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单词 Stokes Law
释义

Stokes Law

中文百科

斯托克斯定律 Stokes' law

(重定向自Stokes Law)

球形物体在流体中运动所受到的阻力,等于该球形物体的半径、速度、流体的黏度与6π的乘积。这个定律叫做斯托克斯定律

F_d = 6 \pi\, \eta\, r\, V \,

如果物体在流体中因自身的重量而下落,则其最终速度为:

V_s = \frac{2}{9}\frac{r^2 g (\rho_p - \rho_f)}{\eta}
英语百科

Stokes' law 斯托克斯定律

(重定向自Stokes Law)
Creeping flow past a falling sphere in a fluid (e.g., a droplet of fog falling through the air): streamlines, drag force Fd and force by gravity Fg.

In 1851, George Gabriel Stokes derived an expression, now known as Stokes' law, for the frictional force – also called drag force – exerted on sphere/spherical objects with very small Reynolds numbers (i.e. very small particles) in a viscous fluid. Stokes' law is derived by solving the Stokes flow limit for small Reynolds numbers of the Navier–Stokes equations:

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更新时间:2025/6/23 1:09:06