Starting in the spring 2013, I videotaped the lectures for my MATH 676: Finite element methods in scientific computing course at the KAMU TV studio at Texas A&M. These are lectures on many aspects of scientific computing, software, and the practical aspects of the finite element method, as well as their implementation in the deal.II software library. Support for creating these videos was also provided by the National Science Foundation and the Computational Infrastructure in Geodynamics.
Note 1: In some of the videos, I demonstrate code or user interfaces. If you can't read the text, change the video quality by clicking on the "gear" symbol at the bottom right of the YouTube player.
Note 2: deal.II is an actively developed library, and in the course of this development we occasionally deprecate and remove functionality. In some cases, this implies that we also change tutorial programs, but the nature of videos is that this is not reflected in something that may have been recorded years ago. If in doubt, consult the current version of the tutorial.
Lecture 21.65: Boundary conditions. Part 3b: Inhomogenous Dirichlet boundary conditions
Lecture 21.6 discussed the algorithms used when dealing with homogenous (i.e., zero) strong boundary conditions (such as Dirichlet boundary conditions for the Laplace equation). This lecture extends the discussion to what happens when we have nonhomogenous strong boundary conditions and how they are incorporated into the linear system.
Slides: click here