Concentration, Heat And Momentum (CHAM) is a company that provides consultancy and software house that specializes in computer simulation of fluid-flow and heat-transfer processes. It offers PHOENICS, a contract for differences (CFD) program with a proven track record that can simulate fluid flow, heat or mass transfer, chemical reactions, and combustion; FLAIR, provides an air-flow and thermal-simulation facility for building services engineers and the HVAC community. The company caters to the electronics, industrial, manufacturing, and transportation sectors.