Numerical simulations of particle laden and fully developed turbulent channel flows with rectangular riblet were performed to investigate the influence of particle adhesion on the drag reduction effect. We employed the one-way coupling method: the flow affects the particle. but the particle does not affect the flow. We obtained particle adhesion distribution on the riblet and grooves. https://www.bekindtopets.com/top-sale-Granular-foveolae-3911-limited-choice/