******************* 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 nektar++ users and developers, I am using the Adaptive SFD method to calculate the flow field information when a square column experiences vortex shedding. But I have calculated many times according to the prompts in the user guide document, and the following two results are displayed: Vectors are lineary independent NaN found during time integration How should I set up an XML file to ensure correct calculation? I will attach my calculation file. I run the command ：IncNavierStokesSolver Cylinder-4.xml.gz Cylinder-4.xml Hongtao Cheng