77.29
The purpose of the study – to study the interaction between the athlete and the air environment based on the development of mathematical models and to determine the aerodynamic characteristics of the ski jumper during the acceleration phase. Research methods and organization. The study involved highly qualified ski jumpers. Instrumental methods of 3-D analysis using Qualisys, AMTI tensoplatforms, TC2 3D Body Scanner NX-16, FARO "Focus-3D" laser scanner, as well as modeling packages FlowVision and SIMULIA Abaqus were employed during the research. Research results and conclusions. During the work, numerical models of athletes were created to analyze the dynamics of ski jumping during the acceleration phase in order to determine aerodynamic characteristics. Based on the results obtained from the study of airflow movement and friction forces on the "athlete-skis" system model, it is evident that the primary contribution to drag force for the three considered acceleration positions is made by the pressure force generated by the skier's body, followed by the friction force. The pressure and friction forces generated by the skis during the acceleration phase are negligible. It has been established that to reduce drag force, greater attention should be paid to reducing pressure on the athlete rather than reducing the friction force of the airflow.
aerodynamics, ski jumping, modeling, FlowVision
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