Recirculating inertial hydrodynamic pump and wave engine

A method of converting wave energy, the method comprising:

• capturing energy from waves of a body of water with a buoyant wave energy converter, the buoyant wave energy converter comprising an upper chamber adapted to confine a first fluid reservoir and a gas pocket, an injection tube fluidly coupled to the upper chamber, wherein the injection tube is adapted to impel a fluid into the first fluid reservoir when the buoyant wave energy converter oscillates about a waterline with the upper chamber adjacent to the waterline, an annular working-fluid return channel around the injection tube, wherein an upper end of the annular working-fluid return channel is fluidly coupled to the upper chamber and adapted to exchange gas with the gas pocket, a working-fluid turbine pipe adapted to fluidly couple the upper chamber to the annular working-fluid return channel, and a turbine in the working-fluid turbine pipe, wherein the turbine is adapted to generate electricity from a flow of the fluid through the working-fluid turbine pipe, and a working-fluid return opening that fluidly couples the annular working-fluid return channel to the injection tube, and wherein the working-fluid return opening is adapted to recycle the fluid from the annular working-fluid return channel to the injection tube;
• and
• using the captured energy to power a computing system coupled to the buoyant wave energy converter.