Is it possible to model a turbine in Bladed that is in process of being assembled? Possible scenarios:
- Tower only
- Nacelle and hub but no blades
- One or two blades installed
For the "Tower Only" scenario you should follow the steps in the Knowledge Base article "Running a simulation without the RNA". For the "RNA without blades", the same article applies but just ignore the three steps labelled "Nacelle screen", "Hub screen" and "Rotor screen".
To model a partially-constructed turbine with one or two blades installed: You can specify fewer than 3 blades in the Rotor screen and the simulation will run ok. This is easy for one blade; you need to specify a counterweight but you can make it negligibly small. For two blades it will assume that you want a true two-bladed rotor with 180-degree blade separation, but you can get around this by setting the "Error in Blade Azimuth" for either of the blades to be +/-60 degrees. You can do this on the Imbalances tab of Calculation Parameters.