turbulent flow

简明释义

湍流紊流

英英释义

例句

1.The scientist studied the turbulent flow of air around the aircraft wings.

科学家研究了飞机机翼周围的湍流。

2.The river experienced turbulent flow after the heavy rains, making it dangerous for kayaking.

在大雨之后，河流经历了湍流，这使得皮划艇变得危险。

3.The turbulent flow in the ocean can significantly impact marine navigation.

海洋中的湍流会对海洋导航产生重大影响。

4.In fluid dynamics, turbulent flow is characterized by chaotic changes in pressure and flow velocity.

在流体动力学中，湍流的特点是压力和流速的混乱变化。

5.Engineers must account for turbulent flow in their designs to ensure structural integrity.

工程师必须在设计中考虑湍流以确保结构的完整性。

作文

In the study of fluid dynamics, one of the most fascinating phenomena is turbulent flow. This term refers to a type of fluid motion characterized by chaotic changes in pressure and flow velocity. Unlike laminar flow, where fluid particles move in parallel layers, turbulent flow involves irregular fluctuations and swirls that can lead to a complex and unpredictable pattern. Understanding turbulent flow is crucial for various applications in engineering and natural sciences, as it plays a significant role in processes ranging from weather patterns to the design of aircraft wings.To grasp the concept of turbulent flow, it is essential to consider its characteristics. One of the defining features is the presence of eddies or vortices, which are small whirlpool-like structures that form within the fluid. These eddies can vary in size and intensity, contributing to the overall chaotic nature of turbulent flow. The transition from laminar to turbulent flow often occurs at a certain critical velocity, known as the Reynolds number. When the flow rate exceeds this threshold, the smooth and orderly movement of the fluid breaks down into turbulence.The implications of turbulent flow are vast and varied. In the field of aerodynamics, for instance, understanding how air behaves around an aircraft is essential for optimizing performance and safety. The turbulent flow around the wings can influence lift and drag, affecting fuel efficiency and flight stability. Engineers must account for these factors when designing aircraft to ensure they can withstand the forces generated by turbulent flow during flight.Moreover, turbulent flow is also significant in environmental science. Rivers and streams exhibit turbulent flow as they navigate through landscapes, impacting sediment transport and ecosystem dynamics. The mixing of nutrients and oxygen in water bodies often relies on the turbulence created by turbulent flow, which is vital for maintaining healthy aquatic ecosystems. Understanding these processes helps scientists develop strategies for preserving water quality and managing natural resources effectively.In industrial applications, turbulent flow is harnessed in various processes such as mixing, chemical reactions, and heat transfer. For example, in chemical reactors, turbulent flow can enhance the interaction between reactants, leading to more efficient production rates. Similarly, in heat exchangers, turbulent flow improves heat transfer efficiency, making systems more effective and energy-efficient.Despite its many advantages, turbulent flow can also pose challenges. For instance, in pipelines, turbulent flow can lead to increased friction and energy loss, requiring more powerful pumps and higher operational costs. Engineers and scientists continuously seek to optimize systems to minimize the adverse effects of turbulent flow while maximizing its benefits.In conclusion, turbulent flow is a complex yet essential aspect of fluid dynamics that influences numerous fields, from aviation to environmental science and industrial processes. Its chaotic nature presents both opportunities and challenges, making it a subject of ongoing research and innovation. By deepening our understanding of turbulent flow, we can better harness its potential and mitigate its drawbacks, paving the way for advancements in technology and sustainability.

在流体动力学的研究中，最迷人的现象之一是湍流。这个术语指的是一种流体运动类型，其特征是压力和流速的混乱变化。与层流不同，层流中流体颗粒平行移动，湍流涉及不规则波动和涡旋，可能导致复杂且不可预测的模式。理解湍流对于工程和自然科学中的各种应用至关重要，因为它在从天气模式到飞机机翼设计的过程中发挥着重要作用。要掌握湍流的概念，必须考虑其特征。其中一个定义特征是涡旋或漩涡的存在，这些是形成于流体内的小型漩涡状结构。这些涡旋的大小和强度各异，增加了湍流的整体混沌性质。从层流到湍流的过渡通常发生在某个临界速度，即雷诺数。当流速超过该阈值时，流体的平滑有序运动会崩溃为湍流。湍流的影响广泛而多样。例如，在空气动力学领域，理解空气在飞机周围的行为对于优化性能和安全至关重要。机翼周围的湍流会影响升力和阻力，从而影响燃油效率和飞行稳定性。工程师在设计飞机时必须考虑这些因素，以确保它们能够承受湍流在飞行过程中产生的力量。此外，湍流在环境科学中也具有重要意义。河流和溪流在穿越景观时表现出湍流，影响沉积物运输和生态系统动态。水体中营养物质和氧气的混合往往依赖于湍流所产生的湍流，这对维持健康的水生生态系统至关重要。理解这些过程有助于科学家制定保护水质和有效管理自然资源的策略。在工业应用中，湍流在混合、化学反应和热传递等各种过程中被利用。例如，在化学反应器中，湍流可以增强反应物之间的相互作用，从而提高生产率。同样，在热交换器中，湍流提高了热传递效率，使系统更有效、更节能。尽管有许多优点，湍流也可能带来挑战。例如，在管道中，湍流可能导致摩擦和能量损失增加，需要更强大的泵和更高的运营成本。工程师和科学家不断寻求优化系统，以尽量减少湍流的不利影响，同时最大限度地发挥其优势。总之，湍流是流体动力学的一个复杂但重要的方面，影响着航空、环境科学和工业过程等众多领域。其混沌特性既带来了机遇，也带来了挑战，使其成为持续研究和创新的主题。通过加深对湍流的理解，我们可以更好地利用其潜力并减轻其缺点，为技术和可持续发展的进步铺平道路。