Response of hypersonic compression corner flow to upstream disturbances
نویسندگان
چکیده
Hypersonic flow over a two-dimensional compression corner is investigated using computational fluid dynamics and global resolvent analysis in this study, which continuation of the work done by Hao et al. ( J . Fluid Mech. , vol. 919, 2021, p. A4). The same baseline free-stream conditions with Mach number 7.7 unit Reynolds 4.2 × 10 6 m −1 are considered. ramp angles range from 0° (equivalent to flat plate) 12° (slightly below critical angle instability). During process, base evolves no separation incipient large separation. reveals that optimal response upstream disturbances localised near leading edge form steady streamwise streaks for all interaction strengths, arise transient growth flat-plate boundary layer due lift-up mechanism significantly grow Görtler instability. most amplified spanwise wavelength decreases as increased scales incoming boundary-layer thickness.
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2023
ISSN: ['0022-1120', '1469-7645']
DOI: https://doi.org/10.1017/jfm.2023.384