skin friction coefficient

简明释义

表面摩擦系数

英英释义

例句

1.The engineer calculated the skin friction coefficient 表面摩擦系数 to determine the drag force on the aircraft wings.

工程师计算了skin friction coefficient 表面摩擦系数以确定飞机机翼上的阻力。

2.A high skin friction coefficient 表面摩擦系数 can lead to increased fuel consumption in vehicles.

高的skin friction coefficient 表面摩擦系数可能导致车辆燃油消耗增加。

3.Researchers are studying the effect of surface roughness on the skin friction coefficient 表面摩擦系数 in pipeline systems.

研究人员正在研究管道系统中表面粗糙度对skin friction coefficient 表面摩擦系数的影响。

4.In fluid dynamics, a lower skin friction coefficient 表面摩擦系数 indicates smoother flow over a surface.

在流体动力学中，较低的skin friction coefficient 表面摩擦系数表示流体在表面上流动更为平滑。

5.The skin friction coefficient 表面摩擦系数 is crucial for predicting the performance of marine vessels.

对于预测海洋船舶的性能，skin friction coefficient 表面摩擦系数至关重要。

作文

The study of fluid dynamics is a fascinating field that encompasses various phenomena, including the behavior of fluids in motion and their interaction with solid surfaces. One crucial aspect of this study is the concept of the skin friction coefficient, which plays a significant role in determining the resistance experienced by an object moving through a fluid. The skin friction coefficient (表面摩擦系数) quantifies the frictional forces acting on the surface of a body due to the viscosity of the fluid. Understanding this coefficient is essential for engineers and scientists who design vehicles, aircraft, and other structures that interact with fluids.In practical applications, the skin friction coefficient can significantly influence the efficiency of transportation systems. For instance, in the aerospace industry, reducing drag is a primary goal. The skin friction coefficient directly affects the total drag force acting on an aircraft. A lower coefficient indicates smoother airflow over the surface, resulting in less resistance and improved fuel efficiency. Engineers often conduct wind tunnel tests to measure the skin friction coefficient for different surface materials and shapes, allowing them to optimize designs for better performance.Moreover, the skin friction coefficient is not a constant value; it varies with the flow conditions, such as speed and turbulence. For example, at lower velocities, the flow is typically laminar, leading to a lower skin friction coefficient. Conversely, as the velocity increases, the flow becomes turbulent, and the coefficient rises due to increased chaotic motion within the fluid. This variation highlights the importance of understanding the operating conditions of a system when evaluating the skin friction coefficient.In addition to its application in aerodynamics, the skin friction coefficient is also relevant in marine engineering. Ships and submarines experience resistance as they move through water, and the skin friction coefficient contributes to this resistance. Engineers strive to design hulls that minimize this coefficient, thereby enhancing the vessel's speed and fuel efficiency. Materials with lower roughness can lead to a reduced skin friction coefficient, making them ideal for marine applications.Furthermore, the skin friction coefficient is essential in civil engineering, particularly in the design of pipelines and channels. When fluids flow through these systems, the friction between the fluid and the walls affects the overall flow rate and pressure drop. By calculating the skin friction coefficient, engineers can predict how much energy will be required to pump fluids through pipelines, ensuring that systems are designed efficiently and economically.In summary, the skin friction coefficient (表面摩擦系数) is a vital parameter in fluid dynamics that influences the performance of various engineering systems. Its significance spans across multiple disciplines, from aerospace to marine and civil engineering. By mastering the principles surrounding the skin friction coefficient, engineers can make informed decisions that lead to more efficient and effective designs. As technology advances, the ability to accurately measure and predict the skin friction coefficient will continue to play a crucial role in the development of innovative solutions in fluid mechanics.