基于CFD仿真的跳台滑雪空中飞行姿态优化及其验证研究

跳台滑雪的空中飞行阶段姿态及稳定性决定了飞行的距离. 本文作者以跳台滑雪的人/板系统为研究对象，探究其在空中飞行阶段所受到的空气阻力以及保持平衡所需要克服的力矩问题. 结合空中飞行过程中人/板系统姿态的主要参数，即雪板间相对倾角、身体与雪板夹角以及V型夹角进行仿真分析，采用正交试验方法，获取不同因素角度下的总升阻比、滑雪板升阻比、身体力矩以及滑雪板力矩. 仿真结果表明主要参数的耦合关系对人/板系统的总升阻比、滑雪板升阻比、身体力矩以及滑雪板力矩均会产生影响，并能间接的影响到运动员空中飞行过程中的气动特性以及姿态稳定性. 通过分析得到人/板系统的最优组合为雪板间相对倾角为120°，身体与雪板夹角为26°，V型夹角为32°. 最后利用视频解析法验证了本研究结果的可靠性.The attitude and stability during the airborne flight phase of ski jumping determine the flight distance. The authors take the human-ski system of ski jumping as the research object, and investigate the aerodynamic drag it experiences during the airborne flight phase as well as the torque issues that need to be overcome to maintain balance. Combining the main attitude parameters of the human-ski system during airborne flight—namely the relative inclination between skis, the angle between the body and the skis, and the V-shaped angle—this study conducts simulation analysis and adopts the orthogonal test method to obtain the total lift-drag ratio, ski lift-drag ratio, body torque, and ski torque under different factor angles. The simulation results demonstrate that the coupling relationship of the main parameters affects the total lift-drag ratio, ski lift-drag ratio, body torque, and ski torque of the human-ski system, and can indirectly influence the aerodynamic characteristics and attitude stability of athletes during airborne flight. The optimal combination of the human-ski system derived from the analysis is a relative inclination between skis of 120°, a body-to-ski angle of 26°, and a V-shaped angle of 32°. Finally, the video analysis method is employed to verify the reliability of the research findings.

搜集汇总

背景与挑战

背景概述

该数据集基于计算流体动力学（CFD）仿真，研究跳台滑雪人/板系统在空中飞行阶段的姿态优化，重点分析雪板间相对倾角、身体与雪板夹角和V型夹角等参数对升阻比和力矩的影响，并通过正交试验和视频解析法验证了最优姿态组合的可靠性，旨在提升气动性能和飞行稳定性。