Rheological behavior of hybrid nanofluids

Nanofluid is a fluid that contains nanometer-sized particles, achieved as colloidal suspension of solid nanoparticles of higher thermal conductivity material into the conventional basic fluids. The advancement of heat transfer fluids has led to discover and develop nanofluids. Recently, the field of nanofluids has gained enormous interest due to their great advantages over conventional fluids. The presence of nanosized particles within conventional fluids led to an increase in the thermal conductivity coefficients compared with base fluids. Researchers across the global continuously working toward further advancement and improvements of the nanofluids' behavior. The rheological behavior of a nanofluid is described by the relationship between the shared stress and its rate. This chapter outlines the rheological behavior of hybrid nanofluids with review and recent studies and findings of a mixture of dual nanometer-sized (100. nm) particles with variant base fluids and variant volume fraction. It is noticed that the size of the nanoparticle, shear rate, and nanoparticle loading affect the rheological behavior of hybrid nanofluids significantly.