Search found 4 matches

by Marc.Winter
Tue Nov 05, 2019 11:25 am
Forum: AeroDyn Development
Topic: Dynamic Stall Theory and Implementation
Replies: 18
Views: 19612

Re: Dynamic Stall Theory and Implementation

Hi Emmanuel

yes, this answers my question that this factor is not a special property of rotational motion but generally applicable. Thank you!
by Marc.Winter
Mon Nov 04, 2019 11:53 am
Forum: AeroDyn Development
Topic: Dynamic Stall Theory and Implementation
Replies: 18
Views: 19612

Re: Dynamic Stall Theory and Implementation

Another question: in the FAST 8 documentation, the non-dimensional time constants T_alpha and T_q are multiplied by a factor of 0.75. The manual explains "Note that Leishman (2011) recommends the use of the factor 0.75 for Tα ( M ) and Tq ( M ) to account for three- dimensional effects not incl...
by Marc.Winter
Thu Oct 31, 2019 1:44 am
Forum: AeroDyn Development
Topic: Dynamic Stall Theory and Implementation
Replies: 18
Views: 19612

Re: Dynamic Stall Theory and Implementation

Thanks Jason. I will then try to compare the results for both approaches once I finished the implementation, provided I find the required model parameters.
by Marc.Winter
Wed Oct 30, 2019 8:04 am
Forum: AeroDyn Development
Topic: Dynamic Stall Theory and Implementation
Replies: 18
Views: 19612

Re: Dynamic Stall Theory and Implementation

In "The Unsteady Aerodynamics Module for FAST" (28th. February 2017), the onset of dyanmic stall is said to occur when the effective normal force coefficient C'_n exceeds a specific value C_n1 at leading edge separation. Since this is supposed to be used in HAWT applications, I assume this...

Go to advanced search