基于CFD-CSD耦合的机翼跨音速颤振计算  

PREDICTING TRANSONIC FLUTTER OF WING USING CFD-CSD COUPLING METHOD

作　　者：张苏华[1] 赵永辉[1] 

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,江苏南京210016

出　　处：《计算机应用与软件》2012年第12期39-42,共4页Computer Applications and Software

基　　金：国家自然科学基金项目(10972100)

摘　　要：采用CFD-CSD耦合计算是预计机翼跨音速颤振特性的主流方法。以跨音速颤振国际标准模型AGARD 445.6机翼为研究对象,利用ANSYS.MFX多场耦合求解器对Euler方程进行求解来获得作用在机翼表面上的非定常气动力;对结构振动方程采用HHT方法直接数值积分以获得结构响应。通过CFD和CSD的耦合,计算了AGARD 445.6机翼的跨音速颤振特性。数值模拟结果与NASA风洞实验结果符合良好,表明利用ANSYS.MFX计算机翼跨音速颤振问题是可行的。CFD-CSD coupling method is the mainstream approach in predicting transonic flutter characteristics of wing. In this paper, we take international standard model of transonic flutter Wing AGARD 445.6 as the investigation object, and predict the unsteady transonic aero- dynamic forces acting on the surface of wing by using multi-field coupling solver ANSYS. MFX to solve Euler equations. For the structural vibration equations, direct numerical integral with HHT method is used to obtain structural responses. The transonic flutter characteristics of Wing AGARD 445.6 are computed with the coupling of CFD and CSD. Numerical simulation results agree well with those of the NASA wind tunnel test. This indicates that the use of the ANSYS. MFX to solve the problems transonic flutter of wing is feasible.

关 键 词：跨音速颤振 MFX多场求解器 HHT方法 AG-ARD 445 6机翼 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论] V215.3[自动化与计算机技术—计算机科学与技术]