SAN DIEGO - April 16, 2007 - Reaction Design, the clean technology chemistry leader, and Gamma Technologies are proud to announce the release of GT-POWER/CHEMKIN-CFD, an advanced software tool for simulating detailed gas-phase and gas-surface chemistry in an engine or powertrain flow. GT-POWER/CHEMKIN-CFD closely couples Reaction Design's CHEMKIN-CFD chemistry-solver technology with Gamma Technologies' GT-POWER software. GT-POWER users benefit from the addition of Reaction Design's robust chemistry modeling approach to their engine and powertrain flow simulations. GT-POWER/CHEMKIN-CFD is designed to efficiently and accurately simulate "stiff" gas phase and/or surface chemistry with detailed kinetic mechanisms, including the production and destruction of trace species.

GT-POWER is the industry-standard engine and powertrain simulation tool, used by leading engine and vehicle makers and their suppliers. It is also used for marine and electric power-generation engines, small two- and four-stroke engines as well as powertrains used in competitive race circuits. It provides the components to model any advanced concept. Among its advantages are ease of use and tight integration with the rest of GT-SUITE, which give GT-POWER a "virtual engine" perspective. The GT-SUITE environment also provides GT-POWER with proven high-productivity features for pre- and post-processing, DOE/optimization, neural networks and control modeling.

GT-POWER is also widely used for aftertreatment modeling, including three-way, selective catalytic reduction (SCR), Lean NOx Trap (LNT) and oxidation catalysts. In combination with CHEMKIN-CFD, detailed analyses of catalyst light-off, poisoning and other phenomena are possible, all with detailed surface chemistry. Using GT-POWER's engine and flow capabilities, GT-POWER/CHEMKIN-CFD simulates the entire powertrain in a fully coupled manner allowing designers to have full visibility of the chemistry effects in their system.

Reaction Design is the exclusive developer and distributor of CHEMKIN, the de facto standard for modeling of gas and surface-phase chemistry. Based on CHEMKIN technology, the CHEMKIN-CFD Module allows incorporation of detailed gas-phase and surface chemistry into powertrain simulation software using stiff-chemistry solution methods for both transient and steady-state problems.

According to Prof. Rolf Reitz of the University of Wisconsin 's Engine Research Center and a member of Reaction Design's Board of Directors, "The combination of Reaction Design's efficient chemistry-solvers and Gamma Technologies' comprehensive engine simulation tools improves significantly the fidelity of engine system performance and emissions predictions. This permits engine and aftertreatment system designers to make more informed decisions about design parameters, and reduces the need for time-consuming and expensive engine tests."

GT-Power/CHEMKIN-CFD is licensed and supported by Reaction Design, the recognized leader in simulation of chemical kinetics and is available immediately.

Reaction Design helps transportation manufacturers and energy companies rapidly achieve their Clean Technology goals by automating the analysis of chemical processes via simulation and modeling solutions. Reaction Design is the exclusive developer and distributor of CHEMKIN, the de facto standard for modeling gas-phase and surface chemistry that provides engineers ultra-fast access to reliable answers that save time and money in the development process. Reaction Design also offers the CHEMKIN-CFD software package, which brings detailed kinetics modeling to other engineering applications, such as Computational Fluid Dynamics (CFD) programs. Reaction Design's world-class engineers, chemists and programmers have expertise that spans multi-scale engineering from the molecule to the plant. Reaction Design serves more than 350 customers in the commercial, government and academic markets. Reaction Design can be found online at www.reactiondesign.com.