******************* 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 All, I hope everyone is all rights! Once I raised this issue before but I wasn't able to resolve it. I get unphysical oscillation in Reynolds stress calculated by Nektar++. The footprints of elements are so much that render the results useless. Below is an example: [image: image.png] On the contrary, the time-averaged fields are so smooth: [image: image.png] I am using a quite fine mesh with a p-order of 4: [image: image.png] The case is quasi-3D with a homogenous z-direction. I am wondering what can be done to mitigate the spurious oscillations. Please share your thoughts with me. I appreciate any help you can provide. Kind regards syavash
