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剪切气流驱动下单个液滴在不同润湿表面上的运动研究
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Abstract:
单个液滴的运动和变形在自然界和工业界都有广泛应用。采用高速图像系统，研究了不同体积液滴在不同表面上受不同风速条件下的运动，将实验情况和数值模拟相结合计算了液滴在不同条件下所受的阻力大小进而计算拟合了一个阻力系数的经验公式。为了更深入了解液滴在不同条件下的运动，研究了不同条件下液滴运动的位移时间关系、最大润湿长度以及动态接触角变化，本研究可以为外力驱动下液滴的变形和运动提供参考。
The motion and deformation of individual droplets have wide applications in both nature and industry. Utilizing a high-speed imaging system, the motion of droplets with different volumes on various surfaces under different wind speed conditions was investigated. By combining experimental observations with numerical simulations, the drag force on droplets under different conditions was calculated, leading to the derivation of an empirical formula for the drag coefficient. To gain deeper insight into droplet motion under varying conditions, the displacement-time relationship, maximum wetted length, and dynamic contact angle variations during droplet motion were examined. This study provides a reference for understanding the deformation and motion of droplets driven by external forces.
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