Ricerc@Sapienza

A two-phase model based on the double-diffusive approach is used to perform a numerical study of natural convection of alumina-water nanofluids in differentially heated vertical slender cavities. In the mathematical formulation, Brownian diffusion and thermophoresis are assumed to be the only slip mechanisms by which the solid phase can develop a significant relative velocity with respect to the liquid phase.

A European Union funded research project called RUN2Rail is investigating a range of new technologies for railway rolling stock. The project includes a task on the use active of suspensions, and one of the subtasks is to propose a homologation or authorisation strategy. The incorporation of electronics and control into suspension systems is still at an early stage, so this paper provides a framework for a practical and efficient authorisation strategy based upon existing European regulations and standards.