Prediction and delay of 2D-laminar boundary layer separation near leading edges.
| dc.contributor.advisor | Tuck, E. O. | en |
| dc.contributor.author | Dostovalova, Anna | en |
| dc.contributor.school | School of Mathematical Sciences | en |
| dc.date.issued | 2002 | en |
| dc.description.abstract | Boundary-layer flows near leading edges of generally curved obstacles have been studied for a long time. Apart from having many practical applications, the theory and approaches prevailing in this area stimulate development of a variety of computational tools and form a ground for testing them. The specific aim of this work is to study two-dimensional laminar boundary layer flows near the leading edges of airfoils and other elongated bodies, and to explore geometries for which boundary layer separation can be avoided. This class of problems is relevant to optimal design of wings, aircraft and projectile noses, laminar flow control methods and adaptive wing technology. One of the findings of this work suggests that local modifications to parabolic wing noses can yield up to 11% increase in the unseparated angle of attack. Another result obtained here is the set of shortest possible generalised elliptic noses of long symmetric bodies which allow unseparated flow. Methods adopted in this work are based on the combined use of numerically solved Prandtl equations written in Gortler variables, and inviscid solutions obtained semi-analytically by the conformal mapping method. The resulting technique being reliable, fast and computationally inexpensive, can complement or test the results obtained using a comprehensive CFD approach. | en |
| dc.description.dissertation | Thesis (Ph.D.)--School of Mathematical Sciences, 2002. | en |
| dc.format.extent | 954058 bytes | en |
| dc.format.extent | 102636 bytes | en |
| dc.format.mimetype | application/pdf | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.uri | http://hdl.handle.net/2440/37960 | |
| dc.language.iso | en | en |
| dc.provenance | This electronic version is made publicly available by the University of Adelaide in accordance with its open access policy for student theses. Copyright in this thesis remains with the author. This thesis may incorporate third party material which has been used by the author pursuant to Fair Dealing exception. If you are the author of this thesis and do not wish it to be made publicly available or If you are the owner of any included third party copyright material you wish to be removed from this electronic version, please complete the take down form located at: http://www.adelaide.edu.au/legals | |
| dc.subject | Boundary-layer flows, leading edges, airfoils, laminar boundary layer mathematical models | en |
| dc.title | Prediction and delay of 2D-laminar boundary layer separation near leading edges. | en |
| dc.type | Thesis | en |