******************* 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 trying to validate the results of biglobal LSA of naca 0012 at AOA=16 with ARPACK. I was able to recreate the base-flow and tried to do the direct analysis with shift invert transformation at 0i, 2i, 4i, 6i, 8i and 10i and beta=1 but the eigenvalues are not correct. I have attached the case files as well as the reference paper. I would be highly grateful, if someone could check my implementation and highlight any possible issues. Thanks! Regards, *Gaurav Gupta* Scientist/Engineer-SC Space Applications Centre, ISRO Ahmedabad, GJ, India Telephone: +91 (0) 79-2691-2269