Abstract
A power-generation experiment with a disk MHD generator driven by potassium-seeded helium was made. High values of the output power density and of the enthalpy extraction have been obtained. For helium temperatures between 2200 and 2400 K, an output power density of 120 MW/cu m and an enthalpy extraction of 20.4 percent have been measured. The measured static pressure distribution has shown that strong gasdynamical shock has not been observed in the MHD channel under this high enthalpy extraction. It has been suggested that the disk generator performances can be predicted by one-dimensional calculations with ideal plasma parameters for the case of no negative potential region at the channel inlet and no shock formation in the disk generator. 11 refs.
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