laminar flow

简明释义

层流

英英释义

例句

1.The engineer explained that laminar flow 层流 is crucial for minimizing drag in aircraft design.

工程师解释说，层流 laminar flow 对于减少飞机设计中的阻力至关重要。

2.When blood flows through the arteries at a steady rate, it exhibits laminar flow 层流, which is essential for proper circulation.

当血液以稳定的速度流经动脉时，它表现出层流 laminar flow，这对于正常循环是必不可少的。

3.In a well-designed aerodynamics lab, we can observe laminar flow 层流 over the model wings.

在一个设计良好的空气动力学实验室中，我们可以观察到模型机翼上的层流 laminar flow。

4.The scientist measured the velocity profile of the fluid to confirm the presence of laminar flow 层流 in the pipe.

科学家测量了流体的速度分布，以确认管道中存在层流 laminar flow。

5.In HVAC systems, maintaining laminar flow 层流 helps improve air quality and comfort.

在暖通空调系统中，保持层流 laminar flow 有助于改善空气质量和舒适度。

作文

Understanding the concept of laminar flow is essential in various fields such as fluid dynamics, engineering, and even medicine. Laminar flow refers to a type of fluid motion where the fluid moves in smooth, parallel layers with minimal disruption between them. This phenomenon occurs at low velocities and is characterized by a streamlined flow pattern. In contrast to turbulent flow, where the fluid undergoes chaotic changes in pressure and velocity, laminar flow maintains a consistent velocity across its layers, making it predictable and easier to analyze.One of the key characteristics of laminar flow is that it occurs when the Reynolds number is below a critical value, typically around 2000 for most fluids. The Reynolds number is a dimensionless quantity that helps predict flow patterns in different fluid flow situations. When the flow is laminar, the viscous forces are dominant over inertial forces, allowing the fluid to glide smoothly without mixing with adjacent layers.In practical applications, laminar flow is crucial in various industries. For instance, in aerospace engineering, the design of aircraft wings takes into consideration laminar flow to reduce drag and improve fuel efficiency. By maintaining laminar flow over the wing surfaces, engineers can achieve better aerodynamic performance, which is vital for the overall efficiency of an aircraft.Similarly, in the medical field, laminar flow is employed in clean rooms and operating theaters to maintain sterile environments. The use of specialized ventilation systems ensures that air flows in a laminar manner, minimizing the risk of contamination from airborne particles. This is particularly important during surgical procedures where maintaining a sterile environment is critical to patient safety.Furthermore, understanding laminar flow can also benefit environmental science. For example, predicting how pollutants disperse in water bodies requires knowledge of fluid dynamics, including laminar flow. When pollutants enter a river or lake, their behavior can be influenced by whether the flow is laminar or turbulent. In a laminar flow situation, pollutants may spread uniformly, while in turbulent conditions, they may disperse erratically, affecting the ecosystem differently.In conclusion, laminar flow plays a significant role in various scientific and engineering disciplines. Its predictable nature allows for better designs and safer environments, highlighting the importance of mastering this concept. As we continue to explore and innovate in these fields, the principles of laminar flow will undoubtedly remain a fundamental aspect of our understanding of fluid dynamics and its applications in real-world scenarios.

理解层流的概念在流体动力学、工程甚至医学等多个领域都是至关重要的。层流指的是一种流体运动类型，其中流体以平滑、平行的层流动，层与层之间的干扰极小。这种现象发生在低速条件下，其特征是流动模式呈现流线型。与涡流相对，后者中的流体经历压力和速度的混乱变化，层流保持各层之间的一致速度，使其可预测且易于分析。层流的一个关键特征是当雷诺数低于临界值时，通常对于大多数流体而言，该值约为2000。雷诺数是一个无量纲量，有助于预测不同流体流动情形中的流动模式。当流动为层流时，粘性力主导于惯性力，使流体能够平滑滑行而不与相邻层混合。在实际应用中，层流在多个行业中至关重要。例如，在航空航天工程中，飞机机翼的设计考虑到了层流以减少阻力并提高燃油效率。通过保持机翼表面的层流，工程师可以实现更好的空气动力学性能，这对飞机的整体效率至关重要。同样，在医学领域，层流被用于洁净室和手术室，以维持无菌环境。使用专门的通风系统确保空气以层流方式流动，从而最小化空气传播颗粒的污染风险。这在外科手术过程中尤为重要，因为保持无菌环境对患者安全至关重要。此外，理解层流也能使环境科学受益。例如，预测污染物在水体中的扩散需要流体动力学的知识，包括层流。当污染物进入河流或湖泊时，它们的行为可能会受到层流或涡流的影响。在层流情况下，污染物可能均匀扩散，而在涡流条件下，它们可能会不规则扩散，从而对生态系统产生不同的影响。总之，层流在多个科学和工程学科中发挥着重要作用。其可预测的特性使得更好的设计和更安全的环境成为可能，突显了掌握这一概念的重要性。随着我们继续在这些领域探索和创新，层流的原理无疑将继续成为我们理解流体动力学及其在现实世界应用中的基本方面。