free stream velocity

简明释义

自由流速度

英英释义

例句

1.The drag force experienced by the vehicle is directly related to the free stream velocity (自由流速).

车辆所经历的阻力与自由流速（自由流速）直接相关。

2.The free stream velocity (自由流速) affects the lift generated by the wings of the airplane.

自由流速（自由流速）影响飞机机翼产生的升力。

3.Engineers often calculate the free stream velocity (自由流速) to design more efficient turbines.

工程师们常常计算自由流速（自由流速）以设计更高效的涡轮机。

4.In wind tunnel testing, it is crucial to measure the free stream velocity (自由流速) accurately.

在风洞测试中，准确测量自由流速（自由流速）至关重要。

5.The aerodynamic performance of the aircraft is significantly influenced by the free stream velocity (自由流速).

飞机的气动性能受到自由流速（自由流速）的显著影响。

作文

In the study of fluid dynamics, one critical concept is the free stream velocity, which refers to the velocity of a fluid far away from any objects that may be affecting its flow. This term is particularly important in the analysis of airflow around aircraft, where understanding how air moves can significantly impact design and performance. The free stream velocity is essentially the speed at which the fluid is moving in an unobstructed environment, serving as a baseline for measuring the effects of various forces acting on the fluid as it encounters obstacles such as wings or fuselages.To fully grasp the significance of free stream velocity, it is essential to recognize its role in the equations governing fluid motion. For instance, the Navier-Stokes equations, which describe how fluids behave, often use free stream velocity as a reference point. This allows engineers and scientists to predict how changes in velocity will affect the pressure and movement of the fluid around different surfaces. By knowing the free stream velocity, one can calculate the lift and drag forces acting on an object, which are crucial for designing efficient vehicles.Furthermore, the free stream velocity is not constant; it can vary due to environmental factors such as altitude, temperature, and atmospheric pressure. For example, as an aircraft ascends, the free stream velocity could change due to the thinning atmosphere, impacting the aircraft's performance. Therefore, engineers must consider these variations when designing systems that rely on accurate fluid dynamics.In practical applications, measuring the free stream velocity can be done using various techniques, including wind tunnels and computational fluid dynamics (CFD) simulations. Wind tunnels allow researchers to create controlled environments where they can observe how objects interact with airflow at different velocities. Meanwhile, CFD uses complex algorithms to simulate fluid flow, providing insights into how free stream velocity affects overall performance without the need for physical prototypes.In conclusion, the concept of free stream velocity is fundamental in the field of fluid dynamics, especially in aerodynamics. It serves as a baseline for understanding how fluids behave when they encounter objects, allowing for more accurate predictions and designs. As technology advances, the methods for measuring and analyzing free stream velocity continue to improve, further enhancing our ability to design efficient and effective systems in various engineering fields. Understanding this term is crucial not only for engineers but also for anyone interested in the principles of fluid motion and its applications in real-world scenarios.

在流体动力学的研究中，一个关键的概念是自由流速，它指的是远离任何可能影响其流动的物体时流体的速度。这个术语在分析飞机周围的气流时尤为重要，因为理解空气如何移动可以显著影响设计和性能。自由流速本质上是流体在无障碍环境中移动的速度，作为测量流体在遇到机翼或机身等障碍物时各种作用力影响的基准。要充分理解自由流速的重要性，必须认识到它在流体运动方程中的作用。例如，描述流体行为的纳维-斯托克斯方程通常使用自由流速作为参考点。这使得工程师和科学家能够预测速度变化将如何影响流体在不同表面上的压力和运动。通过了解自由流速，人们可以计算作用在物体上的升力和阻力，这对于设计高效的车辆至关重要。此外，自由流速并不是恒定的；它可能因环境因素如海拔、温度和大气压力而变化。例如，随着飞机的升高，由于大气稀薄，自由流速可能会发生变化，从而影响飞机的性能。因此，工程师在设计依赖于准确流体动力学的系统时，必须考虑这些变化。在实际应用中，测量自由流速可以通过多种技术实现，包括风洞实验和计算流体动力学（CFD）模拟。风洞允许研究人员创造受控环境，以观察物体在不同速度下与气流的相互作用。同时，CFD利用复杂的算法模拟流体流动，提供关于自由流速如何影响整体性能的见解，而无需物理原型。总之，自由流速的概念在流体动力学领域，尤其是在空气动力学中，具有基础性的重要性。它作为理解流体在遇到物体时行为的基准，使得更准确的预测和设计成为可能。随着技术的进步，测量和分析自由流速的方法不断改进，进一步增强了我们在各个工程领域设计高效和有效系统的能力。理解这个术语不仅对工程师至关重要，也对任何对流体运动原理及其在现实场景中的应用感兴趣的人来说都是如此。