T. Alarcon
We introduce a new framework to study the non-Newtonian behaviour of fluids at the microscale based on the analysis of front advancement. We apply this methodology to study the non-linear rheology of blood in microchannels. We carry out experiments in which the non-linear viscosity of blood samples is quantified at different haematocrits and ages. Under these conditions, blood exhibits a power-law dependence on the shear rate. In order to analyse our experimental data, we put forward a scaling theory which allows us to define an adhesion scaling number. This theory yields a scaling behaviour of the viscosity expressed as a function of the adhesion capillary number. By applying this scaling theory to samples of different ages, we are able to quantify how the characteristic adhesion energy varies as time progresses. This new framework is the theoretical basis of a patent of a portable device for the analysis of blood being developed by Rheo Diagnostics
Palabras clave: haematology, diganostics, non-Newtonian fluid dynamics
Programado
Sesión Invitada Math-In. Industrial Applications at CRM
9 de junio de 2022 12:00
Aula Magna
