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首页> 外文期刊>Journal of the American Helicopter Society >Validation of Higher-Order Interactional Aerodynamics Simulations on Full Helicopter Configurations
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Validation of Higher-Order Interactional Aerodynamics Simulations on Full Helicopter Configurations

机译：全直升机配置的高阶相互作用空气动力学模拟的验证

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Time-accurate numerical predictions of the interactional aerodynamics between NASA's generic ROBIN fuselage and its four-bladed rotor were performed using the recently developed Reynolds-averaged Navier-Stokes solver HAMSTR. Two stencil-based reconstruction schemes (MUSCL, WENO), a second-order temporal accuracy, and the Spalart-Allmaras turbulence model were used. Three-dimensional volume meshes were created in a robust manner from two-dimensional unstructured surface grids using Hamiltonian paths and strands on nearbody domains. Grid connectivity was established between nearbody and background domains in an overset fashion. Two previously researched operational conditions were reproduced, i.e., a near-hover case and a medium-speed forward flight case at an advance ratio of 0.151. The results were compared with various experimental and numerical references and were found to be in good agreement with both. The comparison included the analysis of the rotor wake structure, tip-vortex trajectories, steady and dynamic fuselage pressure distributions in longitudinal and lateral directions, and rotor inflow predictions.
机译：使用最近开发的雷诺平均Navier-Stokes求解器HAMSTR对NASA的通用ROBIN机身与其四叶形转子之间的相互作用空气动力学进行了时间精确的数值预测。使用了两种基于模具的重建方案（MUSCL，WENO），二阶时间精度和Spalart-Allmaras湍流模型。使用哈密顿路径和近体域上的线，从二维非结构化表面网格以鲁棒的方式创建三维体网格。网格连接以过分的方式在近身域和背景域之间建立。复制了两个先前研究过的操作条件，即，近空飞行情况和中速向前飞行情况，前进比为0.151。将结果与各种实验和数值参考进行了比较，发现两者具有很好的一致性。比较包括对转子尾流结构，叶尖涡旋轨迹，机身在纵向和横向的稳态和动态压力分布以及转子流入预测的分析。

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