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Computation of three-dimensional supersonic turbulent flows over wrap-around fin projectiles using personal computers

Fazeli, H ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2005
  3. Abstract:
  4. The three-dimensional supersonic turbulent flows over wrap-around fin missiles have been computed using the Thin Layer Navier-Stokes (TLNS) equations to reduce the computational efforts compared to those of the Full Navier-Stokes (FNS) equations. In this research, the missile configuration is divided into multi regions to enable fluid flow simulation using Personal Computers (PC). It also makes it possible to use a different number of nodes and distribution of grids in each region to enhance the accuracy. The Thin Layer Navier-Stokes equations in the generalized coordinate system were solved using an efficient, implicit, finite-difference factored algorithm of the Beam and Warming. For the turbulent flow field computations, the well-known isotropic two-layer algebraic eddy viscosity Baldwin-Lomax model was used. The computations were performed for supersonic turbulent flows over wrap-around fin configurations for free stream Mach numbers, M∞ = 1.9 - 2.86. Predicted roll moment and longitudinal aerodynamic coefficients were compared with the experimental data at various angles of attack. The computational results are in good agreement with experimental data. © Sharif University of Technology
  5. Keywords:
  6. Aerodynamics ; Algorithms ; Finite difference method ; Flow of fluids ; Missiles ; Navier Stokes equations ; Personal computers ; Projectiles ; Three dimensional ; Turbulent flow ; Viscosity ; Supersonic turbulent flow ; Thin layer Navier Stokes (TLNS) equations ; Flow around object ; Navier-Stokes equations ; Supersonic flow
  7. Source: Scientia Iranica ; Volume 12, Issue 2 , 2005 , Pages 217-228 ; 10263098 (ISSN)
  8. URL: http://scientiairanica.sharif.edu/article_2485.html