Student Photo Competition 2018
2. Danica Tothova - FSET - Vortex Shedding at the Mouth of an Oscillating Water Column
The operation of wave energy converters is usually modelled using linear wave theory which assumes small amplitudes of oscillation and neglects non-linear effects. However, large amplitudes are desired in order to achieve high efficiency, thus violating linear theory . The best performance of wave energy converters is achieved during resonance, when the natural frequency of the oscillator is tuned to the frequency of the incoming waves. This photo shows a non-linear phenomenon - vortex shedding at the mouth of a scaled model of a simple wave energy converter – an oscillating water column tuned to the forcing waves. Energy lost due to turbulence needs to be included in estimation of wave power obtained at resonance and therefore the linear equations have to be modified.
2. Danica Tothova - FSET - Vortex Shedding at the Mouth of an Oscillating Water Column
The operation of wave energy converters is usually modelled using linear wave theory which assumes small amplitudes of oscillation and neglects non-linear effects. However, large amplitudes are desired in order to achieve high efficiency, thus violating linear theory . The best performance of wave energy converters is achieved during resonance, when the natural frequency of the oscillator is tuned to the frequency of the incoming waves. This photo shows a non-linear phenomenon - vortex shedding at the mouth of a scaled model of a simple wave energy converter – an oscillating water column tuned to the forcing waves. Energy lost due to turbulence needs to be included in estimation of wave power obtained at resonance and therefore the linear equations have to be modified.