subcritical speed

简明释义

亚临界速度

英英释义

例句

1.The engineers designed the system to operate below subcritical speed (亚临界速度) to avoid cavitation.

工程师设计系统以在亚临界速度（亚临界速度）以下运行，以避免气蚀。

2.The turbine operates efficiently at a subcritical speed (亚临界速度), minimizing energy loss.

涡轮在亚临界速度（亚临界速度）下高效运行，最大限度地减少能量损失。

3.In fluid dynamics, maintaining a subcritical speed (亚临界速度) is crucial for stable flow conditions.

在流体动力学中，保持亚临界速度（亚临界速度）对稳定流动条件至关重要。

4.When the fan reaches subcritical speed (亚临界速度), it produces less noise compared to higher speeds.

当风扇达到亚临界速度（亚临界速度）时，与更高速度相比，产生的噪音更小。

5.At subcritical speed (亚临界速度), the pump maintains a constant flow rate without fluctuations.

在亚临界速度（亚临界速度）下，泵保持恒定的流量，没有波动。

作文

In the field of engineering, particularly in mechanical and aerospace disciplines, understanding the concept of subcritical speed is crucial for the design and analysis of rotating machinery. The term subcritical speed refers to the speed range below the critical speed of a rotating system, where the system operates in a stable manner without experiencing significant vibrations or resonance. This concept is vital for ensuring the longevity and reliability of machines such as turbines, engines, and rotors.When a rotating object, such as a shaft or a rotor, spins at subcritical speed, it operates below a certain threshold known as the critical speed. At this point, the forces acting on the rotating body are balanced, and the system remains stable. Engineers must carefully calculate the critical speed to avoid operating within a range that could lead to excessive vibrations, which can cause mechanical failure or damage.The importance of subcritical speed becomes evident when considering the dynamic behavior of rotating systems. For instance, if a turbine operates at speeds approaching its critical speed, it may encounter resonant frequencies that amplify vibrations. These vibrations can lead to fatigue in materials, increased wear, and ultimately catastrophic failure. Therefore, engineers design systems to operate well within the subcritical speed range, ensuring safety and efficiency.Moreover, understanding subcritical speed is not limited to just avoiding critical speeds; it also plays a role in optimizing performance. In many applications, operating at lower speeds can reduce energy consumption and improve efficiency. For example, in electric motors, running at subcritical speed can enhance torque output while minimizing heat generation, leading to improved overall performance.In addition to mechanical systems, the concept of subcritical speed is also applicable in other fields, such as fluid dynamics. For instance, in the study of fluid flow through pipes or ducts, the flow velocity can be categorized into subcritical and supercritical regimes. Subcritical flow, similar to subcritical speed, is characterized by lower velocities and stable flow conditions, while supercritical flow involves higher velocities and potential turbulence.To summarize, the term subcritical speed is essential in understanding the dynamics of rotating machinery and fluid systems. It denotes the operational range below critical speeds, ensuring stability and efficiency in various engineering applications. By designing systems to operate within the subcritical speed range, engineers can prevent mechanical failures and optimize performance, ultimately contributing to safer and more reliable technologies. As technology continues to advance, the principles surrounding subcritical speed will remain fundamental in the ongoing pursuit of innovation in engineering and design.

在工程领域，特别是在机械和航空航天学科中，理解“亚临界速度”这一概念对于旋转机械的设计和分析至关重要。“亚临界速度”一词指的是旋转系统的临界速度以下的速度范围，在这个范围内，系统以稳定的方式运行，不会经历显著的振动或共振。这个概念对于确保涡轮机、发动机和转子等机器的耐用性和可靠性至关重要。当一个旋转物体，例如轴或转子，以“亚临界速度”旋转时，它的运行速度低于某个被称为临界速度的阈值。在这一点上，作用在旋转体上的力是平衡的，系统保持稳定。工程师必须仔细计算临界速度，以避免在可能导致过度振动的范围内运行，这可能会导致机械故障或损坏。“亚临界速度”的重要性在于考虑旋转系统的动态行为。例如，如果涡轮机在接近其临界速度的速度下运行，它可能会遇到共振频率，从而放大振动。这些振动可能导致材料疲劳、磨损增加，并最终导致灾难性故障。因此，工程师会设计系统以在“亚临界速度”范围内运行，从而确保安全性和效率。此外，理解“亚临界速度”不仅限于避免临界速度；它还在优化性能方面发挥作用。在许多应用中，以较低速度运行可以减少能耗并提高效率。例如，在电动机中，以“亚临界速度”运行可以增强扭矩输出，同时最小化热量产生，从而提高整体性能。除了机械系统外，“亚临界速度”的概念也适用于其他领域，例如流体动力学。例如，在研究流体通过管道或风道的流动时，流速可以分为亚临界和超临界状态。亚临界流动，类似于“亚临界速度”，特征是较低的速度和稳定的流动条件，而超临界流动则涉及更高的速度和潜在的湍流。总之，“亚临界速度”这一术语对于理解旋转机械和流体系统的动态行为至关重要。它表示临界速度以下的操作范围，确保各种工程应用中的稳定性和效率。通过设计系统在“亚临界速度”范围内运行，工程师可以防止机械故障并优化性能，最终有助于更安全、更可靠的技术。随着技术的不断进步，围绕“亚临界速度”的原理将继续在工程和设计创新的持续追求中发挥基础性作用。