Experimental and numerical study demonstrates accurate prediction of gas-liquid wall-attachment jet dynamics within 5% error, indicating robust modeling for small-offset fluidic devices.
Key Points
Investigate internal flow characteristics and validate numerical models for gas-liquid wall-attachment jet behavior in a fluidic component with a small offset ratio (D/b = 0.2).
Measured internal velocity fields and identified wall-attachment points across flow rates of 3 to 5 m³/h using particle image velocimetry (PIV).
Performed numerical simulations comparing multiple two-phase flow models and turbulence formulations, including the shear stress transport (SST) model.
Identified a stable wall-attached jet alongside an upstream recirculation zone across all tested flow rates.
Determined that the SST turbulence model combined with a free-surface two-phase model accurately captures wall-attachment behavior and pressure differences.
Achieved numerical agreement within 5% of experimental PIV measurements for the predicted attachment offset distance.