Large-Eddy Simulation of Mach 3.0 Flow Past a 24-Degree Compression Ramp

Abstract

Large-eddy simulation of the Mach 3.0 flow past a 24 deg compression ramp is performed by a high-order numerical method. Spatial derivatives are represented by a sixth-order compact stencil that is used in conjunction with a tenth-order non-dispersive filter. The scheme employs a time-implicit approximately-factored finite-difference algorithm, and applies Newton-like subiterations to achieve second-order temporal arid sixth-order spatial accuracy. In the region of the shock wave, compact differencing of convective fluxes is replaced locally by a third-order Roe upwind-biased evaluation. The Smagorinsky dynamic subgrid-scale model is incorporated in the simulation to account for the spatially under-resolved stresses and heat flux. Comparisons are made with experimental data in terms time-mean surface pressure and skin friction distributions, and with instantaneous surface pressure measurements.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADP013688

Entities

People

  • Donald P. Rizzetta
  • Miguel R. Visbal

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Boundary Layer
  • Coefficients
  • Computational Fluid Dynamics
  • Equations
  • Experimental Data
  • Flow
  • Fluid Flow
  • Grids
  • Large Eddy Simulation
  • Mach Number
  • Pressure Measurement
  • Reynolds Number
  • Shock Waves
  • Simulations
  • Skin Friction

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Computational Fluid Dynamics (CFD)
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)