nonuniform flow

简明释义

不等速流

英英释义

例句

1.The study of nonuniform flow 非均匀流动 in rivers helps predict flood patterns more accurately.

对河流中非均匀流动 nonuniform flow 的研究有助于更准确地预测洪水模式。

2.Engineers must account for nonuniform flow 非均匀流动 when designing hydraulic systems to ensure efficiency.

工程师在设计液压系统时必须考虑非均匀流动 nonuniform flow 以确保效率。

3.Researchers are investigating the effects of nonuniform flow 非均匀流动 on sediment transport in coastal areas.

研究人员正在调查非均匀流动 nonuniform flow 对沿海地区沉积物运输的影响。

4.In civil engineering, understanding nonuniform flow 非均匀流动 is crucial for designing effective drainage systems.

在土木工程中，理解非均匀流动 nonuniform flow 对于设计有效的排水系统至关重要。

5.The phenomenon of nonuniform flow 非均匀流动 can lead to increased erosion in certain areas of a riverbank.

在河岸的某些区域，非均匀流动 nonuniform flow 现象可能导致侵蚀加剧。

作文

In the study of fluid dynamics, one of the critical concepts is that of nonuniform flow. This term refers to a flow pattern where the velocity of the fluid varies from one point to another within the flow field. Unlike uniform flow, where the fluid moves at a constant speed and direction, nonuniform flow presents a more complex scenario. Understanding this phenomenon is essential for engineers and scientists who work with fluids in various applications, such as aerodynamics, hydrodynamics, and even in biological systems.To illustrate the concept of nonuniform flow, consider a river flowing through a landscape. In some areas, the water may flow swiftly over smooth rocks, while in other sections, it may slow down significantly as it encounters obstacles like fallen trees or sandbanks. This variation in speed creates a nonuniform flow pattern, which can affect everything from sediment transport to the behavior of aquatic life.Moreover, nonuniform flow can also be observed in engineered systems. For example, in a pipe carrying water, if there are bends, valves, or changes in diameter, the flow will not remain uniform. The velocity may increase as the water flows through a narrower section of the pipe and decrease again when it enters a wider area. Such variations can lead to pressure losses and turbulence, which are crucial factors to consider in the design of piping systems.The implications of nonuniform flow extend beyond just engineering; they also play a significant role in environmental science. For instance, in assessing the impact of pollutants in a river, understanding how nonuniform flow affects the dispersion of contaminants is vital. If a pollutant is released into a section of the river with a high velocity, it may spread quickly downstream, affecting larger areas. Conversely, in slower-moving sections, the pollutant might accumulate, posing different risks to the ecosystem.Furthermore, nonuniform flow is not limited to natural systems. In industrial applications, such as chemical reactors or mixing tanks, achieving a uniform flow is often a challenge. Engineers must carefully design these systems to minimize nonuniform flow to ensure optimal mixing and reaction rates. Techniques such as using baffles or designing specific inlet configurations can help achieve a more uniform flow profile.In conclusion, the concept of nonuniform flow is fundamental in various fields, including engineering, environmental science, and biology. Recognizing the differences between uniform and nonuniform flow allows professionals to better predict and manage the behavior of fluids in both natural and engineered systems. As our understanding of fluid dynamics continues to evolve, so too will our ability to harness the complexities of nonuniform flow for innovative solutions to real-world problems.

在流体动力学的研究中，一个关键概念是非均匀流。这个术语指的是流场中流体的速度在不同点之间变化的流动模式。与流体以恒定速度和方向移动的均匀流不同，非均匀流呈现出更复杂的情况。理解这一现象对于从事流体工作（如气动学、水动力学，甚至生物系统）的工程师和科学家至关重要。为了说明非均匀流的概念，可以考虑一条流经景观的河流。在某些区域，水可能会在光滑的岩石上快速流动，而在其他部分，当它遇到倒下的树木或沙洲等障碍物时，流速可能会显著减慢。这种速度的变化形成了非均匀流模式，它可以影响从沉积物运输到水生生物行为的方方面面。此外，非均匀流也可以在工程系统中观察到。例如，在一根输送水的管道中，如果存在弯头、阀门或直径变化，流动就不会保持均匀。当水流过管道的狭窄部分时，速度可能会增加，然后在进入更宽的区域时再次减小。这种变化可能导致压力损失和湍流，这些都是设计管道系统时需要考虑的重要因素。非均匀流的影响不仅限于工程；它们在环境科学中也起着重要作用。例如，在评估污染物对河流的影响时，理解非均匀流如何影响污染物扩散至关重要。如果污染物释放到河流的高流速段，它可能会迅速向下游扩散，影响更大区域。相反，在流速较慢的区域，污染物可能会积聚，给生态系统带来不同的风险。此外，非均匀流并不限于自然系统。在工业应用中，例如化学反应器或混合罐，达到均匀流动通常是一个挑战。工程师必须仔细设计这些系统，以最小化非均匀流，以确保最佳混合和反应速率。使用挡板或设计特定的入口配置等技术可以帮助实现更均匀的流动轮廓。总之，非均匀流的概念在工程、环境科学和生物学等多个领域都是基础。认识到均匀流和非均匀流之间的差异使专业人士能够更好地预测和管理自然和工程系统中流体的行为。随着我们对流体动力学的理解不断发展，我们将能够利用非均匀流的复杂性，为现实世界的问题提供创新的解决方案。