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首页> 外文会议>ASME Turbo Expo: Turbomachinery Technical Conference and Exposition >VALIDATION OF CFD ANALYSES RESULTS WITH INSTRUMENTED GROUND AND FLIGHT TESTS MEASUREMENTS OF AN AEROBATIC TURBOPROP AIRCRAFT INLET
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VALIDATION OF CFD ANALYSES RESULTS WITH INSTRUMENTED GROUND AND FLIGHT TESTS MEASUREMENTS OF AN AEROBATIC TURBOPROP AIRCRAFT INLET

机译：验证CFD分析结果用仪表的地面和飞行试验测量有氧机涡轮螺旋桨飞机入口的测量

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With the onset of affordable high-performance computing and cloud computing technologies, numerical methods like computational fluid dynamics and the finite element method are spreading to all the branches of industry. The ability to perform such analyses allows engineers to speed up development and refine designs even in early stages of development without the need for expensive experimental setups. However, it is desirable to build up confidence in these results by experimental validation. GE Aviation Czech has been extensively using a variety of CFD tools to predict flow behavior in the field of internal aerodynamics - especially for design of compressor and turbine stages, combustion chambers, inlet and exhaust systems. Development of a new aerobatic engine prototype and its installation is currently under way. A series of back-to-back analyses conducted to verify performance of the aerobatic inlet and compare it with a reference commuter engine installation. The results were presented in article "GT2018-76398 Analysis and Testing of an Aerobatic Turboprop Aircraft Inlet". A variety of critical parameters such as ram factor, pressure losses, inlet heating, and engine inlet pressure and temperature distortions were investigated. These parameters affect engine performance, operability, and compressor stability. Afterward, a unique instrumentation, data acquisition chain, and test program was developed in cooperation with the airframer. This made it possible to record all of the required parameters during ground and flight tests, including basic aerobatic maneuvers. The recorded data was then used for validation of performed CFD analyses with boundary conditions matching the conditions of ground and flight tests. Confidence in CFD results backed up by well-matched test data allows to conduct future design changes without the need to perform additional expensive experimental trials.
机译：用得起高性能计算和云计算技术的发作，如计算流体力学和有限元法的数值方法蔓延到行业的所有分支。进行此类分析的能力，使工程师能够加快发展，细化发展的早期阶段，即使设计，而不需要昂贵的实验装置。然而，最好是建立在这些结果通过实验验证的信心。 GE航空捷克已经被广泛地使用各种工具CFD预测流动行为在内部空气动力学领域 - 尤其是对压缩机和涡轮机级，燃烧室，进气和排气系统的设计。新的特技引擎的原型及其安装的开发目前正在进行之中。一系列后端到背面的分析进行验证特技入口的性能，并将其与参考通勤发动机安装比较。结果在文章“GT2018-76398分析和特技涡桨飞机进气道试验”作了介绍。各种关键参数，诸如RAM因子，压力损失，入口加热，和发动机进气口的压力和温度的扭曲的影响。这些参数会影响发动机的性能，可操作性和稳定性的压缩机。随后，独特的仪表，数据采集链，测试程序与飞机制造商合作开发。这使我们能够在地面和飞行试验，包括基本的特技飞行动作记录所有必要的参数。然后，将记录的数据被用于具有匹配的地面和飞行试验条件边界条件进行CFD分析的验证。信心CFD结果后盾旗鼓相当的测试数据可以在不进行额外的昂贵的实验性试验的需要进行以后的设计更改。

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