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

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

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

4. 4 Implementation Population size: 405 Grid nbv 2500 Single Population EA (EA SP) Hierarchical Asynchronous Parallel EA (HAPEA) Population size: 40 Viscous: Grid nbv 2500 Viscous: Grid nbv 2000 Viscous: Grid nbv 1500

5. 5 Results. Pressure Distribution

6. 6 Results. Candidate and Target Geometries

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

8. 8 Mach Comparison besttarget

9. 9 Pressure Comparison besttarget

10. 10 Results 2 100 Function Evaluations

11. 11 Results 3 11000 Function Evaluations

12. 12 Results 4 20000 Function Evaluations

13. 13 Results….. Movie Search

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

15. 15 Results Mesh Adaptation : Mesh 0

16. 16 Results 2 Mesh Adaptation : Mesh 8

17. 17 Results 3 Mesh Adaptation : Mesh 15

18. 18 Three Element Aerofoil Reconstruction Mesh Adaptation : Mesh 15

19. 19 Results….. Movie Adaptation