Need help with irregular surface values
 

Dear Fluent users,

Simple question, why do you think there are irregular pressure values on the surfaces in the pictures below?
Using RNG, enhanced wall treatment with yplus 1, tried second and third order schemes, constructed a block structured mesh and generated geometry using icem cfd.

Sorry for posting the message on this board because I had posted the same on the main cfd forum. This might be the right board for it. I could not delete the previous one.