separation drag

简明释义

流体分离阻力

英英释义

例句

1.A smooth surface on the hull can help decrease separation drag 分离阻力 in marine applications.

船体上的光滑表面可以帮助减少海洋应用中的分离阻力。

2.The design of the aircraft wing aims to minimize separation drag 分离阻力 during high-speed flight.

飞机机翼的设计旨在减少高速度飞行时的分离阻力。

3.Engineers conducted tests to measure the separation drag 分离阻力 at various angles of attack.

工程师进行了测试，以测量不同攻角下的分离阻力。

4.The research focused on how separation drag 分离阻力 affects the performance of racing cars.

研究集中在分离阻力如何影响赛车的性能。

5.Reducing separation drag 分离阻力 can significantly improve fuel efficiency in vehicles.

减少分离阻力可以显著提高车辆的燃油效率。

作文

In the field of aerodynamics, understanding the various forces acting on an aircraft is crucial for efficient design and performance. One such force that significantly impacts an aircraft's drag is known as separation drag. This term refers to the drag that occurs when the smooth flow of air over a surface becomes disrupted, resulting in a turbulent wake behind the object. When an aircraft flies, air flows over its wings and body. Ideally, this airflow should remain attached to the surface to minimize drag. However, at certain angles of attack or speeds, the airflow can separate from the wing or fuselage, leading to increased resistance against the forward motion of the aircraft.The phenomenon of separation drag is particularly important during takeoff and landing phases of flight. During these critical moments, pilots must manage the angle of attack carefully to avoid stalling the aircraft. A stall occurs when the angle becomes too steep, causing the airflow to separate from the wing, which drastically increases separation drag and can lead to a loss of lift. This is why understanding and mitigating separation drag is vital for pilots and engineers alike.From an engineering perspective, reducing separation drag can lead to significant improvements in fuel efficiency and overall performance of the aircraft. Designers often employ various strategies to delay the onset of airflow separation. These may include shaping the wings with specific airfoil designs that encourage smoother airflow or adding devices like vortex generators that help keep the air attached to the wing longer. By managing separation drag, engineers can enhance the lift-to-drag ratio, which is a key factor in an aircraft's aerodynamic efficiency.Moreover, separation drag is not limited to aircraft; it also affects other vehicles, such as cars and boats. In automotive design, engineers strive to create streamlined shapes to reduce drag caused by turbulent airflow. Similarly, in marine engineering, hull designs are optimized to minimize separation drag in water, allowing vessels to move more efficiently through their medium.In conclusion, the concept of separation drag is fundamental to the study of aerodynamics and fluid dynamics. It highlights the importance of airflow management in various applications, from aviation to automotive and marine engineering. By understanding and addressing separation drag, engineers and pilots can enhance performance, improve safety, and achieve greater fuel efficiency. As technology advances, the methods to reduce separation drag will continue to evolve, leading to more efficient designs and better-performing vehicles across all modes of transportation.

在空气动力学领域，理解作用于飞机的各种力对于高效设计和性能至关重要。其中一个显著影响飞机阻力的力被称为分离阻力。这个术语指的是当空气在物体表面上的平滑流动被打断时所产生的阻力，导致物体后方形成涡流。当飞机飞行时，空气流过其机翼和机身。理想情况下，这种气流应该保持附着在表面上，以最小化阻力。然而，在某些攻角或速度下，气流可能会从机翼或机身分离，导致对飞机前进运动的阻力增加。分离阻力现象在起飞和着陆阶段尤为重要。在这些关键时刻，飞行员必须仔细管理攻角，以避免使飞机失速。失速发生在攻角变得过陡时，导致气流从机翼分离，这会急剧增加分离阻力并可能导致升力丧失。这就是为什么理解和减轻分离阻力对飞行员和工程师来说至关重要。从工程的角度来看，减少分离阻力可以显著改善飞机的燃油效率和整体性能。设计师通常采用各种策略来延迟气流分离的发生。这些策略可能包括采用特定气动外形设计的机翼，以促进更平稳的气流，或添加涡流发生器等装置，帮助气流在机翼上附着更长时间。通过管理分离阻力，工程师可以提高升阻比，这是飞机空气动力效率的关键因素。此外，分离阻力不仅限于飞机；它还影响其他交通工具，例如汽车和船只。在汽车设计中，工程师努力创造流线型形状以减少由涡流引起的阻力。同样，在海洋工程中，船体设计经过优化，以最小化水中的分离阻力，使船只能够更有效地穿越其介质。总之，分离阻力的概念是空气动力学和流体动力学研究的基础。它突显了在航空、汽车和海洋工程等各种应用中气流管理的重要性。通过理解和解决分离阻力，工程师和飞行员可以提高性能、改善安全性并实现更大的燃油效率。随着技术的进步，减少分离阻力的方法将继续发展，导致更高效的设计和在所有交通方式中表现更好的车辆。