机动飞行数值模拟关键技术及初步验证

发布时间：2018-04-16 00:09

本文选题：机动飞行 + 动导数　；参考：《飞行力学》2017年01期

【摘要】：建立飞机机动飞行仿真及飞行性能评估能力是未来航空CFD发展的重要目标之一,为此,对机动飞行数值模拟的方法、原理、关键技术及潜在的应用方向进行了探讨。采用惯性系下任意拉格朗日-欧拉(ALE)形式描述的Navier-Stokes方程与机体运动学方程相耦合的方法,结合动网格技术建立了通用的机动飞行数值模拟应用框架。从微分方程形式的运动学方程出发,建立了与流动控制方程进行紧耦合和松耦合计算的两套计算方案,并提出了利用预报-校正技术提高耦合计算精度的方法。计算结果表明,所提方案合理、可行,为单自由度/多自由度机动飞行模拟、动导数分析等计算提供了可靠的新工具。
[Abstract]:The establishment of aircraft maneuvering flight simulation and flight performance evaluation capability is one of the important objectives of the future development of aeronautical CFD. Therefore, the methods, principles, key technologies and potential application directions of maneuvering flight numerical simulation are discussed.Using the coupling method of Navier-Stokes equation and kinematics equation of airframe described in any Lagrangian Eulerian form under inertial system, a general application framework for numerical simulation of maneuvering flight is established by combining dynamic grid technique.Based on the kinematics equations in the form of differential equations, two sets of calculation schemes for tight coupling and loosely coupled calculation with flow control equations are established, and a method to improve the accuracy of coupled calculation by using the predictor-correction technique is presented.The calculation results show that the proposed scheme is reasonable and feasible and provides a new reliable tool for the calculation of single / multi-degree-of-freedom maneuvering flight simulation and dynamic derivative analysis.
【作者单位】：西安航空计算技术研究所第七研究室;
【基金】：国家863计划资助项目(2012AA01A304) 航空科学基金资助(2015ZA31002)
【分类号】：V211.4

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