Ski-jump trajectory based on take-off velocity

• Published in: Journal of hydrodynamics. Series B Vol. 28; no. 1; pp. 166 - 169
• Main Author: 吴建华 许准 姚莉 马飞
• Format: Journal Article
• Language: English
• Published: Singapore Elsevier Ltd 01-02-2016; Springer Singapore
• Subjects: Deflection; Deflectors; Engineering; Engineering Fluid Dynamics; Fluid dynamics; Fluid flow; Hydrodynamics; Hydrology/Water Resources; Letter; Numerical and Computational Physics; Sensitivity analysis; sensitivity analysis of parameters; Simulation; take-off velocity; Takeoff; Trajectories; trajectory; triangular-shaped flip bucket; 偏转角度; 影响因素; 敏感性分析; 最大相对误差; 滑雪; 起跳; 起飞速度; 跳跃; triangular-shaped flip bucket; sensitivity analysis of parameters; take-off velocity; trajectory
• ISSN: 1001-6058; 1878-0342
• DOI: 10.1016/S1001-6058(16)60618-2

The theoretical method estimating ski-jump trajectory was paid attention to and modified. The present method is based on the effects of the take-off velocity and the angle in the sensitivity analysis of parameters. The experiments are conducted for a triangular-shaped flip bucket in order to reveal the relationships between the take-off velocity and its influencing factors. The results show that, the take-off velocity has a much larger effect on the impact point than the take-off angle. The take-off velocities of both upper and lower trajectories are all functions of the approach flow Froude number, the deflector height and the deflection angle, especially, the results of the deflection angle of 25° could be directly used when this angle is larger than 25° Meanwhile, this method is checked and the maximum relative errors of both U calx and L_（calx） are 5.1% and 5.6%, respectively.