Reducing Bottlenecks in the CAD-to-Mesh-to-Solution Cycle Time to Allow CFD to Participate in Design

[+] Author and Article Information
W. N. Dawes, P. C. Dhanasekaran, A. A. J. Demargne, W. P. Kellar, A. M. Savill

CFD Laboratory and Whittle Laboratory, Department of Engineering, University of Cambridge, Cambridge, UK

J. Turbomach 123(3), 552-557 (Feb 01, 2000) (6 pages) doi:10.1115/1.1370162 History: Received February 01, 2000
Copyright © 2001 by ASME
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Birkby, P., Cant, R. S., Dawes, W. N., Demargne, A. A. J., Dhanasekaran, P. C., Kellar, W. P., Rycroft, N. C., Savill, A. M., Eggels, R. L. G. M., and Jennions, I. K., 2000, “CFD Analysis of a Complete Industrial Lean Pre-mixed Gas Turbine Combustor,” ASME Paper No. 2000-GT-131.
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Desirable attributes in a useful CAD-mesh-CFD system
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Fuel injector holes from typical combustor geometry
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Inlet aerofoil section from typical combustor geometry
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Typical CAD surface representation errors together with “healed” result
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“March and grab”: iterative insertion of surface triangles to guarantee surface integrity
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Surface mesh for the complete combustion chamber
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Predicted and measured total pressures at exit from a compressor with and without underhub leakage
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Zoom view near the LE of a compressor with underhub leakage
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Parallel speedup of unstructured flow solver on a Hitachi MPP
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A “sliver” formed from nearly co-planar nodes with compact circumsphere
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Cold flow solution showing velocity vectors and pressure contours, subsynchronous idle operating point



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