The quality of thin strip products is determined by the flow and heat transfer in a molten pool of twin-roll casting, thus it is of great significance to study the structure parameters of the delivery system, including the angle and height of end face nozzle, the angle and height of side nozzle as well as the taper angle of side nozzle. A methodology for simulation of twin-roll thin strips continuous casting process under uncertainty is presented by a three-dimensional numerical model of the flow field and solidification of liquid steel in the molten pool. A sampling-based stochastic model is developed to elucidate the effects of uncertainty in several nozzle structure parameters on the variability of maximum outlet temperature difference and maximum liquid surface turbulence kinetic energy. The results show that taper angle of side nozzle significantly affects the variability in maximum outlet temperature difference, and the uncertainty in angle and height of end face nozzle as well as the height of the side nozzle affects the variability in maximum liquid surface turbulence difference evidently.

薄带产品的质量取决于双辊铸件熔池中的流动和热传递，因此研究输送系统的结构参数，包括端面喷嘴的角度和高度，具有重要意义，侧喷嘴的角度和高度以及侧喷嘴的锥角。通过熔池内钢液流场和凝固过程的三维数值模型，提出了不确定条件下双辊薄带钢连铸过程的仿真方法。建立了基于采样的随机模型，以阐明几个喷嘴结构参数的不确定性对最大出口温度差和最大液面湍流动能变化的影响。