Froude number

简明释义

傅氏数

英英释义

例句

1.A low Froude number 弗劳德数 indicates that the flow is dominated by viscous forces rather than inertial forces.

低Froude number 弗劳德数表明流动主要受粘性力的支配，而不是惯性力。

2.Hydraulic engineers often refer to the Froude number 弗劳德数 when designing spillways for dams.

水利工程师在设计大坝溢洪道时，常常参考Froude number 弗劳德数。

3.When analyzing wave patterns, the Froude number 弗劳德数 helps to understand the relationship between the wave speed and the flow speed.

在分析波浪模式时，Froude number 弗劳德数有助于理解波速与流速之间的关系。

4.In ship design, engineers often use the Froude number 弗劳德数 to predict the resistance experienced by the hull.

在船舶设计中，工程师通常使用Froude number 弗劳德数来预测船体所遇到的阻力。

5.The calculation of the Froude number 弗劳德数 is essential in determining the flow regime of a river.

计算Froude number 弗劳德数对于确定河流的流动状态至关重要。

作文

The concept of the Froude number is pivotal in fluid mechanics, especially when analyzing the behavior of fluids in motion. Named after the British engineer William Froude, the Froude number is a dimensionless parameter that compares inertial forces to gravitational forces. It is defined as the ratio of the velocity of a fluid flow to the square root of the product of gravitational acceleration and a characteristic length. This number plays a crucial role in understanding various phenomena in hydraulics, ship design, and even in the study of natural water bodies.In practical applications, the Froude number helps engineers and scientists predict how different fluids will behave under various conditions. For instance, in naval architecture, the Froude number is used to determine the resistance of ships moving through water. A high Froude number indicates that inertial forces dominate, which can lead to wave-making resistance, while a low Froude number suggests that gravitational forces are more significant, often resulting in smoother flows. This understanding is essential for optimizing vessel designs to enhance performance and fuel efficiency.Moreover, the Froude number is also relevant in open channel flow, where it assists in classifying the flow regime. Flows can be categorized as subcritical, critical, or supercritical based on their Froude number. Subcritical flows, characterized by a Froude number less than one, are tranquil, allowing waves to travel upstream. In contrast, supercritical flows, with a Froude number greater than one, are rapid and turbulent, where waves cannot propagate upstream. This classification is vital for designing hydraulic structures such as weirs and spillways, ensuring they can handle varying flow conditions effectively.In addition to engineering applications, the Froude number has implications in environmental science. For example, in river systems, understanding the Froude number can help predict sediment transport and erosion patterns. When the flow is supercritical, sediments may be suspended and transported downstream more efficiently, impacting the ecological balance of aquatic habitats.To sum up, the Froude number is an essential tool in both theoretical and applied fluid dynamics. Its ability to bridge the gap between inertial and gravitational forces allows for deeper insights into fluid behavior across various fields. Whether in designing efficient vessels, managing water resources, or studying environmental impacts, the Froude number serves as a fundamental parameter that enhances our understanding of fluid mechanics. As technology advances and new challenges arise, the relevance of the Froude number will undoubtedly continue to grow, making it a key concept for future innovations in fluid dynamics and related disciplines.

Froude数的概念在流体力学中至关重要，特别是在分析流动中的流体行为时。Froude数以英国工程师威廉·弗劳德的名字命名，是一个无量纲参数，用于比较惯性力与重力之间的关系。它被定义为流体流动速度与重力加速度和特征长度乘积平方根的比率。这个数字在理解水力学、船舶设计甚至自然水体研究中的各种现象方面起着关键作用。在实际应用中，Froude数帮助工程师和科学家预测不同流体在各种条件下的行为。例如，在海军建筑中，Froude数用于确定船只在水中移动时的阻力。高Froude数表明惯性力占主导地位，这可能导致波浪阻力，而低Froude数则表明重力力更为显著，通常会导致流动更加平稳。这种理解对于优化船舶设计以提高性能和燃油效率至关重要。此外，Froude数在开放渠道流动中也很相关，它有助于对流动状态进行分类。根据Froude数，流动可以分为亚临界、临界或超临界流。亚临界流的特征是Froude数小于1，流动平静，允许波浪向上游传播。相反，超临界流的Froude数大于1，流动迅速而湍急，波浪无法向上游传播。这种分类对于设计水利结构（如溢洪道和溢流道）至关重要，确保它们能够有效处理不同的流动条件。除了工程应用外，Froude数在环境科学中也有影响。例如，在河流系统中，理解Froude数可以帮助预测沉积物运输和侵蚀模式。当流动为超临界时，沉积物可能被悬浮并更有效地向下游运输，从而影响水生栖息地的生态平衡。总之，Froude数是理论和应用流体动力学中的一个基本工具。它能够桥接惯性力和重力之间的差距，使我们能够更深入地了解各个领域的流体行为。无论是在设计高效的船只、管理水资源还是研究环境影响，Froude数都作为一个基本参数，增强了我们对流体力学的理解。随着技术的进步和新挑战的出现，Froude数的重要性无疑将继续增长，使其成为流体动力学及相关学科未来创新的关键概念。