Abstract
The buffet onset boundary is associated with a change in stability of the flow solution. The buffet onset boundary has been computed for a NACA 0012 aerofoil using a modified bifurcation tracking method. The algorithm combines the projection aspect of the Recursive Projection Method with two different direct bifurcation tracking methods. This considerably reduces the cost of the bifurcation tracking methods by solving for the bifurcation point on a small subspace of the system containing only the least stable dynamics. The method has been extended to allow the boundary to be computed as geometrical parameters, camber and thickness, are changed. This enables rapid evaluation of the effect of different aerofoil designs on the boundary. Results are presented comparing the full bifurcation tracking methods to their projected equivalent and show that although the projected methods lack the numerical accuracy of the full counterpart, the trends of the boundaries agree well.
Original language | English |
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Pages (from-to) | 28-42 |
Number of pages | 15 |
Journal | Computers and Fluids |
Volume | 157 |
Early online date | 5 Aug 2017 |
DOIs | |
Publication status | Published - 3 Nov 2017 |
Bibliographical note
Document is post-print not pre-print, completed in a LaTex template.Keywords
- Buffet
- Bifurcation
- Continuation
- Flow stability
- Navier-Stokes
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Dive into the research topics of 'Development of an efficient bifurcation tracking method'. Together they form a unique fingerprint.Profiles
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Professor Ann L Gaitonde
- School of Civil, Aerospace and Design Engineering - Professor of Aerodynamics
- Fluid and Aerodynamics
Person: Academic , Member
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Professor Dorian P Jones
- School of Civil, Aerospace and Design Engineering - Professor of Aerodynamics
- Fluid and Aerodynamics
Person: Academic , Member