Toward predictive multiscale models for HiGee devices

High gravity (HiGee) devices exploit centrifugal fields and compact volumes to intensify transport and reactions. Multiscale modeling advances show how HiGee thins boundary layers, enlarges interfacial areas, and accelerates mixing, heat, and mass transfer, increasing rates in fast reaction systems. A workflow links mechanistic descriptions, computational fluid dynamics reactor simulations, and process-level simulations while identifying gaps at interfaces where turbulence, mass transfer, and kinetics dominate. Priorities include rotation–aware turbulence closures, turbulence–chemistry interaction models for gas–liquid flows, and subgrid or molecular descriptions for reduced-order and process models. Advances drawing on combustion and aerothermodynamics will enable predictive design and scale-up of HiGee devices.