Turbulent Transport Characteristics and Mechanistic Insights into Particle Suspensions with Distinct Photoresponses: A Comparative Investigation

) were further discussed. By integrating analyses of particle morphology, interfacial physicochemical properties, sensible heat conversion, and agglomeration kinetics, it was concluded that the drag reduction mechanisms of particle suspensions differ significantly under nonirradiation and photoirradiation conditions. The former is dominated by the particle size effect, which modulates the dissipation rate of turbulent kinetic energy. The latter, by contrast, induces variations in particle interfacial wettability and temperature elevation within the particle suspension under continuous photoirradiation, thereby further impacting transport energy consumption and pressure drop. It is anticipated that our findings could offer a theoretical guidance for efficient energy transfer and material conversion in chemical reactions involving the transport of photoresponsive particle suspensions.