Froude number

简明释义

佛汝德数

英英释义

例句

1.The research focused on the relationship between the Froude number and wave generation in shallow water.

研究集中在Froude number与浅水区波浪生成之间的关系。

2.A low Froude number indicates that the flow is dominated by gravity, which is important for predicting sediment transport.

低Froude number表明流动受重力主导，这对于预测沉积物运输非常重要。

3.In ship design, maintaining an optimal Froude number helps in minimizing resistance and improving fuel efficiency.

在船舶设计中，保持最佳的Froude number有助于减少阻力并提高燃油效率。

4.During the model testing, the team ensured that the Froude number was consistent with full-scale conditions.

在模型测试期间，团队确保Froude number与全尺寸条件一致。

5.The engineer calculated the Froude number to determine the flow regime in the river, which is crucial for designing the dam.

工程师计算了Froude number以确定河流中的流动状态，这对于大坝的设计至关重要。

作文

The concept of the Froude number is essential in fluid mechanics and hydrodynamics, particularly when analyzing the behavior of water flow in various contexts. Named after the British engineer William Froude, the Froude number is a dimensionless quantity that compares inertial forces to gravitational forces. It is defined as the ratio of the flow velocity to the square root of the gravitational acceleration multiplied by a characteristic length, typically the depth of the fluid. This number plays a crucial role in determining the flow regime of a fluid, which can be classified as subcritical, critical, or supercritical based on its value.In practical applications, understanding the Froude number allows engineers and scientists to predict how fluids will behave under different conditions. For example, in the design of ships and marine vessels, the Froude number helps in assessing the speed and stability of the craft in water. A low Froude number indicates that the flow is subcritical, meaning that waves can travel upstream, while a high Froude number suggests supercritical flow, where waves cannot propagate against the flow direction. This distinction is vital for ensuring safe and efficient vessel operations.In civil engineering, the Froude number is also significant when designing hydraulic structures such as spillways, weirs, and channels. By analyzing the Froude number, engineers can predict the behavior of water flow over these structures, helping to prevent issues like erosion or flooding. For instance, if the Froude number indicates a transition from subcritical to supercritical flow, engineers must take measures to manage the energy and momentum of the flowing water to avoid potential damage.Moreover, the Froude number has applications beyond traditional engineering fields. In environmental studies, it aids in modeling sediment transport and river dynamics. Researchers use the Froude number to understand how different flow regimes affect the movement of sediments, which is critical for maintaining healthy ecosystems in rivers and streams. Additionally, the Froude number can be applied in the study of natural phenomena, such as tsunamis and floods, providing valuable insights into their behavior and impact.In summary, the Froude number is a fundamental concept in fluid dynamics that serves multiple purposes across various disciplines. Its ability to quantify the relationship between inertial and gravitational forces enables professionals to make informed decisions in engineering, environmental science, and beyond. Understanding the Froude number is crucial for anyone involved in the study or application of fluid mechanics, as it provides a framework for predicting flow behavior and ensuring the safety and efficiency of fluid-related systems.

在流体力学和水动力学中，Froude number（弗劳德数）的概念至关重要，尤其是在分析水流在各种情况下的行为时。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，它将惯性力与重力进行比较。它的定义是流速与重力加速度乘以特征长度（通常是流体深度）的平方根的比率。这个数值在确定流体的流动状态方面起着关键作用，可以根据其值将流动分为亚临界、临界或超临界。在实际应用中，理解Froude number使工程师和科学家能够预测流体在不同条件下的行为。例如，在船舶和海洋船只的设计中，Froude number 有助于评估船只在水中的速度和稳定性。低Froude number 表明流动是亚临界的，这意味着波浪可以向上游传播，而高Froude number 则表明超临界流动，其中波浪无法逆流而上。这一区别对确保船只操作的安全和效率至关重要。在土木工程中，Froude number 在设计水利结构（如溢洪道、堰和渠道）时也很重要。通过分析Froude number，工程师可以预测水流在这些结构上的行为，从而帮助防止侵蚀或洪水等问题。例如，如果Froude number 指示从亚临界流向超临界流的过渡，工程师必须采取措施来管理流动水的能量和动量，以避免潜在的损害。此外，Froude number 的应用超出了传统工程领域。在环境研究中，它有助于建模沉积物运输和河流动态。研究人员使用Froude number 来理解不同流动状态如何影响沉积物的运动，这对维持河流和溪流中的健康生态系统至关重要。此外，Froude number 还可以应用于自然现象的研究，如海啸和洪水，为其行为和影响提供有价值的见解。总之，Froude number 是流体动力学中的一个基本概念，在各个学科中发挥着多种作用。它能够量化惯性与重力之间的关系，使专业人员能够在工程、环境科学等领域做出明智的决策。理解Froude number 对于任何参与流体力学研究或应用的人来说都是至关重要的，因为它提供了一个预测流动行为和确保流体相关系统安全与效率的框架。