Experimental and numerical investigation of shock wave/boundary layer interactions induced by curved back-swept compression ramp

Chen, Liang; Zhang, Yue; Xue, Hong-chao; Tan, Hui-jun; Wang, Zi-yun; Yu, Hang

doi:10.1016/j.ast.2023.108639

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…Further details regarding the boundary conditions can be found in Figure 2. This study adopts boundary condition settings similar to those used by Chen [19], which are widely recognized and validated in the field of hypersonic flow simulations. These settings are selected based on their proven effectiveness in accurately modeling the thermal and flow characteristics of hypersonic vehicles as documented in previous research and standard CFD practices.…”

Section: Case Validationmentioning

confidence: 99%

The Effects of Compression Direction on the Performance of a Two-Dimensional Inlet Mounted on the Aft Body

Chen,

Fan,

Xiong

2024

Applied Sciences

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The aft-body mounted inlet of a hypersonic vehicle has garnered attention for its potential to shorten the propulsion system. This study aims to explore the influence of compression direction on the performance of the hypersonic inlet attached to the vehicle’s aft body. To achieve this objective, a simplified, integrated model of the body and two-dimensional inlet was developed and evaluated using numerical simulation techniques. The study conducted a comparative analysis of the overall and starting performance between inverted and normal inlet layouts while ensuring uniformity in inlet configuration and installation location. The results indicated that the inverted layout surpassed the normal layout in terms of airflow capture capabilities, with an 8.24% higher mass flow rate. However, the inverted inlet layout exhibited an 11.46% reduction in total pressure recovery performance compared to the normal layout. Additionally, the study found that the inverted inlet layout demonstrated a self-starting Mach number 1.62 lower than that of the normal inlet layout. This difference stemmed primarily from the pressure gradient on the body surface induced by the incident shock wave of the inverted inlet, which enhanced starting performance by eliminating low-energy flow near the wall.

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Section: Case Validationmentioning

confidence: 99%

The Effects of Compression Direction on the Performance of a Two-Dimensional Inlet Mounted on the Aft Body

Chen,

Fan,

Xiong

2024

Applied Sciences

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Görtler Vortices in the Shock Wave/Boundary-Layer Interaction Induced by Curved Swept Compression Ramp

Chen,

Zhang,

Wang

et al. 2024

Aerospace

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This study builds on previous research into the basic flow structure of a separated curved swept compression ramp shock wave/turbulence boundary layer interaction (CSCR-SWBLI) at the leading edge of an inward-turning inlet. We employ the ice-cluster-based planar laser scattering (IC-PLS) technique, which integrates multiple observation directions and positions, to experimentally investigate a physical model with typical parameter states at a freestream Mach number of 2.85. This study captures the fine structure of some sections of the flow field and identifies the presence of Görtler vortices (GVs) in the CSCR-SWBLI. It is observed that due to the characteristics of variable sweep angle, variable intensity interaction, and centrifugal force, GVs exhibit strong three-dimensional characteristics in the curved section. Additionally, their position is not fixed in the spanwise direction, demonstrating strong intermittence. As the vortices develop downstream, their size gradually increases while the number decreases, always corresponding to the local boundary layer thickness. When considering the effects of coupling of bilateral walls, it is noted that the main difference between double-sided coupling and single-sided uncoupling conditions is the presence of a large-scale vortex in the central plane and an odd number of GVs in the double-sided model. Finally, the existence of GVs in CSCR-SWBLI is verified through the classical determine criteria Görtler number (GT) and Floryan number (F) decision basis.

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Experimental and numerical investigation of shock wave/boundary layer interactions induced by curved back-swept compression ramp

Cited by 2 publications

References 22 publications

The Effects of Compression Direction on the Performance of a Two-Dimensional Inlet Mounted on the Aft Body

The Effects of Compression Direction on the Performance of a Two-Dimensional Inlet Mounted on the Aft Body

Görtler Vortices in the Shock Wave/Boundary-Layer Interaction Induced by Curved Swept Compression Ramp

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