nozzle throat

简明释义

喷嘴喉部

英英释义

例句

1.During testing, we noticed that the temperature at the nozzle throat exceeded safe limits.

在测试过程中，我们注意到喷嘴喉部的温度超过了安全限制。

2.The design of the rocket engine focuses on optimizing the nozzle throat to improve thrust efficiency.

火箭发动机的设计专注于优化喷嘴喉部以提高推力效率。

3.The nozzle throat plays a critical role in the performance of jet engines.

喷嘴喉部在喷气发动机的性能中起着关键作用。

4.The engineers adjusted the diameter of the nozzle throat to achieve a better flow rate.

工程师调整了喷嘴喉部的直径，以达到更好的流量。

5.A constricted nozzle throat can significantly increase the velocity of the exhaust gases.

收缩的喷嘴喉部可以显著提高废气的速度。

作文

In the field of fluid dynamics and engineering, the term nozzle throat refers to a critical area within a nozzle where the cross-sectional area is at its minimum. This specific location plays a pivotal role in the functioning of various types of nozzles, including those used in rockets, jet engines, and industrial machinery. Understanding the significance of the nozzle throat is essential for engineers and scientists who work on propulsion systems and fluid flow designs.The nozzle throat is where the flow of fluid accelerates to its maximum velocity. According to Bernoulli's principle, as the cross-sectional area decreases, the velocity of the fluid increases while the pressure decreases. This phenomenon is crucial for applications such as rocket propulsion, where achieving high exit velocities is necessary for overcoming gravitational forces. The design of the nozzle throat must be precise to ensure optimal performance and efficiency.In rocket engines, the nozzle throat is typically designed to handle extreme temperatures and pressures. The combustion gases produced during the rocket's operation pass through this narrow section, expanding rapidly as they exit into the atmosphere. The shape of the nozzle, particularly at the nozzle throat, is often contoured to facilitate smooth flow and minimize turbulence. Engineers utilize computational fluid dynamics (CFD) simulations to analyze and optimize the design of the nozzle throat, ensuring that it meets the required performance criteria.Moreover, the nozzle throat also plays a significant role in determining the thrust produced by the engine. The mass flow rate of the exhaust gases and the speed at which they exit the nozzle directly influence the thrust. Therefore, precise calculations and measurements are vital when designing the nozzle throat. Any deviations from the ideal dimensions can lead to inefficiencies and reduced performance.In addition to rockets, the concept of the nozzle throat is applicable in various engineering fields, including aerodynamics and hydraulic systems. For instance, in jet engines, the nozzle throat helps control the airflow and enhances the overall efficiency of the engine. Similarly, in hydraulic systems, the design of the nozzle throat can affect the flow rates and pressure drops across the system.Understanding the nozzle throat is not only important for engineers but also for students studying fluid mechanics and thermodynamics. It serves as an excellent example of how theoretical principles apply to real-world applications. By studying the behavior of fluids as they pass through the nozzle throat, students can gain insights into the complexities of fluid flow and the factors that influence it.In conclusion, the nozzle throat is a fundamental component in various engineering applications, particularly in propulsion systems. Its design and functionality are crucial for achieving desired performance levels. By grasping the principles surrounding the nozzle throat, engineers can innovate and improve technologies that rely on fluid dynamics, ultimately leading to advancements in transportation, aerospace, and other related fields.

在流体动力学和工程领域，术语喷嘴喉部指的是喷嘴内的一个关键区域，其横截面积最小。这个特定位置在各种类型的喷嘴的功能中起着至关重要的作用，包括用于火箭、喷气发动机和工业机械的喷嘴。理解喷嘴喉部的重要性对于从事推进系统和流体流动设计的工程师和科学家来说至关重要。喷嘴喉部是流体加速到最大速度的地方。根据伯努利原理，当横截面积减小时，流体的速度会增加，而压力会降低。这种现象对于火箭推进等应用至关重要，因为实现高排出速度是克服重力所必需的。喷嘴喉部的设计必须精确，以确保最佳性能和效率。在火箭发动机中，喷嘴喉部通常设计为能够承受极端温度和压力。在火箭运行过程中产生的燃烧气体通过这个狭窄的部分，迅速膨胀并排放到大气中。喷嘴的形状，特别是在喷嘴喉部，通常被轮廓化以促进平稳流动并最小化湍流。工程师利用计算流体动力学（CFD）模拟来分析和优化喷嘴喉部的设计，以确保其满足所需的性能标准。此外，喷嘴喉部在决定发动机产生的推力方面也起着重要作用。废气的质量流量和它们从喷嘴排出的速度直接影响推力。因此，在设计喷嘴喉部时，精确的计算和测量至关重要。任何偏离理想尺寸的情况都可能导致效率降低和性能下降。除了火箭，喷嘴喉部的概念在各种工程领域中也适用，包括空气动力学和液压系统。例如，在喷气发动机中，喷嘴喉部有助于控制气流并提高发动机的整体效率。同样，在液压系统中，喷嘴喉部的设计可以影响流量和系统中的压力降。理解喷嘴喉部不仅对工程师重要，对学习流体力学和热力学的学生也很重要。它是一个理论原则如何应用于实际应用的优秀例子。通过研究流体在通过喷嘴喉部时的行为，学生可以深入了解流体流动的复杂性及其影响因素。总之，喷嘴喉部是各种工程应用中的基本组成部分，特别是在推进系统中。其设计和功能对实现所需的性能水平至关重要。通过掌握围绕喷嘴喉部的原理，工程师可以创新和改进依赖于流体动力学的技术，最终推动交通运输、航空航天和其他相关领域的进步。