Optimization of Low-Drag Bodies of Revolution with Turbulent Boundary Layers.
Abstract
Numerical optimization methods are used to search for minimum-drag bodies of revolution in incompressible flow with all-turbulent boundary layers. Available methods for potential flow, boundary layer, drag, and optimization calculations are used. Results obtained with an empirical drag formula give a low-fineness ratio body with significantly lower drag than for traditional shapes. However, when the drag method of Nakayama and Patel is used as a representative state-of-the-art capability, results show that the drag is insensitive to perturbations from the shape of traditional bodies, and only a small reduction in drag is obtained. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1977
- Accession Number
- ADA041313
Entities
People
- E. M. Murman
- Edward W. Geller
- John E. Mercer
- Ralph W. Metcalfe