reactivity swing

简明释义

反应性摆幅

英英释义

例句

1.In nuclear physics, the reactivity swing can affect the stability of the reactor core.

在核物理中，反应性波动可能影响反应堆核心的稳定性。

2.Engineers observed a reactivity swing in the fuel mixture under varying pressure conditions.

工程师观察到在不同压力条件下燃料混合物的反应性波动。

3.Monitoring the reactivity swing is crucial for ensuring safety in chemical manufacturing processes.

监测反应性波动对于确保化学制造过程的安全至关重要。

4.The research highlighted the reactivity swing that occurs during the catalytic process.

研究强调了催化过程中发生的反应性波动。

5.The experiment showed a significant reactivity swing in the chemical properties of the substance when exposed to different temperatures.

实验显示该物质在不同温度下表现出显著的反应性波动。

作文

In the field of nuclear physics, the term reactivity swing refers to the fluctuations in the reactivity of a nuclear reactor during its operation. These fluctuations can occur due to various factors, including changes in temperature, pressure, and neutron population within the reactor core. Understanding the concept of reactivity swing is crucial for ensuring the safe and efficient operation of nuclear reactors. Reactivity itself is a measure of the ability of a nuclear reactor to sustain a chain reaction. When the reactivity increases, the reactor produces more power, while a decrease in reactivity leads to reduced power output. The reactivity swing can be influenced by several operational parameters, such as control rod positions, coolant flow rates, and fuel composition. One of the main reasons why monitoring reactivity swing is essential is that excessive swings can lead to safety concerns. For example, if a reactor experiences a rapid increase in reactivity, it may result in an uncontrollable power surge, potentially causing damage to the reactor core or even leading to a meltdown. Conversely, if the reactivity drops too low, the reactor may shut down unexpectedly, disrupting power supply and causing economic losses. Therefore, reactor operators must continuously monitor and manage reactivity swing to maintain stability and safety.The management of reactivity swing involves the use of control rods, which are inserted into or withdrawn from the reactor core to adjust the level of reactivity. By carefully controlling the position of these rods, operators can mitigate the effects of reactivity fluctuations and ensure a consistent power output. Additionally, advanced computer algorithms are often employed to predict and respond to potential swings in reactivity, allowing for proactive measures to be taken before any issues arise.Moreover, the design of modern reactors incorporates features that help minimize reactivity swing. For instance, some reactors are designed with negative temperature coefficients, meaning that as the temperature rises, the reactivity decreases. This inherent safety feature acts as a natural feedback mechanism, reducing the likelihood of excessive reactivity swings. In conclusion, the understanding of reactivity swing is vital in the realm of nuclear energy. It encompasses the dynamic behavior of a reactor's reactivity and highlights the importance of maintaining control over these fluctuations. As we continue to rely on nuclear power as a significant energy source, the safe management of reactivity swing will remain a key focus for engineers and operators alike. Ensuring that reactors operate within safe reactivity limits not only protects the infrastructure but also safeguards public health and the environment, making it a crucial aspect of modern nuclear engineering practices.

在核物理领域，术语反应性波动指的是核反应堆在运行过程中反应性波动的情况。这些波动可能由于多种因素而发生，包括温度、压力和反应堆核心内中子数量的变化。理解反应性波动的概念对于确保核反应堆的安全和高效运行至关重要。反应性本身是核反应堆维持链式反应能力的衡量标准。当反应性增加时，反应堆产生更多的能量，而反应性降低则导致输出功率减少。反应性波动可以受到多个操作参数的影响，例如控制棒的位置、冷却剂流速和燃料成分。监测反应性波动至关重要的主要原因之一是，过度的波动可能导致安全隐患。例如，如果反应堆经历快速的反应性增加，可能会导致无法控制的功率激增，从而可能对反应堆核心造成损害，甚至导致熔毁。相反，如果反应性降低到过低的水平，反应堆可能会意外停机，打断电力供应并造成经济损失。因此，反应堆操作员必须持续监测和管理反应性波动以保持稳定性和安全性。对反应性波动的管理涉及使用控制棒，这些控制棒被插入或拔出反应堆核心以调整反应性水平。通过仔细控制这些棒的位置，操作员可以减轻反应性波动的影响，并确保稳定的功率输出。此外，通常会采用先进的计算机算法来预测和应对潜在的反应性波动，从而允许在出现问题之前采取主动措施。此外，现代反应堆的设计包含有助于最小化反应性波动的特性。例如，一些反应堆设计为具有负温度系数，这意味着随着温度升高，反应性降低。这种内在的安全特性作为一种自然反馈机制，降低了过度反应性波动的可能性。总之，理解反应性波动在核能领域至关重要。它涵盖了反应堆反应性的动态行为，并突显了控制这些波动的重要性。随着我们继续依赖核能作为重要的能源来源，安全管理反应性波动将始终是工程师和操作员关注的重点。确保反应堆在安全的反应性范围内运行不仅保护基础设施，还保障公众健康和环境安全，使其成为现代核工程实践中的关键方面。