Uncertainty evaluation of hypersonic aerodynamic heating in tunnel to tunnel tests using flat plate with a compression ramp
| Autor: | Hozumi, Koichi, Koyama, Tadao |
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| Jazyk: | japonština |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | 航空宇宙技術研究所特別資料: 航空宇宙数値シミュレーション技術シンポジウム2001論文集 = Special Publication of National Aerospace Laboratory: Proceedings of Aerospace Numerical Simulation Symposium 2001. 53:13-17 |
| ISSN: | 0289-260X |
| Popis: | To evaluate the data uncertainty attributed to hypersonic heat transfer measurement technique, cooperative heat flux measurement tests on the flat plates with compression ramps using Infra Red (IR) cameras are conducted in the NAL 1.27 m and ONERA/S4MA hypersonic wind tunnel at Mach number 10. Efforts to examine the main factors affecting data accuracy in IR thermography tests and to evaluate and minimize IR heat flux data uncertainty during the cooperative test campaign were described. The final tunnel-to-tunnel comparison results and comparisons of the heat flux with the flux obtained from other sensors showed that the test data are high quality of within 3 to 5 percent uncertainty. This result shows the adequacy of tunnel flow quality and testing techniques in both tunnels. Examination study in the present cooperation for the initial discrepancy between experimental and computational results showed the importance of understanding of flow phenomena or appropriate modeling of the physics, i.e., importance of interaction between computational and experimental fluid dynamics in CFD code validation study. 資料番号: AA0032819003 レポート番号: NAL SP-53 |
| Databáze: | OpenAIRE |
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