Pouring viscous fluid out of a tipped container in minimal time.
Pouring viscous fluid out of a tipped container in minimal time.
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DOI：
10.1103/physreve.84.035303
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发表时间：
2011-09
期刊：
影响因子：
--
通讯作者：
D. Takagi;H. Huppert
中科院分区：
文献类型：
--
作者：
D. Takagi;H. Huppert
清空部分装满粘性液体的容器可能是一个令人沮丧的缓慢过程。倾倒容器后，液体甚至需要一段时间才能开始排出，以便在内表面形成一层排水膜。为了研究容器的形状和倾角的影响，我们在两个简单的几何形状中预测了液体开始排放所需的时间。此外，对于沿平面或拐角驱动的流动，预计后续时间仍需排放的流体的体积将分别减小为t(-1/2)或t(-1)。我们将这些理论预测与实验室实验进行比较，并讨论如何才能最有效地倾倒粘性流体。
Emptying a container partially filled with viscous fluid can be a frustratingly slow process. It takes time for the fluid to even begin discharging after tipping the container to develop a draining film on the interior surface. To study the effects of the shape and the tipping angle of the container, we predict the time required for the fluid to begin discharging in two simple geometries. In addition, the volume of the fluid yet to be discharged at subsequent times is predicted to decrease as t(-1/2) or t(-1) for flow driven along a plane or corner, respectively. We compare these theoretical predictions with laboratory experiments and discuss how viscous fluids could be poured out most effectively.