I am trying to reduce a tensor expression: ωiωjUi,j
For which I have tried the following
Question 1. Am I using the continuity condition correctly? How do I use this condition correctly? If I change the index for the expression, substitution does not work correctly.
Question 2. How do I expand the red_eq term in terms of the basis to give out the full expression?
Question 3. I would like to eventually replace U by (A-Amean) in the current expression. How do I implement this?