NE410/510 - Lecture 9: The Critical Condition and Vacuum Boundary Conditions

[@zarinskie]

thank you for saving my life before the midterm!

[@قناةناصر-ب9ف]

In minute 8:00 , you said the gradient of the flux is -Bn^2. Could you please explain where did that come from? Thanks a lot!

[@NuclearEngineeringLectures]

The Laplacian of the flux must equal -Bn^2 is the flux is to satisfy the Helmholtz Equation (i.e., the version of the Diffusion Equation that we have derived).

[@Unoobertuber862]

I thought that cos(0)=1, why did you say it is cos(0)=0?