bluff body

简明释义

肥钝型体

英英释义

例句

1.In wind tunnel tests, the bluff body 钝体 shape was used to simulate real-world conditions.

在风洞测试中，使用<自身>钝体形状来模拟现实世界的条件。

2.The bridge's support columns act as bluff bodies 钝体, affecting the water flow underneath.

桥梁的支撑柱作为<自身>钝体，影响着下面的水流。

3.The aerodynamic design of the car includes a bluff body 钝体 to reduce drag at high speeds.

这款汽车的空气动力学设计包括一个<自身>钝体以减少高速行驶时的阻力。

4.Engineers studied the effects of the bluff body 钝体 on fluid flow in their latest project.

工程师们在他们的最新项目中研究了<自身>钝体对流体流动的影响。

5.A bluff body 钝体 can create turbulence, which is useful in mixing processes.

一个<自身>钝体可以产生湍流，这在混合过程中是有用的。

作文

In the field of fluid dynamics, understanding the behavior of different shapes in a flowing medium is crucial. One important concept that engineers and scientists often encounter is the bluff body (钝体). A bluff body is defined as a solid object with a relatively large cross-sectional area compared to its length. This shape causes significant flow separation and turbulence around it when placed in a fluid stream, such as air or water.The study of bluff bodies is essential in various applications, including aerodynamics, hydrodynamics, and architecture. For instance, buildings designed to withstand strong winds must consider how their shapes interact with airflow. Structures with bluff bodies can experience high wind loads due to the turbulence generated around them, which may lead to structural failure if not properly accounted for.One of the most common examples of a bluff body is a car. The front of a car has a large surface area that disrupts the smooth flow of air, resulting in a wake behind it. Engineers work diligently to design cars that minimize drag and improve fuel efficiency, which involves studying the characteristics of bluff bodies. By using computational fluid dynamics (CFD) simulations, they can visualize how air flows around the vehicle and make adjustments to the shape to reduce turbulence.Another example is the design of bridges. When designing a bridge, engineers must consider the impact of wind on the structure. The bridge's piers can act as bluff bodies, creating vortices that may affect the stability of the bridge. In this case, understanding the flow patterns around bluff bodies helps engineers create safer and more resilient structures.Moreover, in the realm of sports, the concept of bluff bodies also plays a role. For example, in cycling, the shape of a cyclist's body and their position on the bike can significantly affect their speed. Cyclists aim to minimize their frontal area to reduce drag, illustrating the principles of bluff body aerodynamics in action. Understanding how to position themselves effectively allows cyclists to maintain higher speeds while expending less energy.In conclusion, the concept of the bluff body (钝体) is vital in various fields, from engineering to sports. By studying how different shapes interact with fluid flows, researchers and professionals can design better vehicles, structures, and even athletic equipment. The implications of these studies extend beyond theoretical knowledge, impacting real-world applications that enhance safety, efficiency, and performance.