Applications from commercial engineering problems are often extremely complex and involve extensive collaboration between a diverse group of people to ensure their e ective solution. An essential component of these collaborations is the ability of everyone involved, from computational scientists to eld engineers, to be able to interpret, interact with, and optimize the computational model. Immersive virtual environments represent a promising new technology that facilitates these collaborations and as such are beginning to play an important role in the computational modeling of commercial engineering problems.

In this paper, we discuss a pilot project involving a collaboration between Nalco Fuel Tech (NFT), a small company that has developed state-of-the-art emission reduction systems for commercial boilers, and the computational science group at Argonne National Laboratory (ANL). The key objective of this project is the development of a real-time, interactive capability that allows the user to drive the computational model from within the virtual environment. In this case, the required interaction involves the placement of chemical injection systems in the boiler and a quick evaluation of