hydrodynamic drag

简明释义

水动力阻力

英英释义

例句

1.The research focused on how hydrodynamic drag 水动力阻力 affects underwater vehicles.

研究集中在水动力阻力如何影响水下车辆。

2.Engineers conducted tests to measure the hydrodynamic drag 水动力阻力 on various hull shapes.

工程师进行了测试，以测量不同船体形状的水动力阻力。

3.Innovative materials can help reduce hydrodynamic drag 水动力阻力 in marine applications.

创新材料可以帮助减少海洋应用中的水动力阻力。

4.The design of the new boat aims to minimize hydrodynamic drag 水动力阻力 for better fuel efficiency.

新船的设计旨在最小化水动力阻力以提高燃油效率。

5.Reducing hydrodynamic drag 水动力阻力 is crucial for competitive swimming swimsuits.

减少水动力阻力对竞技游泳的泳衣至关重要。

作文

Understanding the concept of hydrodynamic drag is essential in various fields, including engineering, marine biology, and environmental science. Hydrodynamic drag refers to the resistance experienced by an object as it moves through a fluid, such as water. This phenomenon is crucial for designing efficient ships, submarines, and even aquatic vehicles. The study of hydrodynamic drag helps engineers optimize the shapes of these vessels to minimize resistance and improve fuel efficiency.In essence, hydrodynamic drag can be broken down into two main components: form drag and skin friction. Form drag arises from the shape of the object and how it disrupts the flow of fluid around it. For instance, a streamlined shape will experience less form drag compared to a blunt one. On the other hand, skin friction is caused by the viscosity of the fluid and the surface roughness of the object. Both factors play a significant role in determining the overall hydrodynamic drag acting on an object.To illustrate this concept further, let’s consider a simple example: a fish swimming in water. The fish's body is designed to minimize hydrodynamic drag, allowing it to move swiftly and efficiently. Its streamlined shape reduces form drag, while its smooth scales help decrease skin friction. This adaptation is crucial for the fish's survival, as it allows for quick movements to evade predators and catch prey.In engineering applications, understanding hydrodynamic drag is vital for improving the performance of vessels. Engineers often use computational fluid dynamics (CFD) simulations to analyze the flow of water around different designs. By adjusting the shape and materials used in construction, they can significantly reduce hydrodynamic drag, leading to faster speeds and lower fuel consumption. This not only benefits the operators economically but also has positive implications for the environment by reducing emissions.Moreover, hydrodynamic drag is not limited to large vessels; it also affects smaller objects, such as underwater drones and recreational boats. For instance, a kayak with a pointed bow will glide through the water more efficiently than a flat-bottomed one, which experiences greater resistance. Understanding these principles allows manufacturers to create better products that enhance user experience and performance.In addition to practical applications, studying hydrodynamic drag can also provide insights into broader environmental issues. For example, researchers examine how hydrodynamic drag impacts sediment transport in rivers and oceans, influencing ecosystems and habitats. By understanding these interactions, scientists can develop strategies to mitigate erosion and protect vulnerable areas.In conclusion, hydrodynamic drag is a fundamental concept that spans multiple disciplines. From the natural world, where fish have evolved to minimize resistance, to the engineered environments of ships and submarines, understanding this phenomenon is crucial for innovation and sustainability. As we continue to explore the depths of our oceans and improve our technological capabilities, the importance of hydrodynamic drag will only grow, highlighting the intricate relationship between design, efficiency, and nature.

理解水动力阻力的概念在工程、海洋生物学和环境科学等多个领域中至关重要。水动力阻力是指物体在流体（如水）中移动时所经历的阻力。这一现象对于设计高效的船只、潜艇甚至水上交通工具至关重要。对水动力阻力的研究帮助工程师优化这些船只的形状，以最小化阻力并提高燃油效率。从本质上讲，水动力阻力可以分为两个主要组成部分：形状阻力和表面摩擦。形状阻力源于物体的形状以及它如何干扰周围流体的流动。例如，流线型的形状与钝形相比，会经历更少的形状阻力。另一方面，表面摩擦则是由于流体的粘性和物体表面的粗糙度引起的。这两个因素在决定作用于物体的整体水动力阻力时发挥着重要作用。为了进一步说明这一概念，让我们考虑一个简单的例子：鱼在水中游泳。鱼的身体设计旨在最小化水动力阻力，使其能够迅速有效地移动。其流线型的形状减少了形状阻力，而光滑的鳞片有助于降低表面摩擦。这种适应对鱼的生存至关重要，因为它允许快速移动以躲避捕食者和捕捉猎物。在工程应用中，理解水动力阻力对于提高船只性能至关重要。工程师通常使用计算流体动力学（CFD）模拟来分析水流在不同设计周围的流动。通过调整形状和施工材料，他们可以显著减少水动力阻力，从而提高速度并降低燃料消耗。这不仅给运营商带来了经济利益，还有助于通过减少排放来保护环境。此外，水动力阻力不仅限于大型船只，它也影响较小的物体，如水下无人机和休闲船只。例如，尖头的皮划艇在水中滑行时比平底的皮划艇更有效率，因为后者会经历更大的阻力。理解这些原理使制造商能够创造出更好的产品，从而提升用户体验和性能。除了实际应用之外，研究水动力阻力还可以提供对更广泛环境问题的见解。例如，研究人员研究水动力阻力如何影响河流和海洋中的沉积物运输，从而影响生态系统和栖息地。通过理解这些相互作用，科学家们可以制定减轻侵蚀和保护脆弱地区的策略。总之，水动力阻力是一个跨越多个学科的基本概念。从自然界中鱼类如何进化以最小化阻力，到船只和潜艇的工程环境，理解这一现象对于创新和可持续发展至关重要。随着我们继续探索海洋深处并提高技术能力，水动力阻力的重要性只会增加，突显设计、效率与自然之间的复杂关系。