wake drag

简明释义

伴流阻力

英英释义

例句

1.The racing team implemented new hull designs to reduce wake drag 尾流阻力 during competitions.

赛车队采用了新的船体设计，以减少比赛期间的wake drag 尾流阻力。

2.The boat's speed was affected by the wake drag 尾流阻力 created by the larger vessel ahead.

船的速度受到前方大型船只产生的wake drag 尾流阻力的影响。

3.To minimize wake drag 尾流阻力, the captain adjusted the boat's trim before entering the race.

为了最小化wake drag 尾流阻力，船长在参加比赛前调整了船的修整。

4.Engineers are studying how wake drag 尾流阻力 affects fuel efficiency in ships.

工程师们正在研究wake drag 尾流阻力如何影响船舶的燃油效率。

5.Understanding wake drag 尾流阻力 can help improve the performance of recreational boats.

理解wake drag 尾流阻力可以帮助提高休闲船的性能。

作文

Understanding the concept of wake drag is essential for anyone interested in fluid dynamics and engineering. In simple terms, wake drag refers to the resistance experienced by an object moving through a fluid, which is caused by the turbulent wake it leaves behind. This phenomenon is particularly significant in the design of vehicles, aircraft, and marine vessels, where minimizing drag is crucial for improving efficiency and performance.When an object moves through a fluid, it displaces some of that fluid, creating a region of turbulence behind it known as the wake. The size and shape of this wake depend on various factors, including the object's speed, shape, and the properties of the fluid itself. As the fluid flows back into the wake, it creates a low-pressure area that results in a force opposing the motion of the object, which is what we refer to as wake drag.For example, consider a boat moving through water. As the boat travels, it pushes water ahead of it and creates a wake behind it. The energy lost to the turbulent flow in this wake is what contributes to the wake drag, making it harder for the boat to maintain speed. Engineers often use streamlined designs to reduce the size of the wake and, consequently, the wake drag. This is why many modern boats and ships have sleek, elongated shapes that help them cut through the water more efficiently.In aviation, wake drag plays a similarly critical role. Aircraft generate a considerable amount of turbulence as they fly, which can affect their performance and fuel efficiency. By understanding and mitigating wake drag, aerospace engineers can design aircraft that are not only faster but also consume less fuel. Techniques such as winglets and advanced aerodynamic shapes are employed to manage the airflow around the aircraft, reducing the size of the wake and the resulting drag.The implications of wake drag extend beyond just vehicles and aircraft; they also affect sports and recreational activities. For instance, swimmers and cyclists strive to minimize their wake drag to enhance their speeds. Swimmers often adopt specific body positions and techniques to reduce the turbulence created by their movements in the water. Similarly, cyclists wear tight-fitting clothing and use aerodynamic bike designs to reduce drag caused by air resistance, which includes wake drag from their own bodies as well as from other cyclists.In conclusion, wake drag is a fundamental concept in fluid dynamics that significantly impacts the design and performance of various objects moving through fluids. Whether it is in the context of transportation, sports, or engineering, understanding and managing wake drag is critical for enhancing efficiency and achieving optimal performance. As technology continues to advance, the study of wake drag will remain a vital area of research, leading to innovations that improve our ability to navigate through fluids with minimal resistance.

理解wake drag的概念对任何对流体动力学和工程感兴趣的人来说都是至关重要的。简单来说，wake drag是指物体在流体中移动时所经历的阻力，这种阻力是由于其后方产生的湍流尾流引起的。这一现象在车辆、飞机和船舶的设计中尤为重要，因为减少阻力对于提高效率和性能至关重要。当一个物体在流体中移动时，它会排开一些流体，从而在其后方形成一个被称为尾流的湍流区域。这个尾流的大小和形状取决于多种因素，包括物体的速度、形状以及流体本身的特性。当流体流回尾流时，会形成一个低压区域，从而产生一个与物体运动相反的力，这就是我们所称的wake drag。例如，考虑一艘在水中移动的船。当船行驶时，它会将水向前推，并在其后方形成尾流。由于这个尾流中的湍流流动所损失的能量就是造成wake drag的原因，使得船难以保持速度。工程师们通常使用流线型设计来减少尾流的大小，从而降低wake drag。这就是为什么许多现代船只和舰艇具有光滑、细长的形状，以帮助它们更有效地切割水面。在航空领域，wake drag同样扮演着关键角色。飞机在飞行时会产生大量的湍流，这可能会影响其性能和燃油效率。通过理解和减轻wake drag，航空工程师可以设计出不仅速度更快而且燃油消耗更少的飞机。采用如翼尖小翼和先进的空气动力学形状等技术来管理飞机周围的气流，从而减少尾流的大小和随之而来的阻力。wake drag的影响不仅限于交通工具和飞机；它们还影响着体育和休闲活动。例如，游泳者和自行车手努力最小化他们的wake drag以提高速度。游泳者通常采取特定的身体姿势和技巧，以减少在水中运动所产生的湍流。同样，自行车手穿着紧身衣服，使用空气动力学设计的自行车，以减少由空气阻力引起的阻力，其中包括来自他们自己身体的wake drag以及其他骑行者的阻力。总之，wake drag是流体动力学中的一个基本概念，对各种在流体中移动的物体的设计和性能产生了重大影响。无论是在交通、体育还是工程的背景下，理解和管理wake drag对提高效率和实现最佳性能至关重要。随着技术的不断进步，wake drag的研究将继续是一个重要的研究领域，推动改善我们在流体中以最小阻力航行的能力的创新。