pressure drag

简明释义

压差阻力

英英释义

例句

1.Reducing pressure drag 压力阻力 is crucial for high-speed trains to maintain their speed.

减少压力阻力 pressure drag对于高速列车保持速度至关重要。

2.The design of the airplane wings greatly affects the amount of pressure drag 压力阻力 experienced during flight.

飞机机翼的设计对飞行过程中所经历的压力阻力 pressure drag有很大影响。

3.During wind tunnel testing, we measured the pressure drag 压力阻力 on various car models.

在风洞测试中，我们测量了各种车型的压力阻力 pressure drag。

4.To improve fuel efficiency, engineers must minimize pressure drag 压力阻力 on the vehicle.

为了提高燃油效率，工程师必须减少车辆上的压力阻力 pressure drag。

5.The streamlined shape of the boat helps reduce pressure drag 压力阻力 when moving through water.

船的流线型设计有助于减少在水中移动时的压力阻力 pressure drag。

作文

Understanding the concept of pressure drag is essential in various fields, particularly in aerodynamics and fluid dynamics. Pressure drag refers to the resistance experienced by an object moving through a fluid, such as air or water, due to differences in pressure around the object. This phenomenon plays a crucial role in the design of vehicles, aircraft, and even sports equipment, where minimizing drag can lead to improved performance and efficiency.When an object moves through a fluid, it displaces the fluid in front of it, creating a high-pressure region at the front and a low-pressure region at the back. The difference in pressure between these two regions results in a net force acting on the object, which we refer to as pressure drag (压力阻力). This drag force increases with the speed of the object and can significantly affect its overall motion.In the context of automobiles, engineers strive to design cars that are aerodynamic to reduce pressure drag. For instance, a car with a streamlined shape allows air to flow smoothly over its surface, minimizing the turbulent wake that forms behind it. This reduction in turbulence leads to lower pressure drag, enhancing fuel efficiency and performance. Innovations in automotive design often include features like rounded edges and underbody panels that help manage airflow more effectively.Similarly, in aviation, the principles of pressure drag are critical for aircraft design. Aircraft wings are designed to create lift while minimizing drag. The shape of the wing, known as an airfoil, is optimized to ensure that air flows over and under the wing in a way that reduces pressure drag. Engineers use computational fluid dynamics (CFD) simulations to analyze how changes in wing design can impact pressure drag and overall flight efficiency.In the world of sports, pressure drag also plays a significant role. Athletes and designers work together to create equipment that minimizes drag. For example, swimmers wear specially designed swimsuits that reduce pressure drag in the water, allowing them to move faster. Similarly, cyclists use aerodynamic helmets and clothing to cut down on pressure drag when racing against the clock.Understanding pressure drag is not only limited to vehicles and sports; it extends to natural phenomena as well. For instance, birds and fish have evolved body shapes that minimize pressure drag in their respective environments. Observing how these creatures interact with their surroundings can provide valuable insights into efficient movement through fluids.In conclusion, pressure drag (压力阻力) is a fundamental concept in the study of fluid dynamics that has practical applications across various fields. Whether it is in designing faster cars, more efficient airplanes, or competitive sports gear, understanding and managing pressure drag is vital for optimizing performance. As technology advances, the ability to analyze and reduce pressure drag will continue to play a key role in innovation and efficiency in many industries.

理解压力阻力这一概念在多个领域中至关重要，尤其是在空气动力学和流体动力学中。压力阻力是指物体在流体（如空气或水）中移动时，由于物体周围的压力差而产生的阻力。这一现象在车辆、飞机甚至运动器材的设计中起着关键作用，最小化阻力可以提高性能和效率。当一个物体在流体中移动时，它会在前方排开流体，形成一个高压区和一个低压区。前后这两个区域之间的压力差导致作用在物体上的净力，这就是我们所称的压力阻力（pressure drag）。这种阻力随物体速度的增加而增加，并可能显著影响其整体运动。在汽车的背景下，工程师努力设计出气动型的汽车，以减少压力阻力。例如，流线型的汽车形状允许空气平稳地流过其表面，从而最小化在其后方形成的湍流尾流。这种湍流的减少导致压力阻力的降低，从而提高燃油效率和性能。汽车设计中的创新通常包括圆滑的边缘和底盘面板等特征，帮助更有效地管理气流。同样，在航空领域，压力阻力的原理对飞机设计至关重要。飞机机翼的设计旨在创造升力，同时最小化阻力。机翼的形状被称为翼型，其优化确保空气以减少压力阻力的方式在机翼上方和下方流动。工程师使用计算流体动力学（CFD）模拟来分析机翼设计的变化如何影响压力阻力和整体飞行效率。在体育运动的世界中，压力阻力同样发挥着重要作用。运动员和设计师合作创建能够最小化阻力的设备。例如，游泳运动员穿着特别设计的泳衣，减少水中的压力阻力，使他们能更快地游泳。同样，骑自行车的人在计时赛中使用气动头盔和服装，以减少压力阻力。理解压力阻力不仅限于车辆和运动；它还扩展到自然现象。例如，鸟类和鱼类进化出能够最小化其各自环境中压力阻力的体型。观察这些生物如何与周围环境互动，可以为有效的流体运动提供有价值的见解。总之，压力阻力（压力阻力）是流体动力学研究中的一个基本概念，具有广泛的实际应用。无论是在设计更快的汽车、更高效的飞机还是竞争性体育器材方面，理解和管理压力阻力对于优化性能至关重要。随着技术的进步，分析和减少压力阻力的能力将继续在许多行业的创新和效率中发挥关键作用。