The energy flux contained in a fluid stream is directly dependent
on the density of the fluid, cross-sectional area, and fluid
velocity cubed. In addition, the conversion efficiency of hydrodynamic,
mechanical, or electrical processes reduce the overall output.
While turbine systems are conceived as prime choices for
such conversion, other non-turbine approaches are also being pursued
with keen interest. A brief description of ten (10) interrelated
concepts categorized in two broader classes (turbine/non-turbine)
is given below: