Current radiator design technology has proven ineffective and inefficient for high performance combat vehicles with smaller silhouettes. Goss Engineers, Inc. proposes a new and innovative modeling approach to determine the Army's future direction in radiator designs. We will develop Computational Fluid Dynamics (CFD), Heat Transfer and Thermal Stress models to examine the significance of several engineering areas and optimize the direction for future radiator designs. The engineering will include: Gas Fin Design, Liquid Tube Design, Liquid Inlet Design, Liquid Outlet Design, Liquid Inlet Header Design, Liquid Outlet Header Design, Gas Inlet Design, Gas Outlet Design, Lance Offset Design, Two-Phase Flow, Advanced Heat Transfer Liquids, Metals and Costs. Our research will allow Army engineers to ascertain the influence of previously unstudied areas such as advanced fluids, header design, gas matrix design and two-phase flow. This project will encompass a broad range of advanced thermal fluid radiator problems. It will recommend areas that are cost effective and should be expanded. Engineering solutions will not be limited to computerized models and all our engineering tools will be used to develop solutions and directions. Additionally, a prototype design will be developed from the preliminary CFD models and will be expanded in Phase II. These CFD and design techniques will improve heat transfer and fluid flow modeling in military and civilian markets. Applications for radiators include: automotive, aerospace, trucking, taxis, mining, ambulances, food processing, fire trucks and process machinery.