annulus wall boundary layer

简明释义

环壁附面层

英英释义

例句

1.The annulus wall boundary layer can lead to significant variations in temperature distribution across the annulus.

环形壁边界层可能导致环形区域内温度分布的显著变化。

2.The thickness of the annulus wall boundary layer plays a crucial role in heat transfer efficiency.

在热传导效率中，环形壁边界层的厚度起着至关重要的作用。

3.In our simulation, we observed the development of the annulus wall boundary layer as the flow rate increased.

在我们的模拟中，随着流速的增加，我们观察到了环形壁边界层的发展。

4.To optimize the design, engineers must consider the effects of the annulus wall boundary layer on pressure drop.

为了优化设计，工程师必须考虑环形壁边界层对压降的影响。

5.The thermal characteristics of the fluid are significantly affected by the annulus wall boundary layer.

流体的热特性受到环形壁边界层的显著影响。

作文

The study of fluid dynamics is a complex field that encompasses various phenomena, one of which is the behavior of fluids in confined geometries. A particularly interesting case is found in cylindrical systems, where the flow of fluid occurs between two concentric cylinders. In such configurations, the region adjacent to the walls of the cylinders is critical for understanding the overall behavior of the fluid. This region is known as the annulus wall boundary layer, which refers to the thin layer of fluid that is influenced by the friction and viscosity of the cylinder walls. Understanding the annulus wall boundary layer is essential for predicting how fluids will behave under different conditions, especially in engineering applications like heat exchangers, reactors, and pipelines.In many practical situations, the flow within the annular space can be laminar or turbulent, depending on the Reynolds number, which is a dimensionless quantity used to predict flow patterns in different fluid flow situations. The annulus wall boundary layer plays a significant role in determining the transition from laminar to turbulent flow. In laminar flow, the fluid moves in parallel layers with minimal mixing, while in turbulent flow, the fluid exhibits chaotic property changes and mixing. The thickness of the annulus wall boundary layer varies with the flow rate and the viscosity of the fluid, making it a significant factor in the design of systems involving annular flows.Moreover, the heat transfer characteristics are closely related to the annulus wall boundary layer. When a fluid flows through an annular channel, the temperature difference between the fluid and the walls affects the thermal boundary layer's development. The annulus wall boundary layer can significantly impact the efficiency of heat transfer processes, which is crucial in applications such as cooling systems and thermal insulation. Engineers must consider the properties of this boundary layer when designing systems to optimize performance and energy efficiency.Mathematical modeling of the annulus wall boundary layer involves solving the Navier-Stokes equations, which describe the motion of viscous fluid substances. These equations can become quite complex, especially in three-dimensional flows, necessitating the use of computational fluid dynamics (CFD) to simulate and analyze the behavior of the fluid within the annular space. By using CFD, engineers can visualize the flow patterns and identify areas where the annulus wall boundary layer may lead to inefficiencies or potential problems in system performance.In conclusion, the annulus wall boundary layer is a critical concept in fluid dynamics that significantly influences the behavior of fluids in annular spaces. Its impact on flow characteristics, heat transfer, and system performance cannot be overstated. As technology advances, the ability to accurately model and predict the behavior of the annulus wall boundary layer will continue to improve, leading to more efficient and effective engineering solutions across various industries.

流体动力学的研究是一个复杂的领域，涵盖了各种现象，其中一个有趣的案例是在封闭几何体中流体的行为。特别有趣的情况出现在圆柱形系统中，流体在两个同心圆柱之间流动。在这种配置中，靠近圆柱壁的区域对理解流体的整体行为至关重要。这个区域被称为环形壁边界层，指的是受圆柱壁的摩擦和粘度影响的薄流体层。理解环形壁边界层对于预测流体在不同条件下的行为至关重要，尤其是在热交换器、反应器和管道等工程应用中。在许多实际情况下，环形空间内的流动可以是层流或湍流，具体取决于雷诺数，这是一个无量纲量，用于预测不同流体流动情况中的流动模式。环形壁边界层在确定层流到湍流的过渡中起着重要作用。在层流中，流体以平行层的形式移动，混合最小，而在湍流中，流体表现出混乱的特性变化和混合。环形壁边界层的厚度随流速和流体的粘度而变化，使其成为涉及环形流动系统设计的重要因素。此外，热传递特性与环形壁边界层密切相关。当流体在环形通道中流动时，流体与壁之间的温差会影响热边界层的发展。环形壁边界层可以显著影响热传递过程的效率，这在冷却系统和热绝缘等应用中至关重要。工程师在设计系统时必须考虑这一边界层的特性，以优化性能和能源效率。对环形壁边界层的数学建模涉及求解描述粘性流体物质运动的纳维-斯托克斯方程。这些方程可能变得相当复杂，特别是在三维流动中，因此需要使用计算流体动力学（CFD）来模拟和分析环形空间内流体的行为。通过使用CFD，工程师可以可视化流动模式，并识别出环形壁边界层可能导致效率低下或系统性能潜在问题的区域。总之，环形壁边界层是流体动力学中的一个关键概念，显著影响环形空间内流体的行为。它对流动特性、热传递和系统性能的影响不容小觑。随着技术的进步，准确建模和预测环形壁边界层行为的能力将继续提高，从而在各个行业中推动更高效和有效的工程解决方案。