Letter from the Editor
"No amount of experimentation can ever prove me right; a single experiment can prove me wrong."
When receiving a Flow Science Newsletter, some individuals may first scan the Editor’s Note to get the "lay of the land" for the remaining articles. That expression happens to be an excellent metaphor for the subjects under discussion. This is most evident in the Hints & Tips where a new method is described for converting topographic data into an accurate STL file that can be used for numerical simulations. Such conversions would seem to be simple until it is realized that typical topographic data often consists of a combination of large relatively flat areas interspersed with small localized details involving large elevation changes.
Sea and river beds offer another type of landscape in which a change in contour can occur because of scouring by fluid dynamic processes. In response to requests for a better predictive capability to describe changes in this type of land lay, several new enhancements have been added to the sediment scour model as described in this issue's Development Focus.
Although getting the lay of the land inside a large building may be stretching our metaphor, the design of air passages from ground floor to the rooftop to encourage the heating and cooling of a building by natural convective processes seems to fall in the general category of flows in and over rough terrain. This topic is the subject of our Application article, FLOW-3D Helps Architects Achieve LEED Certification in Sustainable Buildings.
No matter where you are standing, we hope our Newsletters give you a better perspective of the lay of the land over which FLOW-3D can be applied.