Cleanup: Rans velocity gradient function and IO fields
@anna_m_kostelecky pointed the following issues out yesterday during a meeting.
- The indices in the
velocityGradient(elementIdx, velIdx, dimIdx)function within the rans problem were backwards
- The IO fields for the rans problem list the velocity gradients for all directions as "dv/dx_" with a trailing index (0,1,2). An "s", for spatial, rather than the "x" would be more fitting.
@tschol, I wouldn't blame you if you had ignored that part of conversation, but as you were there during the meeting I would assign you? Otherwise after the pipeline passes, anyone could merge this.