coefficient of drag

简明释义

阻力系数

英英释义

例句

1.The engineer calculated the coefficient of drag to optimize the car's aerodynamics.

工程师计算了阻力系数以优化汽车的气动性能。

2.The coefficient of drag for the new aircraft design was lower than the previous model.

新飞机设计的阻力系数低于以前的型号。

3.In wind tunnel tests, the coefficient of drag was measured for various shapes.

在风洞测试中，测量了不同形状的阻力系数。

4.Understanding the coefficient of drag is crucial for improving sports car performance.

理解阻力系数对于提高跑车性能至关重要。

5.A lower coefficient of drag can significantly improve fuel efficiency in vehicles.

较低的阻力系数可以显著提高车辆的燃油效率。

作文

The concept of the coefficient of drag is crucial in the fields of aerodynamics and fluid mechanics. It quantifies the resistance an object encounters as it moves through a fluid, such as air or water. Understanding this coefficient is essential for engineers and designers who aim to optimize the performance of vehicles, aircraft, and other objects that interact with fluids. To illustrate the significance of the coefficient of drag, consider the design of a car. Engineers strive to create vehicles that are not only aesthetically pleasing but also aerodynamic. The shape of a car plays a vital role in determining its coefficient of drag. A sleek, streamlined design reduces air resistance, allowing the car to move more efficiently. This efficiency translates into better fuel economy and improved speed, making it a key factor in automotive engineering.Similarly, in the aviation industry, the coefficient of drag is a fundamental parameter that affects the performance of aircraft. Pilots and engineers must understand how different shapes and configurations influence drag to ensure safe and efficient flight. For example, the wings of an airplane are designed to minimize the coefficient of drag while maximizing lift. By optimizing these designs, aircraft can achieve higher speeds and greater fuel efficiency, which are critical for commercial airlines.In addition to vehicles and aircraft, the coefficient of drag also plays a significant role in sports. Athletes, especially those in racing sports like cycling and swimming, are constantly looking for ways to reduce drag. Cyclists wear tight-fitting clothing and use aerodynamic helmets to minimize their coefficient of drag. Swimmers use specially designed suits to reduce water resistance, allowing them to glide through the water more efficiently. By understanding and manipulating the coefficient of drag, athletes can gain a competitive edge.Furthermore, the coefficient of drag is not a constant value; it varies depending on several factors, including the shape of the object, the surface roughness, and the flow conditions of the fluid. For instance, a smooth surface will generally have a lower coefficient of drag compared to a rough one. This variability means that engineers and scientists must conduct extensive testing and simulations to accurately determine the coefficient of drag for a given object in specific conditions.In conclusion, the coefficient of drag is a pivotal concept in various fields, influencing the design and performance of vehicles, aircraft, and even athletic gear. By understanding and optimizing this coefficient, professionals can enhance efficiency, safety, and performance across multiple domains. As technology advances, the methods for calculating and minimizing the coefficient of drag will continue to evolve, leading to innovations that push the boundaries of what is possible in engineering and beyond.

阻力系数的概念在空气动力学和流体力学领域至关重要。它量化了物体在流体（如空气或水）中移动时遇到的阻力。理解这个系数对于工程师和设计师来说是必不可少的，他们旨在优化车辆、飞机和其他与流体相互作用的物体的性能。为了说明阻力系数的重要性，可以考虑汽车的设计。工程师努力创造不仅美观而且具有空气动力学特性的车辆。汽车的形状在决定其阻力系数方面起着至关重要的作用。流线型的设计可以减少空气阻力，使汽车能够更有效地移动。这种效率转化为更好的燃油经济性和更高的速度，使其成为汽车工程中的关键因素。同样，在航空工业中，阻力系数是影响飞机性能的基本参数。飞行员和工程师必须了解不同形状和配置如何影响阻力，以确保安全和高效的飞行。例如，飞机的机翼设计旨在最大限度地减少阻力系数，同时最大化升力。通过优化这些设计，飞机可以实现更高的速度和更大的燃油效率，这对商业航空公司至关重要。除了车辆和飞机，阻力系数在体育运动中也起着重要作用。运动员，尤其是在赛车运动（如自行车和游泳）中的运动员，正在不断寻找减少阻力的方法。自行车手穿着紧身衣，使用空气动力学头盔来最小化他们的阻力系数。游泳运动员使用专门设计的泳衣来减少水的阻力，使他们能够更有效地在水中滑行。通过理解和操控阻力系数，运动员可以获得竞争优势。此外，阻力系数不是一个固定值；它会根据多个因素变化，包括物体的形状、表面粗糙度和流体的流动条件。例如，光滑的表面通常会比粗糙的表面具有更低的阻力系数。这种变异性意味着工程师和科学家必须进行广泛的测试和模拟，以准确确定特定条件下给定物体的阻力系数。总之，阻力系数是多个领域的关键概念，影响着车辆、飞机甚至运动装备的设计和性能。通过理解和优化这个系数，专业人士可以提高多个领域的效率、安全性和性能。随着技术的进步，计算和最小化阻力系数的方法将继续发展，推动工程及其他领域的创新。