Computational fluid dynamics and experimental validation of hydrodynamics of ripple tray

In the present study, numerical simulations of liquid/gas flow behavior on ripple tray have been carried out, and an inhomogeneous Euler-Euler model coupled with the SST turbulence model has been applied. Calculations are carried out using the ANSYS CFX 12.0. Validation of the predictions of macroscopical parameters including clear liquid height, dry/irrigate pressure drop is made against the measurements. Detailed insights into the hydrodynamic behavior are obtained by CFD post-processing. Comparison with sieve tray is made and the advantages of ripple tray are well illustrated in the analysis of flow field. Dual-diameter perforated ripple tray is also investigated and the result indicates that it performs better in terms of pressure drop and operational flexibility.