Engineering simulation software provider ANSYS has signed an agreement to acquire Reaction Design. San Diego, CA-based Reaction Design provides chemistry simulation solutions that enable transportation manufacturers and energy companies to achieve their clean-technology goals by automating the analysis of chemical processes via computer simulation and modeling solutions. The acquisition of Reaction Design complements ANSYS' offerings for the simulation of internal-combustion engines; effective simulation of the underlying detailed chemistry is critical to advancements in engine and fuel technology. “Combining [Reaction Design’s] solvers with ANSYS' solutions will give customers new insights into the combustion processes in their products—driving increased fuel efficiency,” said Jim Cashman, ANSYS CEO. Details were not immediately made available regarding the transaction, which is expected to close in January 2014.