This study aims to investigate the phenomenon of brash ice re-gathering within ice-covered channels after an icebreaker passes through at different wind speeds. The research utilizes combined Computational Fluid Dynamics (CFD) and Discrete Element Method (DEM) numerical simulation techniques to model the behavior of brash ice when a vessel navigates through an ice-covered channel. Using a single-coupling strategy, the study calculates the forces exerted by the flow field on the brash ice and analyzes the formation process of the brash ice contraction. The numerical simulation results indicate that changes in the flow field around the vessel significantly affect the movement trajectories of the brash ice. Specifically, in the stern region, due to the recirculation effect, the brash ice is attracted to the center of the channel, forming a V-shaped contraction. The study demonstrates that the distance at which the brash ice begins to contract increases as the wind speed increases, moving farther away from the icebreaker. By optimizing navigation strategies, particularly by considering the characteristics of the flow field, the impact of brash ice contraction on channel navigability can be effectively reduced, thereby enhancing the safety and efficiency of navigation in ice-covered areas.