICARI for WB and WBT configurations of NASA-CRM model provided on the 4th AIAA drag prediction conference .Parameters like grid convergence characteristics ,lift-drag curves ,Reynolds number effect,down-wash effect and pressure distribution of the WBT configuration are analyzed with emphasis , and all the computational results are compared with those provided by ONERA on the conference .The a-nalysis results indicate a good agreement with ONERA′s results ,and the drag prediction accuracy of UN-SMB flow solver is verified to some extent .%采用自研的非结构网格解算器UNSMB 进行了AIAA第四届阻力会议提供的NASA-CRM 翼身组合体（ WB）以及翼身组合加平尾（ WBT）两种构型的计算验证。重点分析了WBT模型的网格收敛特性、升阻力曲线、雷诺数效应、下洗效应以及压力分布等，并把计算结果与阻力预测会议上ONERA的计算结果进行了对比。分析结果显示，非结构混合网格解算器的计算结果与ONERA的计算结果吻合度较好，同时在一定程度上验证与确认了解算器的阻力预测精度。