1. Applications of CFD 2008 Neil W. Bressloff N. W. Bressloff
COMPUTATIONAL ENGINEERING AND DESIGN GROUP

2. Introduction (fundamental CFD)
N. W. Bressloff

3. Introduction (aerospace design CFD)
N. W. Bressloff
Nacelle intake
Winglets
Flap track fairings
Wing fuselage fairing

4. Introduction (haemodynamics)
N. W. Bressloff

5. Introduction (CAD – mesh – analysis)
N. W. Bressloff

6. Introduction (CFD DSO strategy)
N. W. Bressloff
RSM Construct
RSM Evaluate
Search Using RSM
Best Design
Adequate ?
RSM Tuning
Build Data-Base
CFD
DoE
Initial Geometry …
Cluster Parallel Analysis

7. Aerospace design CFD (flap track fairing design)
N. W. Bressloff

8. Aerospace design CFD (response surface evolution)
N. W. Bressloff
Geometry parameterization NO
r2 converged?
Construct RSM
Reduce domain
Objective function converged?
Build data-base
DoE
CFD …
Search RSM
Construct EI surface
Search for optima
RSM Adequate?
Construct & search RSM
Optimum design
UPDATE STRATEGY
(skip if no updates)
YES
Update at optima
Update at optimum
Part converged CFD
Forrester, A. I. J., Bressloff, N. W. and Keane, A. J., 2006,
Computational Design Methods, United States Patent

9. Aerospace design CFD (wing design)
N. W. Bressloff
Forrester, A. I. J., Bressloff, N. W. and Keane, A. J., 2006, Optimisation using Surrogate Models and
Partially Converged Computational Fluid Dynamics Simulations, R. Soc. Proc. A. 462 pp

10. Aerospace design CFD
N. W. Bressloff

11. Aerospace design CFD (validation)
N. W. Bressloff
Potential flow solver VGK
Uses empirical data + calculation
No turbulence modelling
Easily able to compute airfoil pressure profiles
1 analysis ~ 2 seconds
RANS analysis using Fluent
Structured BL mesh
Unstructured external mesh
Total ~ mesh elements
Spalart Allmaras turbulence model
1 analysis ~ 5 minutes

12. Aerospace design CFD (advanced search strategy)
N. W. Bressloff
Analysis +
Optimization method
CFD
GEOMETRY
Parameterized model
Initial design variables
Optimum design
Design variables Iteration (geometry parameters)
Analysis +
Optimization method
CFD
GEOMETRY
To give required Cp profile
Initial design variables
Cp PROFILE
Parameterized model
Design variables Iteration (Cp parameters)
Optimum design
Inverse Design
Barrett, T. R., Bressloff, N. W. and Keane, A. J., 2006, Airfoil Shape Design and Optimization
Using Multi-Fidelity Analysis and Embedded Inverse Design, AIAA J., 44, 9,

13. Aerospace design CFD (lean burn injector)
N. W. Bressloff

14. Haemodynamics (background)
N. W. Bressloff

15. Haemodynamics (anatomy/geometry)
N. W. Bressloff

16. Haemodynamics How can this work be adapted for a four hour case study?
N. W. Bressloff
How can this work be adapted for a four hour case study?
Bressloff, N. W., 2007, Parametric shape exploration in the carotid artery bifurcation,
to appear, J. Biomech., 40,

17. N. W. Bressloff
Bhaskar, K. V., Bressloff, N. W., Nair, P. B. and Shearman, C. P., 2007, Predictive haemodynamics in a one-dimensional human carotid artery bifurcation. Part I: Application to stent design, IEEE Trans. Biom. Eng., 54, 5,

18. Haemodynamics (parametric geometry definition)
N. W. Bressloff
Automated design
Parametric geometry
Design table
Parameter selection
Surrogate models
DoEs
Regression vs interpolation
Exploration vs exploitation

19. Haemodynamics (shape variation)
N. W. Bressloff

20. Haemodynamics (analysis)
N. W. Bressloff

21. Haemodynamics (From the heart to the brain)
N. W. Bressloff

22. From the heart to the brain: carotid inlet profile
N. W. Bressloff