@inproceedings{oai:jaxa.repo.nii.ac.jp:00004732, author = {大道, 勇哉 and 鈴木, 宏二郎 and Omichi, Yuya and Suzuki, Kojiro}, book = {宇宙航空研究開発機構特別資料: 第42回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2010 論文集, JAXA Special Publication: Proceedings of 42nd Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2010}, month = {Feb}, note = {第42回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2010 (2010年6月24日-25日. 米子コンベンションセンター BiG SHiP), 42nd Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2010 (June 24-25, 2010. Yonago Convention Center BiG SHiP), Yonago, Tottori Japan, At the development of hypersonic vehicles, it is quite important to estimate the aerodynamic heating with high accuracy, because hypersonic vehicles are exposed to high temperature and/or high pressure flow behind a strong shock wave formed over the body. A hypersonic vehicle often has small irregularities on its body surface. For example, the gaps between the tiles for the thermal protection may work as the surface roughness. Such irregularity on the body surface causes local peaks of aerodynamic heating. In addition, it may enhance laminar-turbulent transition in the boundary layer flow. In this study, we numerically analyze the effect of the surface roughness by the presence of narrow channels opening flush with a flat plate in a hypersonic flow at Mach number 7. To represent the tile gap over a hypersonic vehicle, the H-form channel layout composed of one longitudinal and two lateral channels is considered. The numerical simulation has been conducted by solving the three-dimensional laminar Navier-Stokes equations with SLAU scheme. The results show that a shock wave appears and the aerodynamic heating is significantly augmented near the downstream edge of channels. Such heating augmentation strongly depends on geometric and flow parameters, such as, the width of channels or angle of attack., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0064967025, レポート番号: JAXA-SP-10-012}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {溝付き平板上の極超音速流れに関する研究}, volume = {JAXA-SP-10-012}, year = {2011} }