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The Prism

The reference pyramid is described as the set of points: $\begin{displaymath}Pr_{ref} = \{(r,s,t) \vert -1 \leq r,s,t \leq 1; \hspace{8pt} r+t \leq 0 \}\end{displaymath}$

The reference prism is mapped to a straight-sided physical prism by:

The tensor element is mapped to the reference prism by:

This mapping is singular at c=1.

**Figure 2.5:** The tensor coordinates of the prism.
$\begin{figure}\centerline{\psfig {file=/crunch/crunch7/tcew/Thesis/Figures1/Eps/prism_mesh.eps,height=3in}}\end{figure}$

T. Warburton

10/24/1998