Analysis of s834, s1223 and eppler 420 airfoil geometries for a hydrokinetic turbine.

This work show the analysys of a three different airfoil geometris, that shows the turbine design and how important are this for the existent technologies. The imporante of cavitation and other physics phenomes it's a critical point on blade design, this mean that its necessary create many profiles and operation conditions, like free surface separation, blade high, cavitation and the influence of the diffusors applied directly to the turbine design and the effects that all this phenomens has into the blade design. [ABSTRACT FROM AUTHOR]