Venturi-effect rotating concentrators and nonreciprocity characteristics based on transformation hydrodynamics

The development of hydrodynamics metamaterials and transformation has enriched the methods fluid flow control. In proposed study, coupling rotation amplification functions, hydrodynamic rotating concentrators with tensorized viscosity are designed based on hydrodynamics. Through numerical simulations, we have demonstrated that can simultaneously magnify rotate velocity in creeping flows. central area concentrators, is amplified, exhibiting venturi effect; external state not interfered due to presence maintaining original state. Additionally, discover explain mechanisms rotational hysteresis phenomena caused by nonreciprocity spatial coordinate transformations. studies 1) extend optimize traditional 2) raise new approaches for applications related Venturi effects, 3) shed light design nonreciprocal transformations metamaterials.