Heat transfer in inhomogeneous dispersed systems based on graphene oxide hydrogels

Abstract

Based on the optical holography method, studies of the occurrence and development of convective flows in hydrogels of various concentrations with the addition of graphene oxide in relation to 3D-bioprinting technology have been performed. For quantitative measurement of temperature fields, the optical holography method was used in combination with the gradient thermometry method, based on the dependence of the refractive index on the properties of hydrogel systems modified with graphene oxide with different concentrations and temperatures. Under conditions of changes in the thermophysical properties of hydrogels, as well as the magnitude of the supplied heat flux, the features of heating the wall area are studied in order to determine the coefficients of thermal conductivity and heat capacity, as well as the nature of the formation of convective flows near the wall heated from below.