[Nek5000-users] Pulsatile Flow in NEK5000

[nek5000-users at lists.mcs.anl.gov]

Hi There NEKs,

I am currently trying to run a case with pulsatile inlet condition. The
context is pulsatile stenotic flows. I have two Question regrading the set
up:

1st Question) How do I access the "Time" variable in NEK5000? I need to
define a time dependent inlet velocity condition in the user file. V as a
function of Y and T. I already have the function which is a patient
specific velocity inlet profile. Please note that this should be a
pulsatile flow. This, I assume, is different than a periodic flow. I'll be
investigation the effect of pulsatility on some 2D geometries.
It would be wonderful to know how to implement time dependent inlet
velocity condition in user file. Previously I have only used steady
 and parabolic inlet velocity.

2nd Question) I will be using a simple Dirichlet BC on pressure for the
outlet. I have also used the Nozzle outlet condition but, as it turns out,
I cannot use the Nozzle condition with stress formulation. I wanted to know
if the Sponge condition for outlet is proper and if it can be coupled with
stress formulation? I am considering a non-Newtonian fluid with variable
viscosity for my simulation.

Any assistance is greatly appreciated.

Best of luck to everyone,
Javid
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