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This seems like a good thread to ask this question: does anyone know a good place to find turbine curves/turbine maps for small fans used a turbines? It's pretty easy to find a fan curve for a small fan (e.g. under 12 inch diameter) but very very few will also have an available turbine map. As far as I know, there is no way to convert a fan curve to a turbine curve (I'd be very interested if such a thing existed!).

Does anyone have any help or suggestions?

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JavaProp is a very powerful tool for generating propellers and numerically calculating performance characteristics. You can get some great results if you’re willing to push through the arcane UI.

http://mh-aerotools.de/airfoils/javaprop.htm

The tool works for any fluid, you have to configure the fluid density and viscosity for air. It can auto generate props based on some initial state, or if you have an existing prop you can measure the various parameters and feed that in.

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