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April 18, 2026Journal of Fluid Mechanics

Analysis and modelling of unsteady oblique shock trains under asymmetric incoming boundary layers

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Authors

HYHang YuHTHui-jun TanYZYue Zhang

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Overview

Experimental study investigates unsteady oblique shock trains in ducts, suggesting new prediction methods.

Key Points

  • To analyze the characteristics of unsteady oblique shock trains in a rectangular duct under asymmetric boundary layers.
  • Conducted experiments using high-speed schlieren techniques.
  • Performed high-frequency pressure measurements within a duct setting.
  • Derived and validated a new amplitude prediction model for unsteady oblique shock trains.
  • Oblique shock trains lean towards the thin-boundary-layer side under asymmetric conditions.
  • Shock trains exhibit periodic movement and shape changes under downstream excitation.
  • Pressure rise distribution along the thick-boundary-layer side is nearly linear.
  • The existing amplitude prediction model for normal shock trains is not applicable to the oblique case.

Cite This Study

Yu et al. (2026) studied this question.

synapsesocial.com/papers/69e320e740886becb6540149https://doi.org/10.1017/jfm.2026.11363
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