No abstract

MECCANICA 20 (1985)

A simple, fast, and rather general procedure combining the superposition principle with a finite element method is proposed to deal with conjugate heat transfer problems. The method is employed to consider the wall conduction effect on heat transfer to fully developed laminar flow through a pipe whose exterior boundary is uniformly heated along a finite length. Results are given for two values of each of the four parameters determining the relative importance of axial conduction: the Peclet number of the fluid, the wall to fluid conductivity ratio, and the dimensionless thickness and length of the heated section of the pipe.

No abstract

Three models of different stent designs implanted in a cerebral aneurysm, originating from the Virtual Intracranial Stenting Challenge 2007 (visc'07), are meshed and the flow characteristics simulated using commercial Computational Fluid Dynamics (cfd) software in order to investigate the effects of non-Newtonian viscosity and pulsatile flow. Conventional mass inflow and Wall Shear Stress (wss) output are used as a means of comparing the cfd simulations. In addition, a wss distribution is presented, which clearly discriminates in favour of the stent design identified by other groups. We conclude that non-Newtonian and pulsatile effects are important to include in order to avoid underestimating wss, understand dynamic flow effects and to discriminate more effectively between stent designs.