stagnation point

简明释义

停滞点

英英释义

例句

1.Identifying the stagnation point 滞止点 is essential for optimizing the performance of a rocket.

识别滞止点对于优化火箭性能至关重要。

2.The stagnation point 滞止点 on a car's windshield is crucial for understanding how water droplets behave.

汽车挡风玻璃上的滞止点对于理解水滴的行为至关重要。

3.Engineers use computational fluid dynamics to simulate the stagnation point 滞止点 in various aerodynamic shapes.

工程师使用计算流体动力学来模拟各种气动形状中的滞止点。

4.In fluid dynamics, the airfoil design must consider the stagnation point 滞止点 where the airflow comes to a complete stop.

在流体动力学中，翼型设计必须考虑到空气流动完全停止的滞止点。

5.The stagnation point 滞止点 can be affected by changes in speed and angle of attack in aircraft.

在飞机中，速度和攻角的变化会影响滞止点。

作文

In the study of fluid dynamics, the term stagnation point refers to a specific location in a fluid flow where the velocity of the fluid is zero. At this point, the kinetic energy of the fluid is converted entirely into potential energy, resulting in a pressure increase. Understanding the concept of stagnation point is crucial for engineers and scientists, especially when designing aircraft, cars, and other vehicles that move through air or water.For instance, consider an airplane wing. As air flows over the wing, it splits at the leading edge. The air that moves over the top of the wing travels faster than the air below the wing, creating a difference in pressure. However, right at the leading edge of the wing, there is a stagnation point where the air comes to a complete stop before it is redirected either over or under the wing. This phenomenon is essential for generating lift, which allows the airplane to fly.The concept of stagnation point can also be observed in everyday life. For example, when a river flows and encounters a large rock, the water in front of the rock slows down significantly, creating a stagnation point at the front of the obstruction. Here, the water pressure builds up, which can lead to erosion downstream as the water rushes away from the rock.Moreover, the stagnation point has implications in various fields beyond fluid dynamics. In economics, for instance, a stagnation point can refer to a situation where an economy experiences little or no growth for an extended period. This economic stagnation can result from various factors, including high unemployment rates, low consumer spending, and decreased investment. Understanding these dynamics can help policymakers devise strategies to stimulate economic growth and move past the stagnation point.In conclusion, the term stagnation point encompasses a variety of meanings across different disciplines. Whether in fluid dynamics, where it describes a point of zero velocity, or in economics, where it signifies a lack of growth, the stagnation point serves as a critical indicator of balance and change. By studying and understanding these points, we can better navigate the complexities of both physical phenomena and economic landscapes. Thus, recognizing the significance of the stagnation point can lead to more effective designs in engineering and more informed decisions in economic policy.

在流体动力学的研究中，术语stagnation point指的是流体流动中的一个特定位置，在这个位置上，流体的速度为零。在这一点上，流体的动能完全转化为势能，导致压力增加。理解stagnation point的概念对工程师和科学家来说至关重要，尤其是在设计飞机、汽车以及其他通过空气或水移动的车辆时。例如，考虑一下飞机的机翼。当空气在机翼上方流动时，它在前缘处分开。流经机翼顶部的空气速度比机翼下方的空气快，从而产生了压力差。然而，在机翼的前缘，存在一个stagnation point，在此处，空气在被重新导向上方或下方之前完全停止。这种现象对于产生升力至关重要，使飞机能够飞行。stagnation point的概念也可以在日常生活中观察到。例如，当一条河流遇到一块大石头时，石头前面的水流速度显著减慢，形成了在障碍物前的stagnation point。在这里，水压增大，这可能导致下游的侵蚀，因为水从石头处急速流走。此外，stagnation point在流体动力学以外的各个领域都有其影响。例如，在经济学中，stagnation point可以指一个经济体在较长时间内经历几乎没有增长的情况。这种经济停滞可能由多种因素造成，包括高失业率、低消费支出和投资减少。理解这些动态可以帮助政策制定者制定刺激经济增长的策略，以突破stagnation point。总之，术语stagnation point在不同学科中包含多种含义。无论是在流体动力学中，它描述了零速度的点；还是在经济学中，它标志着缺乏增长的状态，stagnation point都是平衡与变化的重要指示。通过研究和理解这些点，我们可以更好地应对物理现象和经济环境的复杂性。因此，认识到stagnation point的重要性，可以在工程设计和经济政策决策中带来更有效的结果。