******************* This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping for this address. ******************* Dear all, I use Nektar++ mainly to study time dependent 3D plane Poiseuille flow, using the Incompressible Navier-Stokes Solver (using a fully 3D configuration), I'm wondering what would be the best approach to add Blowin and/or Suction at the wall ? Looking into the user-guide version 5.1.0 section 3.5.1- XML-Session-File>Forcing>Absorption seems to be a usable feature in this context Is there an efficient and suitable approach to add these perturbations to the flow ? Any general guidelines to achieve this are really appreciated, Thanks in advance, Kind regards, Saad