Froude number

简明释义

佛鲁特数

英英释义

例句

1.A high Froude number 弗劳德数 indicates that inertial forces are dominant over gravitational forces in fluid flow.

高Froude number 弗劳德数 表明在流体流动中惯性力主导于重力。

2.In hydraulic modeling, the Froude number 弗劳德数 is crucial for simulating flow conditions accurately.

在水力模型中，Froude number 弗劳德数 对于准确模拟流动条件至关重要。

3.The design of the ship's hull was based on the calculated Froude number 弗劳德数 to ensure optimal performance in water.

船体的设计是基于计算得出的Froude number 弗劳德数，以确保在水中获得最佳性能。

4.Engineers often use the Froude number 弗劳德数 to predict wave patterns around structures in rivers.

工程师通常使用Froude number 弗劳德数 来预测河流中结构周围的波浪模式。

5.During the experiment, we measured the Froude number 弗劳德数 to assess the flow regime of the water channel.

在实验过程中，我们测量了Froude number 弗劳德数 以评估水道的流动状态。

作文

The concept of the Froude number is fundamental in fluid mechanics and plays a crucial role in understanding the behavior of fluids in motion. Named after the British engineer William Froude, the Froude number is a dimensionless quantity that compares the inertial forces to gravitational forces acting on a fluid. It is defined as the ratio of the velocity of the fluid to the square root of the product of the acceleration due to gravity and a characteristic length. Mathematically, it can be expressed as: Froude number = v / √(gL), where v is the fluid velocity, g is the acceleration due to gravity, and L is the characteristic length. Understanding the Froude number is essential for various applications, particularly in naval architecture and civil engineering. For instance, when designing ships and boats, engineers must ensure that the vessel operates efficiently at different speeds. The Froude number helps predict the flow patterns around the hull of a ship, aiding in the design process to minimize drag and optimize stability. A low Froude number indicates that gravitational forces dominate, which is typical for slow-moving flows, while a high Froude number suggests that inertial forces are more significant, often seen in fast-flowing rivers or waves. Moreover, the Froude number is also used in the study of open channel flows. In these scenarios, it helps determine whether the flow is subcritical or supercritical. Subcritical flow occurs when the Froude number is less than one, indicating that gravitational forces are strong enough to control the flow, allowing for smooth, tranquil conditions. Conversely, supercritical flow occurs when the Froude number exceeds one, leading to turbulent and chaotic conditions. This distinction is vital for engineers and hydrologists when designing channels, spillways, and other hydraulic structures. In addition to its practical applications, the Froude number also provides insight into the fundamental principles of fluid dynamics. It highlights the balance between different forces acting on a fluid and serves as a key parameter in modeling fluid behavior. By analyzing the Froude number, researchers can better understand phenomena such as wave propagation, sediment transport, and even the formation of hydraulic jumps. These insights are crucial for predicting how fluids will behave in natural and engineered systems. In conclusion, the Froude number is an indispensable tool in fluid mechanics, bridging theoretical concepts with practical applications. Its ability to characterize fluid flow regimes makes it essential for engineers, scientists, and researchers working in various fields. By mastering the Froude number, one gains a deeper understanding of the complex interactions between forces in fluid systems, ultimately leading to more effective designs and solutions in engineering and environmental management.

在流体力学中，Froude number（弗劳德数）的概念是基础性的，且在理解流体运动行为方面发挥着至关重要的作用。该术语以英国工程师威廉·弗劳德的名字命名，Froude number 是一个无量纲量，用于比较作用于流体的惯性力与重力。它被定义为流体速度与重力加速度和特征长度乘积的平方根的比率。在数学上，可以表示为：Froude number = v / √(gL)，其中 v 是流体速度，g 是重力加速度，L 是特征长度。理解 Froude number 对于各种应用至关重要，尤其是在船舶设计和土木工程中。例如，在设计船只和船只时，工程师必须确保船只在不同速度下高效运行。Froude number 有助于预测船体周围的流动模式，从而在设计过程中减少阻力并优化稳定性。低 Froude number 表明重力作用占主导地位，通常适用于缓慢流动的流体，而高 Froude number 则表明惯性力更为显著，常见于快速流动的河流或波浪中。此外，Froude number 还用于研究明渠流动。在这些情况下，它有助于确定流动是亚临界流还是超临界流。当 Froude number 小于一时，流动为亚临界流，表明重力作用足以控制流动，允许平稳、宁静的条件。相反，当 Froude number 超过一时，流动为超临界流，导致湍急和混乱的条件。这一区别对于设计渠道、溢洪道和其他水利结构的工程师和水文学家至关重要。除了实际应用外，Froude number 还提供了对流体动力学基本原理的深入理解。它突出了作用于流体的不同力之间的平衡，并作为建模流体行为的关键参数。通过分析 Froude number，研究人员可以更好地理解波传播、沉积物运输，甚至水跃的形成等现象。这些见解对于预测流体在自然和工程系统中的行为至关重要。总之，Froude number 是流体力学中不可或缺的工具，将理论概念与实际应用结合起来。它表征流体流动状态的能力使其成为工程师、科学家和研究人员在各个领域的重要工具。通过掌握 Froude number，人们可以更深入地理解流体系统中力的复杂相互作用，从而在工程和环境管理中实现更有效的设计和解决方案。