In twin-roll strip casting process,transport phenomena of fluid in the molten pool directly affect the process stability and the quality of products.In order to elucidate the fundamental transport phenomena in twin-roll casting,a commercial software called ProCAST was employed to simulate the transient fluid flow and level profile behaviors during the early stage of the process in this study.The coupled set of governing differential equations for mass,momentum and energy balance were solved with the finite element method and the transient free surface problem was treated with a volume of fluids(VOF) approach.The effect of different delivery systems configuration on flow pattern,level profile in the pool was studied and analyzed in this paper. The new wedge metal delivery systems have been optimized for the twin-roll strip caster.It was shown that new type metal delivery systems had a preferable effect on the uniform distribution of fluid and level fluctuation in the pool.The simulation results also provide a valuable basis for the optimization of delivery system and process parameters during the initial pouring stage. In twin-roll strip casting process, transport phenomena of fluid in the molten pool directly affect the process stability and the quality of products. In order to elucidate the fundamental transport phenomena in twin-roll casting, a commercial software called ProCAST was employed to simulate the transient fluid flow and level profile behaviors during the early stage of the process in this study. The coupled set of mutually permeating differential equations for mass, momentum and energy balance were solved with the finite element method and the transient free surface problem was treated with a volume of fluids (VOF) approach. The effect of different delivery systems configuration on flow pattern, level profile in the pool was studied and analyzed in this paper. The new wedge metal delivery systems have been optimized for the twin-roll strip caster. It was shown that new type of metal delivery systems had a preferred effect on the uniform distribution of fluid and level fluctuation in the pool results also provide a valuable basis for the optimization of delivery system and process parameters during the initial pouring stage.