Effect of an Oscillating Grid on Hydrodynamics and Gas-liquid Mass Transfer in an Aquarium

This experimental study describes the effect of oscillating grid on hydrodynamics and mass transfer in an aquarium. The contribution two driving elements CO2 is identified. Depending operating conditions, either these effects add up promote circulation transport liquid, or are opposite, liquid velocity then reduced. On other hand, with regard to gas-liquid transfer, use beneficial since, under certain conditions; coefficient increased compared that obtained without grid. Analysis various energy contributions unit shows presence justified only cases where flow rate must remain low. Flow characterization was performed using Particle Image Velocimetry (PIV) technique. results were previous studies. In order perform concentration field measurements by planar laser induced fluorescence (PLIF) technique simultaneous PIV PLIF measurements, test bench modified. observations fields adequacy studies allow validate bench. necessary tools have been put place, can continue.