date: 2025-12-1

q = \frac{18\pi}{(2g(\rho_0 - \rho'))^{1/2}} \cdot \frac{d}{U} \cdot \left(\frac{l}{t_g}\right)^{3/2} \cdot \left(\frac{\eta}{1 + \frac{b}{\rho_0r}}\right)^{3/2}

r = \sqrt{\frac{9\eta v_t}{2(\rho_0 - \rho')g}}