******************* 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. ******************* Hello, I am a new user of Nektar++ and will be using the Linear Stability Analysis solver. I have been able to run simulations successfully and I have a few basic questions related to post-processing in Nektar++. I would be grateful if someone could help me with the following questions: 1. What are the headers of the ConvergenceHistory.txt file ? There are 5 columns where I understand the first three are iteration number, simulation time, computation time. Are the other two Linf and L2 ? 2. I had run the solver in parallel which generates folders with n chk/fld files for n processes. Is there any way I can combine these n files into a single vtu file for post-processing ? I couldn't find answers to the above questions in user-guide as well as in the email archive. Hence, I am posting this email. Thanks! Sincerely, *Gaurav Gupta* Senior Undergrad Student Dept. of Aerospace Engineering Indian Institute of Space Science and Technology