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negative Cp
Hi, I want to ask what indications are shown by the blade and rotor if the resulting Cp is negative?
Hi,
a negative Cp value indicates that a negative torque is required to rotate the rotor, meaning energy is added to the flow rather than extracted.
If you’re referring to negative Cp values observed during VAWT simulations (DMST or LLFVW), several threads on this forum discuss this topic in detail. You should be able to find them using the search function.
Otherwise, could you clarify your question?
BR,
David
