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ADVENT

ADVENT. ADVanced EvolutioN Team. University of Sydney L. F. Gonz á lez E. J. Whitney K . Srinivas. Dassault Aviation- Pole-Scientifique Jacques P é riaux. Aim : To Develop advanced numerical tools and apply them to optimisation problems in aeronautics.

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ADVENT

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  1. ADVENT ADVanced EvolutioNTeam University of Sydney L. F. González E. J. Whitney K. Srinivas Dassault Aviation- Pole-Scientifique Jacques Périaux Aim :To Develop advanced numerical tools and apply them to optimisation problems in aeronautics.

  2. Three Element Aerofoil Euler Reconstruction. Problem Definition: • Rebuild from scratch the pressure distributions that approximately fit the target pressure distributions of a three element aerofoil set. • Flow Conditions - Euler Flow, Mach 0.2, Angle of Attack 17 deg • The flap and slat can move 30 deg CW or CCW and +/- 0.05 in x, y directions • The fitness function is the point by point pressure difference:

  3. CFD Solver • Flow is treated as two dimensional, viscous and is calculated using B. Mohammadi code NSC2ke • The solver uses unstructured mesh which are generated using bamg .[ref] • The computations stop when the 2-norm of the residual falls below a prescribed limit, in this case B Mohammadi "Fluid dynamics computation with NSC2KE : an user-guide : release 1.0" , INRIA (Natl Inst Res Comp & Ctl Sci, France), 94.

  4. Implementation Single Population EA (EA SP) Grid nbv 2500 Population size:405 Hierarchical Asynchronous Parallel EA (HAPEA)

  5. Results . Pressure Distribution

  6. Results. Candidate and Target Geometries

  7. Results: Example of Convergence. Mesh Adaptation : Mesh 15

  8. Mach Comparison best target

  9. Pressure Comparison best target

  10. Results 2 100 Function Evaluations

  11. Results 3 11000 Function Evaluations

  12. Results 4 20000 Function Evaluations

  13. Results….. Movie Search

  14. Work in Progress ….Three Element Aerofoil Navier – Stokes Mesh Adaptation Flow Conditions • - Adaptive unstructured mesh generator • - Navier-Stokes Flow • - Reynolds Number: 14,000,000 • - Mach 0.2 • - Angle of Attack: 10 deg

  15. Results Mesh Adaptation : Mesh 0

  16. Results 2 Mesh Adaptation : Mesh 8

  17. Results 3 Mesh Adaptation : Mesh 15

  18. Three Element Aerofoil Reconstruction Mesh Adaptation : Mesh 15

  19. Results….. Movie Adaptation

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