NUMERICAL SIMULATION OF LI/SF6 COMBUSTION FLOW FIELD

In recent years, the high enthalpy value of the fuel combustion has been studied by a number of investigators in some specific conditions. A novel liquid-metal combustion system involving the reaction of lithium(Li) and sulfur hexafluoride(SF(6)) can release a lot of heat in a short time and is also known as the SCEPS(Stored Chemical Energy Propulsion Systems). Li/SF(6) Chemistry Heat Source System can provide heat to specific heat storage equipment, which can be a heat source of AMTEC (Alkali Metal Thermal to Electric Converter). AMTEC is a novel method of energy conversion, which is researched by many individuals and institutes. This paper researched on Combustion Flow Field in Li/SF(6) Chemistry Heat Source System. Used limited velocity chemical reaction model to simulate the process of physical and chemical, applied RNG k - epsilon and EDC model to calculate turbulence combustion flow. Through simulation, it obtained the character of flow field and the distribution of the products in 10 seconds and the affection of different conditions of mass flux and initial temperature, which provided a new way to study the combustion flow field in the Chemistry Heat Source System.