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Efficient Coupled Fluid-Structure Interaction ApproachFor Analysis of Rotors in Forward Flight

机译：高效耦合流固耦合方法分析前向旋翼

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摘要

A coupled fluid-structure interaction approach hasrnbeen developed for the efficient prediction of aerodynamic loads on rotor blades in forward flight.rnThe aerodynamic computation is done by a Navier-Stokesrnsolver modeling the viscous flow over the bladernand the near wake. The structural dynamicsrncomputation is carried out by means of a finite-elementrnanalysis of the blade represented as a beam. Differentrnapproaches for communication between the structuralrndynamic and fluid dynamic solvers have beenrnimplemented. A generalized deforming mesh modulernhas been developed to account for the blade motion andrnelastic deformations. A free self-induced wake modelrnis used to model the tip vortex effects once the vortexrnleaves the resolved CFD domain. This approach hasrnbeen used to compute the blade aerodynamic loads andrnstructural response from first principles, whilernincluding the influences of the elastic deformation andrnthe blade-vortex interactions. A four-bladed UH-60Arnrotor at a high advance ratio has been studied, and the results compared with flight test data. Preliminaryrnresults for high speed forward flight are presented.
机译：已经开发出一种耦合的流固耦合方法，以有效地预测前向飞行中转子叶片上的空气动力载荷。空气动力学计算是通过Navier-Stokesrnsolver对叶片上的粘性流和近尾流建模的。通过对表示为梁的叶片的有限元分析来进行结构动力学计算。已经实现了用于结构动力和流体动力求解器之间通信的不同方法。已经开发出广义变形网格模块来解决叶片运动和弹性变形。一旦涡旋释放了解析的CFD域，就会使用一个免费的自感应尾流建模器来模拟尖端涡旋效应。该方法已被用于根据第一原理来计算叶片的空气动力载荷和结构响应，同时包括弹性变形的影响和叶片-涡流的相互作用。研究了高推进比的四叶片UH-60Arnrotor，并将其结果与飞行测试数据进行了比较。介绍了高速向前飞行的初步结果。

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  • 会议地点 San Francisco CA(US)
  • 作者

    Sujeet Phanse; Bruce Charles; Lakshmi N. Sankar;

  • 作者单位

    School of Aerospace EngineeringrnGeorgia Institute of TechnologyrnAtlanta, GA 30332;

    Boeing Helicopter Division, Mesa, AZ;

    School of Aerospace EngineeringrnGeorgia Institute of TechnologyrnAtlanta, GA 30332;

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  • 正文语种 eng
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