hot-wire measurement

简明释义

热线式测量

英英释义

例句

1.The hot-wire measurement technique is essential for studying turbulence in fluid dynamics.

热丝测量技术对于研究流体动力学中的湍流至关重要。

2.In the lab, we relied on hot-wire measurement for precise velocity readings of the fluid.

在实验室中，我们依靠热丝测量来获得流体的精确速度读数。

3.Using hot-wire measurement, we were able to determine the speed of the air exiting the jet engine.

通过使用热丝测量，我们能够确定喷气发动机排出的空气速度。

4.The engineer used hot-wire measurement to assess the airflow in the ventilation system.

工程师使用热丝测量来评估通风系统中的气流。

5.He explained how hot-wire measurement can be applied in wind tunnel experiments.

他解释了如何在风洞实验中应用热丝测量。

作文

In the field of fluid dynamics, accurate measurements are crucial for understanding the behavior of fluids under various conditions. One of the most effective techniques used for measuring flow velocity is the hot-wire measurement. This method involves using a thin wire that is heated electrically. As fluid flows past the wire, it cools down, and the rate of cooling is directly related to the velocity of the fluid. This relationship allows researchers to obtain precise measurements of flow characteristics in various applications, from engineering to environmental science.The principle behind hot-wire measurement is based on the heat transfer from the wire to the surrounding fluid. When the wire is heated, it reaches a steady-state temperature. As the fluid moves over the wire, it carries away some of the heat, which causes the wire to cool. By measuring the change in temperature of the wire and knowing its electrical resistance, one can calculate the flow velocity. This technique is particularly advantageous because it provides real-time data and can be used in turbulent flow conditions where other measurement methods may fail.One of the significant benefits of hot-wire measurement is its sensitivity. The technique can detect very small changes in flow velocity, making it ideal for applications requiring high precision. For instance, in aerodynamics, engineers often use this method to study airflow around aircraft wings or other objects. Understanding how air interacts with surfaces can lead to better designs that improve fuel efficiency and performance.Moreover, hot-wire measurement is not limited to air; it can also be applied to liquids, expanding its utility in various fields. In hydraulic engineering, for example, it is used to measure water flow in rivers and canals, providing essential data for flood management and environmental conservation efforts. The versatility of this technique makes it a valuable tool for scientists and engineers alike.Despite its advantages, hot-wire measurement does have some limitations. One of the main challenges is the need for careful calibration to ensure accurate readings. Additionally, the presence of contaminants in the fluid can affect the measurements, leading to potential inaccuracies. Therefore, while hot-wire measurement is an excellent tool for fluid velocity measurement, it is essential to consider these factors when interpreting the results.In conclusion, hot-wire measurement is a powerful technique that plays a vital role in fluid dynamics research and applications. Its ability to provide precise and real-time measurements of flow velocity makes it indispensable in various industries. As technology continues to advance, we can expect further improvements in the accuracy and reliability of this method, allowing for even greater insights into fluid behavior. Understanding and mastering the principles of hot-wire measurement will undoubtedly enhance our capabilities in both scientific research and practical engineering solutions.

在流体动力学领域，准确的测量对于理解流体在各种条件下的行为至关重要。热丝测量是用于测量流速的最有效技术之一。这种方法涉及使用一根电加热的细丝。当流体流过细丝时，它会冷却，而冷却的速度与流体的速度直接相关。这种关系使研究人员能够获得各种应用中流动特性的精确测量，从工程到环境科学。热丝测量的原理基于热量从细丝传递到周围流体。当细丝被加热时，它达到一个稳态温度。随着流体流过细丝，它带走了一些热量，这导致细丝冷却。通过测量细丝的温度变化并知道其电阻，可以计算出流速。这种技术特别有利，因为它提供实时数据，并且可以用于湍流条件下，其他测量方法可能失败的情况。热丝测量的一个显著优点是其灵敏度。这种技术可以检测非常小的流速变化，使其成为需要高精度应用的理想选择。例如，在空气动力学中，工程师们经常使用这种方法研究气流在飞机机翼或其他物体周围的流动。理解空气如何与表面相互作用可以导致更好的设计，从而提高燃油效率和性能。此外，热丝测量不仅限于空气；它也可以应用于液体，扩展了其在各个领域的实用性。在水利工程中，例如，它被用于测量河流和运河中的水流，为洪水管理和环境保护工作提供必要的数据。这种技术的多功能性使其成为科学家和工程师的重要工具。尽管有其优点，热丝测量也有一些局限性。主要挑战之一是需要仔细校准以确保读数的准确性。此外，流体中的污染物可能会影响测量，导致潜在的不准确。因此，虽然热丝测量是流速测量的优秀工具，但在解释结果时必须考虑这些因素。总之，热丝测量是一种强大的技术，在流体动力学研究和应用中发挥着重要作用。其提供精确和实时流速测量的能力使其在各行各业中不可或缺。随着技术的不断进步，我们可以期待这种方法在准确性和可靠性方面的进一步改善，从而为流体行为提供更深入的见解。理解和掌握热丝测量的原理无疑将增强我们在科学研究和实际工程解决方案中的能力。