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vawt "blade" and "dms" modules
Total newbie here, plus way too many years out of college, please be kind. Just completed some basics on my first vawt and have a zillion questions, but here I ask only the following:
- In the blade design module the hub radius seems inaccessible. Is it set at 0.2m radius or something else? also, how does the “optimize” option work?
- Is there a user guide for the DMS module? If not, can someone help with the following: The rotor module has a Cp vs tip speed chart, It often goes negative at high tip speeds. My thinking is that for a self starting turbine Cp must be positive and high enough to overcome the various losses of the generator system, but when I get the power charts from the other two modules of DSM (Char dms and turbine dms), I see positive power at startup even when the turbine module gives startup tip speed high enough for the Cp to go negative. How can that be?
- Attached please find my first model, processed up to the DMS module. ANY comments would be welcome.
Thanks in advance,
Demitri Economou
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