Hello Mohsen, It still doesn’t get activated. Regards, Ishan From: Mohsen Lahooti <Mohsen.Lahooti@newcastle.ac.uk> Sent: 07 March 2024 16:31 To: Nande, Ishan A. <ian9@leicester.ac.uk>; nektar-users <nektar-users@imperial.ac.uk> Subject: Re: Filters in Acoustic Solver You don't often get email from mohsen.lahooti@newcastle.ac.uk<mailto:mohsen.lahooti@newcastle.ac.uk>. Learn why this is important<https://aka.ms/LearnAboutSenderIdentification> ***CAUTION:*** This email was sent from an EXTERNAL source. Think before clicking links or opening attachments. Hi Ishan, You forgot to give a file name for history points, syntax is the same as you did for the checkpoint filter Cheers Mohsen Dr Mohsen Lahooti, PhD Lecturer in Fluid-Structure Interaction Mechanical Engineering Newcastle University School of Engineering Room 4.28, Stephenson Building Claremont road Newcastle upon Tyne NE1 7RU UK Email mohsen.lahooti@newcastle.ac.uk<mailto:mohsen.lahooti@newcastle.ac.uk> Webpage<https://www.ncl.ac.uk/engineering/staff/profile/mohsenlahooti.html> ________________________________ From: nektar-users-bounces@imperial.ac.uk<mailto:nektar-users-bounces@imperial.ac.uk> <nektar-users-bounces@imperial.ac.uk<mailto:nektar-users-bounces@imperial.ac.uk>> on behalf of Nande, Ishan A. <ian9@leicester.ac.uk<mailto:ian9@leicester.ac.uk>> Sent: Thursday, March 7, 2024 4:27:46 PM To: nektar-users <nektar-users@imperial.ac.uk<mailto:nektar-users@imperial.ac.uk>> Subject: [Nektar-users] Filters in Acoustic Solver ⚠ External sender. Take care when opening links or attachments. Do not provide your login details. This email from ian9@leicester.ac.uk<mailto:ian9@leicester.ac.uk> 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. Hello, I am trying to set-up a “HistoryPoints” filter in the AcousticSolver which is solving Linearized Euler Equations. Unfotunately, this filter is never activated. The system is set-up to solve for 100 time steps and I wish to record values at points as well as lines. To start with, I played around with the points filter setup and this the format which I have used: <FILTERS> <FILTER TYPE="HistoryPoints"> <PARAM NAME="OutputFrequency">1</PARAM> <PARAM NAME="Points"> -100 0 0 </PARAM> </FILTER> <FILTER TYPE="Checkpoint"> <PARAM NAME="OutputFile">IntermediateFields</PARAM> <PARAM NAME="OutputFrequency">1</PARAM> </FILTER> </FILTERS> For some reason, the .his files are never written but .chk files are. What could I be doing wrong in my setup ? Regards, Ishan