<div dir="ltr">Hi There NEKs,<div><br></div><div>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:</div><div><br></div><div>
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.</div>
<div>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. </div><div><br></div><div>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. </div>
<div><br></div><div>Any assistance is greatly appreciated.</div><div><br></div><div>Best of luck to everyone,</div><div>Javid</div></div>