Development of boundary transfer method in simulation of gas-solid turbulent flow of a riser

The non-equilibrium effects near the wall including separation, reattachment and stagnation are mainly occurs at inlets, outlets and upper's lid of risers. In this study, the boundary transfer method (BTM) for coupled gas-solid equations developed. This method projects the wall boundary conditions into the body of fluid. Furthermore, simulation results compared with available experimental data of FCC riser. Using developed BTM, which considers the non-equilibrium effects, has major improvement on prediction of gas and in consequence solid flow pattern in the riser.