Community Research and Development Information Service - CORDIS

An impulse turbine with self pitch controlled guide vanes

The principles of operation and factors controlling the performance of an impulse turbine with self pitch controlled guide vanes for wave energy conversion have been investigated. As a result, set of design factors for the impulse turbine have been chosen.

Experimental data from small scale tests indicate that this turbine is superior to Wells turbine in overall characteristics. The recommendable geometrical parameters for the rotor blade are: elliptic profile with a blade space to chord length of rotor ratio of 0.5; width of flow path to blade space ratio of 0.4; blade inlet angle of 60 degrees and sweep angle of -7.5 degrees. For the guide vane (monovane type) the parameters are: a guide vane space to chord length of guide vane ratio of less than 0.65; setting angle of upstream guide vane of 15 degrees and setting angle of downstream guide vane of 72.5 degrees. For the splitter type the parameters are: a guide vane space to guide vane length ratio of about 0.8; setting angle of upstream guide vane of 15 degrees and downstream angle of 55 degrees; a slot width to chord length of guide vane ratio of 0.1.

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Record Number: 11022 / Last updated on: 1995-01-09
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