Abstract
Standard blade element momentum(BEM) codes
use Prandtl’s tip-loss correction which relies on simplified
vortex theory under the assumption of optimal
operating condition and no wake expansion. A
new tip-loss correction for implementation in BEM
codes has been developed using a lifting-line code
to account for the effect of wake expansion, roll-up
and distortion under any operating conditions. A
database of tip-loss corrections is established for further
use in BEM codes. Using this model a more
physical representation of the flow and hence a better
assessment of the performance of the turbine by
BEM codes is expected.
use Prandtl’s tip-loss correction which relies on simplified
vortex theory under the assumption of optimal
operating condition and no wake expansion. A
new tip-loss correction for implementation in BEM
codes has been developed using a lifting-line code
to account for the effect of wake expansion, roll-up
and distortion under any operating conditions. A
database of tip-loss corrections is established for further
use in BEM codes. Using this model a more
physical representation of the flow and hence a better
assessment of the performance of the turbine by
BEM codes is expected.
| Original language | English |
|---|---|
| Publication date | 2012 |
| Number of pages | 1 |
| Publication status | Published - 2012 |
| Event | EWEC 2012 - European Wind Energy Conference & Exhibition - Copenhagen, Denmark Duration: 16 Apr 2012 → 19 Apr 2012 http://events.ewea.org/annual2012/ |
Conference
| Conference | EWEC 2012 - European Wind Energy Conference & Exhibition |
|---|---|
| Country/Territory | Denmark |
| City | Copenhagen |
| Period | 16/04/2012 → 19/04/2012 |
| Internet address |
Keywords
- Tip-loss factor
- Tip-loss correction
- Vortex methods
- Improved BEM
- Bézier curve
- Wake deformation
- EWEA 2012