外挂物气动特性的数值模拟和风洞试验  

Numerical Simulation and Wind Tunnel Test Study on Aerodynamic Characteristics of External Store

作　　者：岳春霞 刘伟 杨全 韩晓微[2] 岳晓宁[3] YUE Chunxia;LIU Wei;YANG Quan;HAN Xiaowei;YUE Xiaoning(Xifei Design Institute,AVIC Xi'an Aircraft Industry Group Co.,Ltd.,Xi'an 710089,China;Institute of Science and Technology Innovation,Shenyang 110044,China;Normal School,Shenyang University,Shenyang 110044,China)

机构地区：[1]中航西安飞机工业集团股份有限公司西飞设计院,陕西西安710089 [2]沈阳大学科技创新研究院,辽宁沈阳110044 [3]沈阳大学师范学院,辽宁沈阳110044

出　　处：《沈阳大学学报（自然科学版）》2024年第3期185-191,共7页Journal of Shenyang University：Natural Science

摘　　要：根据外挂物高、低速风洞测压试验数据和CFD数值仿真模拟,获得了左右侧机翼下外挂物的气动特性。基于“三层次”网格生成技术,利用有限体积法求解带有湍流模型的Navier-Stokes方程,对外挂物扰流流场进行数值模拟,结合高、低速测压风洞试验,验证了研究手段的有效性,分析了不同气动力系数随攻角、侧滑角及马赫数的变化情况。结果表明:高、低速下外挂物升力系数受攻角影响的规律一致;在正侧滑时,机身的遮挡对右机翼下外挂物的侧向力系数和偏航力矩系数的影响较大。Based on the high/low speed wind tunnel pressure test and CFD numerical simulation,the aerodynamic effects of the external store under the left and right wings were obtained.The finite volume method was used to solve the N-S equations with turbulence models based on the three-level grid generation technology and to simulate the turbulent flow field of the external store.The effectiveness of research methods was validated and the variation of aerodynamic coefficients with the angle of attack,side slip angle,and Mach was analyzed by combining the high/low speed wind tunnel pressure test.The results showed that the law of the lift coefficient of external store being affected by the angle of attack was consistent at high and low speeds;when the side slip angle was positive,the obstruction of the fuselage had a significant impact on the lateral force coefficient and yaw moment coefficient of the external store under the right wing.

关 键 词：外挂物 气动特性 数值模拟 风洞试验 压力分布 

分 类 号：V211.8[航空宇航科学与技术—航空宇航推进理论与工程]