<p>Melt fiberization using a spinning wheel is a method for the high-value-added treatment of solid waste from metallurgical processes. In this paper, the volume of fluid (VOF) method was employed to numerically simulate the fluid spreading process on the spinning wheel surface, and physical experiments were conducted to validate the simulation's effectiveness. The thickness and velocity distribution characteristics of the liquid film on the wheel surface were analyzed, revealing the influence of wheel speed and fluid viscosity on the liquid film. Through regression analysis of the data, a predictive equation for the liquid film thickness at the contact position was established. The liquid film thickness on the wheel surface decreases exponentially with increasing circumferential angle, and there is a significant radial velocity gradient within the film. The radial velocity gradient is inversely proportional to the fluid viscosity—the higher the viscosity, the smaller the radial velocity gradient in the liquid film. A predictive equation for the liquid film thickness at the contact position was developed based on the data, expressed as <i>T</i>_<i>l</i> = 1.34 × Re^−0.31 × <i>q</i>^6.63, with a correlation coefficient of 0.89.</p> Graphical Abstract <p></p>