subsonic flow

简明释义

亚声速流

英英释义

例句

1.During subsonic flow (亚音速流动), the pressure and temperature changes are more gradual compared to supersonic conditions.

在subsonic flow (亚音速流动)期间，压力和温度变化比超音速条件下更加平缓。

2.Understanding subsonic flow (亚音速流动) is crucial for designing efficient propellers for small aircraft.

理解subsonic flow (亚音速流动)对小型飞机高效螺旋桨的设计至关重要。

3.The transition from subsonic flow (亚音速流动) to supersonic flow is a critical phase in high-speed flight.

从subsonic flow (亚音速流动)过渡到超音速流动是高速飞行中的一个关键阶段。

4.In the wind tunnel tests, engineers observed that subsonic flow (亚音速流动) around the model produced stable lift characteristics.

在风洞测试中，工程师观察到模型周围的subsonic flow (亚音速流动)产生了稳定的升力特性。

5.The aircraft was designed to operate efficiently in a range of speeds, primarily focusing on maintaining subsonic flow (亚音速流动) during its cruising phase.

这架飞机的设计旨在高效运作于多种速度范围，主要专注于在巡航阶段保持subsonic flow (亚音速流动)。

作文

In the study of fluid dynamics, understanding the concept of subsonic flow is crucial for various applications in engineering and aerodynamics. Subsonic flow refers to the movement of fluid (usually air) at speeds less than the speed of sound in that medium. This phenomenon is commonly encountered in many practical situations, such as in commercial aircraft, where the velocities are typically below Mach 1. The behavior of subsonic flow can be characterized by several key principles. One important aspect is that the pressure and density of the fluid remain relatively stable during this type of flow. This stability allows engineers to predict how an aircraft will perform under different conditions, making it essential for designing wings and fuselages that are efficient at these speeds.Another significant characteristic of subsonic flow is its tendency to exhibit smooth and streamlined characteristics. When an object moves through a fluid at subsonic speeds, the flow lines around the object remain continuous and well-defined. This contrasts with supersonic flow, where shock waves can form due to abrupt changes in pressure and velocity. Understanding these differences is vital for engineers who must ensure that their designs minimize drag and maximize efficiency.One of the most critical applications of subsonic flow is in the design of airfoils. Airfoils are structures designed to produce lift when air flows over them. At subsonic flow speeds, the lift generated by an airfoil is largely dependent on the angle of attack, which is the angle between the chord line of the airfoil and the oncoming airflow. Engineers utilize computational fluid dynamics (CFD) simulations to analyze how changes in the airfoil shape or angle affect the subsonic flow around it, allowing for optimizations that enhance performance.Moreover, subsonic flow is not limited to aviation; it also plays a significant role in other fields such as automotive engineering and HVAC (heating, ventilation, and air conditioning) systems. In automotive applications, understanding subsonic flow helps engineers design vehicles that are more aerodynamic, reducing fuel consumption and improving overall performance. Similarly, in HVAC systems, efficient subsonic flow ensures that air is distributed evenly throughout a building, providing comfort and energy efficiency.In conclusion, subsonic flow is a fundamental concept in fluid dynamics that has significant implications across various engineering disciplines. Its characteristics allow for the design and optimization of systems that operate efficiently at lower speeds. By grasping the principles of subsonic flow, engineers can innovate and create solutions that enhance performance, safety, and sustainability in numerous applications. As technology continues to advance, the understanding of subsonic flow will remain a vital area of study, ensuring that we can meet the challenges of tomorrow's engineering demands.

在流体动力学的研究中，理解“亚声速流动”的概念对于工程和空气动力学的各种应用至关重要。“亚声速流动”是指流体（通常是空气）以低于该介质音速的速度移动。这种现象在许多实际情况下都很常见，例如在商业飞机中，速度通常低于马赫数1。“亚声速流动”的行为可以通过几个关键原则来表征。一个重要方面是，在这种类型的流动过程中，流体的压力和密度保持相对稳定。这种稳定性使工程师能够预测飞机在不同条件下的性能，因此在设计翼型和机身时非常重要，以确保在这些速度下的效率。“亚声速流动”的另一个显著特征是它表现出平滑和流线型的特性。当物体以亚声速穿过流体时，物体周围的流线保持连续且明晰。这与超声速流动形成对比，在超声速流动中，由于压力和速度的急剧变化，会形成冲击波。理解这些差异对于工程师至关重要，他们必须确保设计能够最小化阻力并最大化效率。“亚声速流动”的一个最重要的应用是在翼型的设计中。翼型是旨在在空气流过时产生升力的结构。在“亚声速流动”速度下，翼型产生的升力在很大程度上取决于攻角，即翼型弦线与迎面气流之间的角度。工程师利用计算流体动力学（CFD）模拟来分析翼型形状或角度的变化如何影响周围的“亚声速流动”，从而进行优化以提高性能。此外，“亚声速流动”不仅限于航空领域，还在汽车工程和暖通空调（HVAC）系统等其他领域发挥着重要作用。在汽车应用中，理解“亚声速流动”有助于工程师设计更具空气动力学的车辆，从而减少燃料消耗并改善整体性能。同样，在HVAC系统中，高效的“亚声速流动”确保空气在建筑物内均匀分布，提供舒适和节能。总之，“亚声速流动”是流体动力学中的一个基本概念，对各个工程学科具有重要意义。它的特性使得在较低速度下操作的系统的设计和优化成为可能。通过掌握“亚声速流动”的原理，工程师能够创新并创造出提高性能、安全性和可持续性的解决方案，适用于众多应用。随着技术的不断进步，对“亚声速流动”的理解将继续成为一个重要的研究领域，确保我们能够应对未来工程需求的挑战。