Since the 1960s, scientists have been fascinated with shampoo's fluid dynamics.

自20世纪60年代以来，科家们一直着迷于洗发水的流。

Hydrodynamic and aligned with a layer of grease, the shell is completely waterproof.

符合流而且附有一层油脂它的硬壳完全防水。

This hydrodynamic finding could help engineers design systems that rapidly drain reservoirs, regardless of size.

这项流的发现许有助于工程师们设计出任何尺寸可快速排水的蓄水池。

The work was presented at a meeting of the American Physical Society's Division of Fluid Dynamics.

这项研究已在《美国物理协会流分会会刊》杂志上发表。

Among the hardest patterns we've tried to understand is the concept of turbulent flow in fluid dynamics.

流里湍流的概念就们探求过的最艰深的模式之一。

He had to be acquainted with meteorology and know enough fluid dynamics to make sure he didn't overload his ship with booty.

他还得熟悉气象，并掌握足够的流知识，以确保他的船没有因战利品而超载。

And in the world of fluid dynamics, if I pulse an air jet in one direction I basically pull air with it.

在流领域，如果向一个方向呼出空气流，其实在拉空气。”

So I love fluid dynamics so much.

非常热爱流。

He thinks the answer is to be found in a field called magnetohydrodynamics.

他认为答案可以在磁流领域中找到。

You know, holy smokes, you can look at insects and study fluid dynamics.

你知道，天哪，你可以观察昆虫并研究流。

But then CFD, wind tunnel testing and then reviewing those results and going back around.

但随后计算流模拟、风洞测试，再分析这些测试结果，然后不断循环改进。

In both cases,   complex fluid dynamics are in play, giving rise to eerily similar characteristics.

在这两种情况下，复杂的流都在发挥作用，从而产生了惊人的相似特征。

He therefore has a plan to use magnetohydrodynamics to guide that plasma away from vulnerable areas.

因此，他计划利用磁流引导等离子远离脆弱区域。

So it's over a timescale of a few orbits, you do a hydrodynamic simulation, right?

所以在几轨道的时间尺度上，你会做一个流模拟，对吧？

Their scientific work in plasma fluid dynamicswill have deep implications for how we understand our universe.

他们在等离子流方面的科工作将对们如何理解宇宙产生深远的影响。

You see, the fundamental equations describing fluid dynamics, the Navier-Stokes equations, are famously challenging to understand.

你看，描述流的基本方程，即纳维-斯托克斯方程， 出了名的难以理解。

Because they happen to be my area of expertise as an engineer, in fluid dynamics.

这恰好的专业领域 作为一名工程师，在流方面。

So, in order to grasp the essentials of fluid dynamics, let’s just do some pretending, shall we?

那么，为了掌握流的本质， 让们假装一下， 好吗？

This program simulates complex gravitational and hydrodynamic forces that come into play during and after a collision.

该程序模拟了碰撞期间及之后起作用的复杂引和流。

Today, that concept is known as Pascal's Principle, and it's the reason hydraulics are so useful.

今天，这条定律被称为帕斯卡定律， 这就流如此有效的原因。