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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers >Aeroelastic analysis of helicopter rotors using computational fluid dynamics/comprehensive analysis loose coupling model
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Aeroelastic analysis of helicopter rotors using computational fluid dynamics/comprehensive analysis loose coupling model

机译:使用计算流体力学/综合分析松耦合模型对直升机旋翼进行气动弹性分析

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摘要

A new rotor computational fluid dynamics(CFD)/comprehensive analysis (CA) loose coupling model is presented in this paper. In the coupled analysis, moderate deflection beam theory is employed to obtain the blade motions, while a high fidelity, overset grid based N-S solver is adopted to compute airloads. In order to improve the computation efficiency, the delta method is used to integrate the airloads computed by CFD analysis into the CA module. Based on the aforementioned method, the airloads at two challenging level-flight conditions of the UH-60A Blackhawk helicopter are investigated, and the simulated results show that the CFD/CA coupling model developed in this paper is efficient and accurate in capturing the rotor unsteady airloads.
机译:提出了一种新的转子计算流体动力学(CFD)/综合分析(CA)松耦合模型。在耦合分析中,采用适度偏转梁理论来获得叶片运动,而采用高保真,基于覆盖网格的N-S求解器来计算空气载荷。为了提高计算效率,使用增量法将通过CFD分析计算出的空载量整合到CA模块中。基于上述方法,研究了UH-60A黑鹰直升机在两个具有挑战性的水平飞行条件下的空载,仿真结果表明,本文开发的CFD / CA耦合模型能够有效,准确地捕获旋翼不稳定情况。空载。

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