Aerodynamic shape optimization of fan blades
| dc.contributor.author | Rogalsky, Timothy P. | en_US |
| dc.date.accessioned | 2007-05-18T12:16:41Z | |
| dc.date.available | 2007-05-18T12:16:41Z | |
| dc.date.issued | 1998-10-01T00:00:00Z | en_US |
| dc.degree.discipline | Mathematics | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | The purpose of this work is to develop and evaluate an inverse optimization algorithm which designs two-dimensional fan blade shapes. Given a prescribed pressure distribution and inlet and outlet flow angles, this design optimization technique finds the optimal fan blade shape, stagger angle, and pitch/chord ratio. The algorithm is coded into a completely self-contained C++ program. Its three main components are: a surface vorticity panel method flow solver, a Bezier curve surface definition routine, and an optimization method. Three different optimizers are tested and compared. A relatively new genetic algorithm, Differential Evolution, is determined to be the most effective. To demonstrate the abilities of the aerodynamic shape optimization algorithm, several fan blades are designed to exhibit a Liebeck pressure distribution. For each design, the optimal fan blade spacing is also found, verifying theoretically a claim that until now has been supported experimentally and with simple modelling. | en_US |
| dc.format.extent | 6244728 bytes | |
| dc.format.extent | 184 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.format.mimetype | text/plain | |
| dc.identifier.uri | http://hdl.handle.net/1993/1676 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.title | Aerodynamic shape optimization of fan blades | en_US |
| dc.type | master thesis | en_US |