stagnation point

简明释义

驻点

英英释义

例句

1.The stagnation point in the pipeline is critical for measuring pressure changes.

管道中的滞止点对于测量压力变化至关重要。

2.The air pressure at the front of the airplane is highest at the stagnation point, where the airflow comes to a complete stop.

飞机前方的气压在滞止点处最高，此处气流完全停止。

3.When analyzing the flow around a car, the stagnation point indicates where the air hits the surface directly.

在分析汽车周围的气流时，滞止点指示空气直接撞击表面的位置。

4.In fluid dynamics, understanding the stagnation point can help engineers design more efficient shapes for vehicles.

在流体动力学中，理解滞止点可以帮助工程师设计更高效的车辆形状。

5.At the stagnation point of a river bend, sediment tends to accumulate due to reduced flow velocity.

在河流弯道的滞止点，由于流速降低，沉积物往往会积累。

作文

In the realm of physics and fluid dynamics, the term stagnation point refers to a specific location in a flow field where the velocity of the fluid is zero. This concept is particularly significant when analyzing the behavior of fluids around objects, such as an airplane wing or a car. At the stagnation point (停滞点), the kinetic energy of the fluid is converted into potential energy, which leads to a rise in pressure. Understanding this phenomenon is crucial for engineers and scientists who design vehicles and structures that interact with fluid flows.For instance, consider an airplane wing. As air flows over the wing, it splits at the leading edge. One part of the air moves over the top surface while the other moves along the bottom. At a certain point on the wing, known as the stagnation point (停滞点), the air comes to a complete stop before it is redirected either upward or downward. This point is essential for generating lift, as the pressure difference between the upper and lower surfaces of the wing creates the necessary force to elevate the aircraft into the sky.Moreover, the stagnation point (停滞点) can also be observed in various engineering applications, such as the design of nozzles in rocket engines. The nozzle is designed to accelerate the flow of gases to produce thrust. At the entrance of the nozzle, there exists a stagnation point (停滞点) where the gas velocity is momentarily zero before being accelerated to supersonic speeds. This transition is critical for the efficiency of the engine and the overall performance of the rocket.The concept of the stagnation point (停滞点) extends beyond fluid dynamics into other fields, including economics. In economic terms, a stagnation point (停滞点) can refer to a situation where an economy experiences little to no growth over a period of time. Just like in fluid dynamics, where the flow ceases at a stagnation point (停滞点), an economy may reach a point where investment, production, and consumption levels plateau. This stagnation can lead to various challenges, such as unemployment and reduced consumer confidence, necessitating policy interventions to stimulate growth.In conclusion, the term stagnation point (停滞点) serves as a vital concept in both physical sciences and economics. Whether it is in the study of fluid dynamics or the analysis of economic performance, understanding the implications of a stagnation point (停滞点) allows professionals to devise strategies for improvement and innovation. By recognizing these critical points in different contexts, we can better navigate the complexities of both the natural world and human society, striving for progress and development in all areas of life.

在物理学和流体动力学的领域中，术语stagnation point指的是流场中一个特定的位置，在这个位置上流体的速度为零。这个概念在分析流体在物体周围的行为时尤为重要，例如飞机机翼或汽车。在stagnation point（停滞点），流体的动能转化为势能，这导致压力上升。理解这一现象对设计与流体流动相互作用的交通工具和结构的工程师和科学家至关重要。例如，考虑一个飞机机翼。当空气流过机翼时，它在前缘处分开。一部分空气沿着顶部表面流动，而另一部分则沿着底部流动。在机翼上的某一点，称为stagnation point（停滞点），空气完全停止，然后被重新导向向上或向下。这个点对于产生升力至关重要，因为机翼的上下表面之间的压力差产生了将飞机提升到空中的必要力量。此外，stagnation point（停滞点）也可以在各种工程应用中观察到，例如火箭发动机喷嘴的设计。喷嘴的设计旨在加速气体流动以产生推力。在喷嘴的入口处，存在一个stagnation point（停滞点），在这里气体速度暂时为零，然后被加速到超音速。这一过渡对于发动机的效率和火箭的整体性能至关重要。stagnation point（停滞点）的概念不仅限于流体动力学，还扩展到其他领域，包括经济学。从经济学的角度来看，stagnation point（停滞点）可以指一个经济在一段时间内几乎没有增长的情况。就像在流体动力学中，流动在stagnation point（停滞点）处停止一样，经济可能达到一个投资、生产和消费水平停滞的点。这种停滞可能导致失业和消费者信心下降等各种挑战，因此需要政策干预来刺激增长。总之，术语stagnation point（停滞点）在物理科学和经济学中都是一个重要概念。无论是在流体动力学的研究中还是在经济表现的分析中，理解stagnation point（停滞点）的影响使专业人士能够制定改善和创新的策略。通过识别不同背景下的这些关键点，我们可以更好地应对自然世界和人类社会的复杂性，努力在生活的各个领域追求进步和发展。