Three-Dimensional Rainbow Schlieren Measurements in Underexpanded Sonic Jets from Axisymmetric Convergent Nozzles
文献类型：期刊论文
| 作者 | Takano, H., Kamikihara, D., Ono, D., Nakao, S., Yamamoto, H. and Miyazato, Y. |
| 出版日期 | 2016 |
| 关键词 | Rainbow schlieren Computer tomography Convergent nozzle Sonic jet supersonic jets deflectometry Thermodynamics Engineering |
| 中文摘要 | The application of an efficient flow control system on helicopter rotor blades may lead to improved aerodynamic performance. Recently, our invention of Rod Vortex Generators (RVGs) has been analyzed for helicopter rotor blades in hover with success. As a step forward, the study has been extended to forward flight conditions. For this reason, a validation of the numerical modelling for a reference helicopter rotor (without flow control) is needed. The article presents a study of the flow-field of the AH-1G helicopter rotor in low-, medium- and high-speed forward flight. The CFD code FLOWer from DLR has proven to be a suitable tool for the aerodynamic analysis of the two-bladed rotor without any artificial wake modelling. It solves the URANS equations with LEA (Linear Explicit Algebraic stress) k-omega model using the chimera overlapping grids technique. Validation of the numerical model uses comparison with the detailed flight test data gathered by Cross J. L. and Watts M. E. during the Tip Aerodynamics and Acoustics Test (TAAT) conducted at NASA in 1981. Satisfactory agreements for all speed regimes and a presence of significant flow separation in high-speed forward flight suggest a possible benefit from the future implementation of RVGs. The numerical results based on the URANS approach are presented not only for a popular, low-speed case commonly used in rotorcraft community for CFD codes validation but preferably for medium- and high-speed test conditions that have not been published to date. |
| 源URL | [http://ir.etp.ac.cn/handle/311046/113101]  |
| 专题 | 工程热物理研究所_Journal of Thermal Science_期刊论文 |
| 作者单位 | [Taler, Dawid] Cracow Univ Technol, Fac Environm Engn, Ul Warszawska 24, PL-31155 Krakow, Poland. Cracow Univ Technol, Fac Mech Engn, Al Jana Pawla 2 37, PL-31864 Krakow, Poland. |
| 推荐引用方式 GB/T 7714 | Takano, H., Kamikihara, D., Ono, D., Nakao, S., Yamamoto, H. and Miyazato, Y.. Three-Dimensional Rainbow Schlieren Measurements in Underexpanded Sonic Jets from Axisymmetric Convergent Nozzles[J],2016. |
| APA | Takano, H., Kamikihara, D., Ono, D., Nakao, S., Yamamoto, H. and Miyazato, Y..(2016).Three-Dimensional Rainbow Schlieren Measurements in Underexpanded Sonic Jets from Axisymmetric Convergent Nozzles.. |
| MLA | Takano, H., Kamikihara, D., Ono, D., Nakao, S., Yamamoto, H. and Miyazato, Y.."Three-Dimensional Rainbow Schlieren Measurements in Underexpanded Sonic Jets from Axisymmetric Convergent Nozzles".(2016). |
入库方式： OAI收割
来源：工程热物理研究所
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