newtonian fluid

简明释义

牛顿铃

英英释义

例句

1.Oil can be classified as a newtonian fluid 牛顿流体 if its viscosity does not change with the shear rate.

如果油的粘度不随剪切速率变化，它可以被归类为牛顿流体 newtonian fluid。

2.Water is a common example of a newtonian fluid 牛顿流体, where the viscosity remains constant regardless of the flow rate.

水是一个常见的牛顿流体 newtonian fluid，其粘度在流速变化时保持恒定。

3.When designing pipelines, understanding the properties of a newtonian fluid 牛顿流体 helps in predicting flow behavior.

在设计管道时，了解牛顿流体 newtonian fluid的性质有助于预测流动行为。

4.The concept of a newtonian fluid 牛顿流体 is crucial in fluid dynamics and helps in modeling various systems.

在流体动力学中，牛顿流体 newtonian fluid的概念至关重要，有助于对各种系统进行建模。

5.In engineering, many calculations assume that air behaves like a newtonian fluid 牛顿流体 for simplicity.

在工程中，许多计算假设空气像牛顿流体 newtonian fluid一样行为，以简化问题。

作文

In the realm of fluid mechanics, understanding the behavior of different types of fluids is crucial for various applications in engineering and science. One of the most fundamental categories of fluids is known as a newtonian fluid, which refers to fluids that exhibit a constant viscosity regardless of the shear rate applied to them. This characteristic means that when a newtonian fluid is subjected to stress, its flow behavior remains linear and predictable. Common examples of newtonian fluids include water, air, and many common oils. The concept of viscosity is essential in understanding newtonian fluids. Viscosity is a measure of a fluid's resistance to deformation or flow. In newtonian fluids, this resistance does not change with the rate at which the fluid is stirred or moved. This property makes newtonian fluids particularly important in various industrial applications where consistent flow behavior is necessary. For instance, in the food industry, sauces and dressings are often designed to behave as newtonian fluids so that they can be easily pumped, mixed, and packaged without unexpected changes in texture or consistency.On the other hand, non-newtonian fluids exhibit more complex behavior, where their viscosity can change depending on the shear rate. This includes fluids like ketchup, which becomes easier to pour when shaken or stirred. Understanding the differences between newtonian and non-newtonian fluids is vital for engineers and scientists who work on projects involving fluid dynamics.The study of newtonian fluids is grounded in Sir Isaac Newton's work in the 17th century, where he formulated the laws of motion and introduced the idea that the force acting on an object is equal to the mass of the object multiplied by its acceleration. This principle extends to the behavior of fluids, leading to the definition of newtonian fluids as those that follow a linear relationship between shear stress and shear rate. The mathematical representation of this relationship is described by Newton's law of viscosity, which states that shear stress is proportional to the shear rate, with viscosity as the constant of proportionality.In practical terms, the behavior of newtonian fluids can be modeled using simple equations, making it easier for engineers to design systems involving these fluids. For example, in pipeline transport, knowing that the fluid behaves in a newtonian manner allows for accurate calculations of flow rates and pressure drops, which are critical for ensuring efficient operation.Moreover, the simplicity of newtonian fluids extends to their use in simulations and computational fluid dynamics (CFD). When modeling fluid flow, engineers can rely on the predictable nature of newtonian fluids to create accurate simulations that guide design decisions and optimize processes.In conclusion, newtonian fluids play a vital role in both theoretical and practical aspects of fluid mechanics. Their predictable behavior under various conditions makes them a cornerstone of fluid dynamics, contributing to advancements in a wide range of industries. From manufacturing to environmental science, the understanding of newtonian fluids continues to be essential for innovation and efficiency in fluid-related applications.

在流体力学的领域中，理解不同类型流体的行为对于工程和科学的各种应用至关重要。其中最基本的流体类别之一被称为牛顿流体，指的是在施加剪切率时表现出恒定粘度的流体。这一特性意味着，当牛顿流体受到应力作用时，其流动行为保持线性和可预测。常见的牛顿流体包括水、空气和许多常见的油。粘度的概念在理解牛顿流体时至关重要。粘度是流体抵抗变形或流动的能力的量度。在牛顿流体中，这种抵抗不会随着流体搅拌或移动的速度而改变。这一特性使得牛顿流体在各种工业应用中尤为重要，其中一致的流动行为是必要的。例如，在食品工业中，酱汁和调料通常被设计为表现为牛顿流体，以便它们可以轻松地被泵送、混合和包装，而不会出现意想不到的质地或稠度变化。另一方面，非牛顿流体表现出更复杂的行为，其粘度可能会根据剪切率的变化而变化。这包括像番茄酱这样的流体，当被摇晃或搅拌时，它会变得更容易倒出。理解牛顿流体和非牛顿流体之间的差异对于从事流体动力学项目的工程师和科学家至关重要。对牛顿流体的研究源于17世纪艾萨克·牛顿爵士的工作，他制定了运动定律并引入了作用于物体的力等于物体的质量乘以其加速度的观点。这个原则扩展到流体的行为，导致了将牛顿流体定义为那些遵循剪切应力与剪切率之间线性关系的流体。该关系的数学表示由牛顿粘度定律描述，指出剪切应力与剪切率成正比，粘度是比例常数。在实际应用中，牛顿流体的行为可以通过简单的方程进行建模，使工程师能够设计涉及这些流体的系统。例如，在管道运输中，知道流体以牛顿流体的方式行为，使得流量和压力损失的准确计算成为可能，这对于确保高效运作至关重要。此外，牛顿流体的简单性还延伸到其在模拟和计算流体动力学（CFD）中的应用。当建模流体流动时，工程师可以依赖牛顿流体的可预测性质来创建准确的模拟，从而指导设计决策并优化流程。总之，牛顿流体在流体力学的理论和实践方面都扮演着重要角色。它们在各种条件下的可预测行为使其成为流体动力学的基石，为广泛行业的进步做出了贡献。从制造业到环境科学，对牛顿流体的理解仍然是流体相关应用中创新和效率的基础。