Shear rate around cylinder (radial shear rate), Navier Stokes

classic Classic list List threaded Threaded
2 messages Options
Reply | Threaded
Open this post in threaded view
|

Shear rate around cylinder (radial shear rate), Navier Stokes

bborer
I'm trying to calculate the radial shear rate around a cylinder in laminar flow.

COMSOL stores the shear rate spf.sr directly when solving the NS equation (e.g. https://www.comsol.com/forum/thread/83661/wall-shear-stress).

Does FEATool store something similar in the background or is there an easy way to calculate it based on the grid and velocity field?

Thanks!
Ben
Reply | Threaded
Open this post in threaded view
|

Re: Shear rate around cylinder (radial shear rate), Navier Stokes

Precise Simulation
Administrator
The shear rate is pre-defined in the Non-Newtonian flow physics mode available in version 1.15 and later. If you want to use shear rate in another physics mode, then you can copy the non-Newtonian expression for "gamma" from the "Subdomain Settings" dialog box, and define a equivalent custom expression in your physics mode.