law of dynamic similitude

简明释义

动力相似定律

英英释义

例句

1.Architects use the law of dynamic similitude 动态相似律 to ensure that their models accurately represent the behavior of structures under stress.

建筑师利用动态相似律 动态相似律确保他们的模型准确地代表结构在压力下的行为。

2.When simulating ocean waves in a lab, researchers apply the law of dynamic similitude 动态相似律 to replicate real-life conditions.

在实验室模拟海洋波浪时，研究人员应用动态相似律 动态相似律以复制现实条件。

3.The law of dynamic similitude 动态相似律 is crucial when designing wind tunnel experiments for aircraft testing.

在设计飞机测试的风洞实验时，动态相似律 动态相似律至关重要。

4.The law of dynamic similitude 动态相似律 helps in predicting the performance of vehicles by using scaled models during crash tests.

在碰撞测试中，动态相似律 动态相似律有助于通过使用缩小模型来预测车辆的性能。

5.In fluid dynamics, engineers often rely on the law of dynamic similitude 动态相似律 to scale model tests to real-world applications.

在流体动力学中，工程师常常依赖于动态相似律 动态相似律将模型测试缩放到实际应用。

作文

The concept of the law of dynamic similitude is fundamental in the fields of engineering and physics, particularly when it comes to modeling and simulating physical systems. This principle states that two systems can be considered dynamically similar if their behavior can be predicted by comparing their respective forces, dimensions, and other relevant parameters. By understanding this law, engineers can create scaled models of structures, vehicles, and even entire systems to test their performance under various conditions without the need for full-scale prototypes.For instance, when designing a new aircraft, engineers often build smaller models to test in wind tunnels. The law of dynamic similitude allows them to ensure that the airflow and forces acting on the model will be representative of those acting on the actual aircraft. This is achieved by maintaining a consistent ratio of forces, such as lift, drag, and thrust, between the model and the full-scale version. By adhering to this law, engineers can make accurate predictions about how the larger aircraft will perform, significantly reducing the time and cost associated with development.Moreover, the law of dynamic similitude is not limited to aerodynamics. It applies to various fields including hydrodynamics, where engineers might study the behavior of ships or submarines in water. In this case, they would create scale models that mimic the fluid dynamics of the full-sized vessels. The key is to replicate the critical dimensionless numbers, such as Reynolds number and Froude number, which govern the flow characteristics of the fluid around the object.In addition to its practical applications, the law of dynamic similitude also serves as a crucial educational tool. Students in engineering and physics programs learn about this law to understand the relationships between different physical quantities and how they influence system behavior. By grasping these concepts early in their education, future engineers are better equipped to tackle real-world challenges.However, it is important to note that while the law of dynamic similitude provides a powerful framework for modeling, it does have its limitations. Certain phenomena may not scale linearly, and factors such as turbulence, material properties, and boundary conditions can introduce complexities that are difficult to replicate in models. Therefore, while dynamic similitude is a valuable principle, engineers must also rely on empirical data and advanced computational methods to supplement their findings.In conclusion, the law of dynamic similitude is a vital concept that underpins much of modern engineering and scientific research. Its ability to facilitate accurate modeling and simulation has transformed how we approach the design and testing of complex systems. As technology continues to advance, the importance of this law will only grow, highlighting the need for engineers and scientists to master its principles to innovate and solve the challenges of tomorrow.

“动态相似法则”这一概念在工程和物理学领域中是基础性的，尤其是在建模和模拟物理系统时。该原则指出，如果两个系统的行为可以通过比较它们各自的力、尺寸和其他相关参数来预测，那么它们可以被认为是动态相似的。通过理解这一法则，工程师可以创建结构、车辆甚至整个系统的缩放模型，以在各种条件下测试其性能，而无需全尺寸原型。例如，在设计新型飞机时，工程师通常会构建较小的模型以在风洞中进行测试。“动态相似法则”使他们能够确保作用于模型的气流和力将代表作用于实际飞机的情况。这是通过保持模型与全尺寸版本之间力的比例一致来实现的，例如升力、阻力和推力。遵循这一法则，工程师可以准确预测较大飞机的性能，从而显著减少开发所需的时间和成本。此外，“动态相似法则”并不限于空气动力学。它适用于各种领域，包括水动力学，工程师可能会研究船舶或潜艇在水中的行为。在这种情况下，他们会创建缩放模型，以模拟全尺寸船只的流体动力学。关键是复制决定流动特征的无量纲数，例如雷诺数和弗劳德数。除了实际应用外，“动态相似法则”还作为重要的教育工具。工程和物理专业的学生学习这一法则，以理解不同物理量之间的关系及其如何影响系统行为。通过在教育早期掌握这些概念，未来的工程师能够更好地应对现实世界的挑战。然而，需要注意的是，尽管“动态相似法则”提供了一个强大的建模框架，但它也有其局限性。某些现象可能不会线性缩放，湍流、材料特性和边界条件等因素可能引入难以在模型中复制的复杂性。因此，虽然动态相似性是一个有价值的原则，但工程师还必须依赖经验数据和先进的计算方法来补充他们的发现。总之，“动态相似法则”是现代工程和科学研究的一个重要概念。它促进准确建模和模拟的能力改变了我们设计和测试复杂系统的方法。随着技术的不断进步，这一法则的重要性只会增加，强调了工程师和科学家掌握其原则以创新和解决未来挑战的必要性。