Competitive cycling is one of the most popular sports in the world. In order to study the correlation between the drag and dynamic pressure field distribution of competitive cyclists at different velocity, the SST k-ω model was used for CFD numerical simulation in this work. The dynamic pressure field around the cyclist's system is analyzed, and the key monitoring points are set up and the dynamic pressure change trend at different velocity and the change trend of the steadystate dynamic pressure difference of the monitoring points are calculated. The results show that the variation trend of the dynamic pressure difference at different velocity is highly consistent with the variation trend of the drag coefficient, indicating that the dynamic pressure difference is an important source of drag.
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