HI Emily, We can add forcing terms but I do not believe we have anything like your inner product currently setup. I am cc’ing Henrik who might be able to have a chat about setting up this type of term. Best regards, Spencer. From: nektar-users-bounces@imperial.ac.uk <nektar-users-bounces@imperial.ac.uk> on behalf of Emily Smith <emily.r.smith1993@gmail.com> Date: Sunday, 23 October 2022 at 06:11 To: nektar-users <nektar-users@imperial.ac.uk> Subject: [Nektar-users] Linearized NS equation with forcing term This email from emily.r.smith1993@gmail.com 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 Nektar++ community, I want to solve the evolution equations for the OTD modes using Nektar++. I would be grateful if you could read my question in the attached pdf file because it has some formulas. With best regards, Emily