How can I or where can I find information about how to determine torque and rpm of a motor to produce a given maximal flow and maximal pressure with a centrifugal turbine? For e.g. this one: http://www.thingiverse.com/thing:13188

I guess the maximum pressure in case of a closed outlet is a function of the rpm, while achieving a certain flow with an open outlet would require a certain torque? An approximation would probably be enough. I did not find detailed information - and integration of the centrifugal forces is difficult enough yet already a pretty crude approximation. Literature about turbine design or possibilities to model one would also be interesting.