Biotransport Processes (BMEN30007)

AIMS

This subject introduces transport processes in biomedical systems, complementing and reinforcing material learned in related biology subjects. Students will be introduced to the process of developing engineering models and simple conceptual designs in the context of biological systems. The subject covers fundamental concepts of diffusion and conservation within momentum, heat and mass transport. Within momentum transport, specific topics include Newton’s law of viscosity, viscosity of gases and liquids, conservation of momentum, velocity distributions in simple laminar flows, boundary layer concepts and turbulence and the Reynolds number. Within heat transport, Fourier’s law of conduction is covered. Within mass transport, specific topics include Fick’s first and second laws of diffusion, diffusivities of gases, liquids and solids, binary mixture diffusion and conservation of mass, concentration distributions in simple binary systems including identifying appropriate boundary conditions, concentration boundary layer concepts, Schmidt and Sherwood numbers, definition and use of mass transfer coefficients.

Students will examine transport of molecules and cells in biological systems to describe various key processes, such as cell migration and provision of cell nutrition. The role of transport processes in biological systems and employed in clinical applications, such as dialysis, will be described using simple engineering models.

INDICATIVE CONTENT

Topics covered include momentum transport, viscosity, turbulence, heat transport, mass transport, diffusion in binary systems, unsteady state mass transfer, and modelling biological transport processes.