Unsteady Navier-Stokes simulation of the canard-wing-body ramp motion

Eugene L. Tu, Shigeru Obayashi, Guru P. Guruswamy

Research output: Contribution to conferencePaperpeer-review

3 Citations (Scopus)


A time-accurate thin-layer Navier-Stokes simulation of the unsteady flowfield is performed for a typical canard-wing-body configuration undergoing ramp motions. The computations are made at a transonic Mach number of 0.90 and for ramp angles from 0 to 15 degrees. Accuracy is determined by comparisons with steady-state experimental data and with spatial and time-step refinement studies. During the ramp. motion, the computational results show improved dynamic lift performance and a strong canard-wing interaction for the canard-on configuration. Formation of the canard leading-edge vortex is inhibited in the early stages of the ramp motion. An analysis performed on the transient flowfield after the ramp motion ends shows that the canard vortex rapidly gains strength and vortex breakdown eventually occurs. These characteristics of the canard vortex have significant iufluences on wing performance.

Original languageEnglish
Publication statusPublished - 1993
Externally publishedYes
EventAIAA 23rd Fluid Dynamics, Plasmadynamics, and Lasers Conference, 1993 - Orlando, United States
Duration: 1993 Jul 61993 Jul 9


OtherAIAA 23rd Fluid Dynamics, Plasmadynamics, and Lasers Conference, 1993
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Aerospace Engineering
  • Engineering (miscellaneous)


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