Write a full mathematical description (PDEs, boundary conditions, and if appropriate initial conditions) for 2 elliptic, 2 parabolic, and 2 hyperbolic problems.  One of these six must provide a mathematical description of some simple fluid and/or heat transfer experiment.   Provide a full reference to the description of the experiment in a book or journal, and photocopy of the page or pages giving a concise description of the geometry of the apparatus.  The paper that you use must contain data that could be used to validate your mathematical model (and computational solution).