boundary layer

简明释义

边界层

英英释义

例句

1.The boundary layer can be influenced by surface roughness and flow speed.

边界层可能受到表面粗糙度和流速的影响。

2.Researchers study the boundary layer to improve environmental models.

研究人员研究边界层以改善环境模型。

3.In aerodynamics, the boundary layer affects the lift and drag on an aircraft.

在空气动力学中，边界层会影响飞机的升力和阻力。

4.Engineers must consider the boundary layer when designing efficient wind turbines.

工程师在设计高效风力涡轮机时必须考虑边界层。

5.The concept of the boundary layer is essential in understanding fluid dynamics.

理解流体动力学时，边界层的概念至关重要。

作文

The concept of the boundary layer is essential in fluid dynamics and plays a significant role in various engineering applications. In simple terms, the boundary layer refers to the thin region of fluid that is in immediate contact with a solid surface, such as the skin of an airplane wing or the surface of a ship hull. Within this layer, the effects of viscosity are significant, and the flow characteristics differ from those in the free stream of the fluid. Understanding the boundary layer is crucial for engineers and scientists because it affects drag, heat transfer, and mass transfer phenomena. For instance, in aerodynamics, the behavior of the boundary layer can determine how efficiently an aircraft flies. A well-managed boundary layer can reduce drag, leading to better fuel efficiency and improved performance. Conversely, if the boundary layer becomes turbulent, it can increase drag and negatively impact the aircraft's performance.In the field of civil engineering, the boundary layer concept is also applied when analyzing wind loads on buildings and structures. Wind flowing over a building creates a boundary layer that affects the pressure distribution around the structure. Understanding this phenomenon helps engineers design buildings that can withstand high winds and prevent structural failure.Moreover, the boundary layer is not limited to air and water; it can also be observed in other contexts, such as heat exchangers and chemical reactors. In these systems, the boundary layer influences the rate of heat transfer and reaction rates, which are critical for optimizing performance and efficiency.To analyze the boundary layer, researchers often use mathematical models and simulations. These tools help predict how the boundary layer develops under various conditions, providing valuable insights for design and optimization. The study of the boundary layer has led to advancements in technology, including the development of smoother surfaces and specialized coatings that can control the flow characteristics of fluids.In conclusion, the boundary layer is a fundamental concept in fluid dynamics that has far-reaching implications across various fields. Its understanding is vital for improving the efficiency and safety of vehicles, structures, and industrial processes. As technology advances, the study of the boundary layer will continue to evolve, leading to innovative solutions and designs that enhance performance in numerous applications.

边界层的概念在流体动力学中至关重要，并在各种工程应用中发挥着重要作用。简单来说，边界层是指与固体表面（如飞机机翼的表面或船体的表面）直接接触的流体的薄区域。在这个层内，粘性效应显著，流动特性与流体的自由流动状态不同。理解边界层对于工程师和科学家至关重要，因为它影响阻力、热传递和质量传递现象。例如，在空气动力学中，边界层的行为可以决定飞机飞行的效率。良好管理的边界层可以减少阻力，从而提高燃油效率和改善性能。相反，如果边界层变得湍流化，它可能会增加阻力，负面影响飞机的性能。在土木工程领域，边界层概念也适用于分析建筑物和结构的风载荷。风在建筑物上流动形成的边界层影响着周围结构的压力分布。理解这一现象有助于工程师设计能够承受强风的建筑物，并防止结构失效。此外，边界层不仅限于空气和水；在其他上下文中也可以观察到，例如热交换器和化学反应器。在这些系统中，边界层影响热传递速率和反应速率，这对优化性能和效率至关重要。为了分析边界层，研究人员通常使用数学模型和模拟。这些工具帮助预测边界层在各种条件下的发展，为设计和优化提供了宝贵的见解。对边界层的研究促进了技术的进步，包括开发更光滑的表面和能够控制流体流动特性的专用涂层。总之，边界层是流体动力学中的一个基本概念，对各个领域有着深远的影响。理解这一概念对于提高车辆、结构和工业过程的效率和安全性至关重要。随着技术的进步，边界层的研究将继续发展，带来创新的解决方案和设计，提升众多应用中的性能。