******************* 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. ******************* Hi Nektar++ users, My name is Manmohan Labh. I am a Mechanical Engineering Under graduate form Indian Institute of Technology ( Indian School of Mines ) Dhanbad. I am trying to learn Nektar++ for my research on VIV in fluids. I tried running a simulation of flow past a stationary square cylinder, but i am facing difficulty in it. Please help me. I have attached all the generated files in this mail. Error - Fatal level 0 assertion violation NAN found during tìme integration. Regards, Manmohan Labh