boundary layer

简明释义

边界层

英英释义

例句

1.To reduce turbulence, engineers often design features that control the boundary layer (边界层) around structures.

为了减少湍流，工程师通常设计控制结构周围边界层 (边界层) 的特征。

2.Engineers must consider the boundary layer (边界层) when designing aircraft wings for optimal performance.

工程师在设计飞机机翼以获得最佳性能时，必须考虑到边界层 (边界层)。

3.The boundary layer (边界层) affects the drag force experienced by an object moving through a fluid.

对于在流体中移动的物体来说，边界层 (边界层) 会影响所经历的阻力。

4.The thickness of the boundary layer (边界层) can vary depending on the speed of the fluid and the surface roughness.

根据流体的速度和表面粗糙度，边界层 (边界层) 的厚度可以有所不同。

5.In fluid dynamics, the concept of a boundary layer (边界层) describes the layer of fluid in the immediate vicinity of a bounding surface.

在流体动力学中，边界层 (边界层) 的概念描述了靠近边界表面的流体层。

作文

The concept of the boundary layer is fundamental in fluid dynamics and environmental science. It refers to the thin region near a boundary, such as a surface or interface, where the effects of viscosity are significant. In simpler terms, the boundary layer is the area where the fluid's velocity changes from zero at the surface (due to the no-slip condition) to the free stream velocity away from the surface. This phenomenon is crucial in understanding how fluids behave when they come into contact with solid surfaces.In many engineering applications, the boundary layer plays a pivotal role in determining the drag force acting on objects moving through a fluid. For example, in the design of aircraft, engineers must carefully consider the boundary layer characteristics to optimize lift and minimize drag. A well-managed boundary layer can enhance the performance of an aircraft by reducing turbulence and improving fuel efficiency.Similarly, in civil engineering, the boundary layer affects the behavior of wind around buildings and structures. Understanding how the boundary layer interacts with these surfaces helps architects and engineers create safer and more efficient designs. For instance, tall buildings in urban areas must account for the boundary layer effects to mitigate wind loads and ensure structural integrity.Moreover, the boundary layer is not limited to air and solid surfaces; it also exists in water bodies. In aquatic environments, the boundary layer influences the exchange of gases, nutrients, and heat between the water and the surrounding atmosphere. This interaction is vital for maintaining healthy ecosystems, as it affects the distribution of oxygen and other essential elements in the water.The study of the boundary layer has led to significant advancements in technology and science. For example, researchers have developed models to predict the behavior of the boundary layer under various conditions, which has implications for weather forecasting and climate modeling. Understanding how pollutants disperse in the boundary layer can help in developing strategies to improve air quality and protect public health.In conclusion, the boundary layer is a critical aspect of fluid dynamics that impacts various fields, including engineering, environmental science, and meteorology. By studying the boundary layer, we gain insights into the complex interactions between fluids and surfaces, leading to innovations that enhance our understanding of the natural world and improve our technological capabilities. As we continue to explore this fascinating area of study, the importance of the boundary layer will undoubtedly remain a key focus for researchers and practitioners alike.

边界层的概念在流体动力学和环境科学中是基础性的。它指的是靠近边界（如表面或界面）的薄区域，在该区域内，粘性效应显著。简单来说，边界层是流体速度从表面处的零（由于无滑移条件）变化到远离表面的自由流速的区域。这一现象对于理解流体在与固体表面接触时的行为至关重要。在许多工程应用中，边界层在确定物体在流体中移动时所受的阻力方面发挥着关键作用。例如，在飞机设计中，工程师必须仔细考虑边界层特性，以优化升力并最小化阻力。一个良好管理的边界层可以通过减少湍流和提高燃油效率来增强飞机的性能。同样，在土木工程中，边界层影响风在建筑物和结构周围的行为。理解边界层如何与这些表面相互作用有助于建筑师和工程师创造更安全、更高效的设计。例如，城市地区的高层建筑必须考虑边界层效应，以减轻风载荷并确保结构完整性。此外，边界层不仅限于空气和固体表面；它在水体中也存在。在水生环境中，边界层影响气体、营养物质和热量在水与周围大气之间的交换。这种相互作用对于维持健康生态系统至关重要，因为它影响氧气和其他必需元素在水中的分布。对边界层的研究已经带来了技术和科学的重大进展。例如，研究人员开发了模型来预测在各种条件下边界层的行为，这对天气预报和气候建模具有重要意义。理解污染物在边界层中的扩散如何，可以帮助制定改善空气质量和保护公共健康的策略。总之，边界层是流体动力学的一个关键方面，影响着包括工程、环境科学和气象学在内的多个领域。通过研究边界层，我们获得了关于流体与表面之间复杂相互作用的深入见解，从而推动了我们对自然世界的理解和技术能力的提升。随着我们继续探索这一迷人的研究领域，边界层的重要性无疑将继续成为研究人员和从业者的重点关注。