Letter from the Editor
"Human beings, by changing the inner attitudes of their minds, can change the outer aspects of their lives"
-William James (1842 - 1910)
At one time or another we all find ourselves with various kinds of mixing problems: mixed feelings, mixing our metaphors, mixing it up. Or maybe we try to mix together things that do not mix well. Oil and water come to mind as do foxes and chickens, matter and anti-matter, lemon and milk and Republicans and Democrats. On the positive side, there are occasionally those who bring together seemingly disparate quantities with astonishingly good results. Personally, your Editor likes peanut butter and chocolate, but for now we have to concentrate on what’s in this issue of the Newsletter.
Mixing solid metal with foam-like metal is the subject of an Application article that describes how to simulate a new type of cast part having the desirable properties of low weight and high strength. In Hints and Tips, the topic is how to visualize the mixing and interaction of different fluid streams, a highly useful technique with many applications. And not to be outdone, on the level of mixing the seemingly unmixable, our developers have cooked up a way for fully three-dimensional models to be blended in with two-dimensional, shallow-water simulations. This combination, described in a Development article, offers local resolution of complex structures together with the efficiency gained from a shallow-water approximation for large scale flow.Shake or stir, whichever you prefer, and then take a few moments to mix it up with this mixture of new ways to think about mixing.