void coefficient

简明释义

空穴系数

英英释义

例句

1.In a boiling water reactor, the void coefficient (空隙系数) plays a crucial role in determining the stability of the system.

在沸水反应堆中，空隙系数 (void coefficient) 在决定系统稳定性方面起着关键作用。

2.Engineers must calculate the void coefficient (空隙系数) to ensure safety margins in nuclear reactors.

工程师必须计算空隙系数 (void coefficient) 以确保核反应堆的安全裕度。

3.The reactor's performance can be analyzed by measuring the void coefficient (空隙系数) during various operational conditions.

通过在不同操作条件下测量反应堆的空隙系数 (void coefficient)，可以分析其性能。

4.Researchers are investigating how different materials affect the void coefficient (空隙系数) in advanced reactor designs.

研究人员正在调查不同材料如何影响先进反应堆设计中的空隙系数 (void coefficient)。

5.A negative void coefficient (空隙系数) indicates that an increase in voids will decrease reactivity.

负的空隙系数 (void coefficient) 表明气泡增加会降低反应性。

作文

In the field of nuclear engineering, understanding various coefficients is crucial for the safe and efficient operation of reactors. One important concept that often arises in discussions about reactor physics is the void coefficient. The void coefficient refers to the change in reactivity of a nuclear reactor as a result of changes in the amount of coolant or moderator present in the reactor core. Specifically, it indicates how the presence or absence of a liquid (usually water) affects the reactor's ability to sustain a nuclear chain reaction.When a reactor operates normally, it is typically submerged in a coolant that absorbs heat generated during fission reactions. However, if there is a loss of coolant—often referred to as a 'loss of coolant accident' (LOCA)—the water may evaporate, creating steam bubbles or 'voids' in the reactor core. This is where the void coefficient becomes particularly significant. A positive void coefficient means that as voids form, the reactivity of the reactor increases, which can lead to an uncontrolled increase in power output. Conversely, a negative void coefficient indicates that the formation of voids decreases reactivity, thereby providing a natural feedback mechanism that can help stabilize the reactor during such incidents.The implications of the void coefficient are profound. For instance, in pressurized water reactors (PWRs), the void coefficient is generally negative. This characteristic is desirable because it enhances safety; if the coolant begins to boil away, the resulting voids will reduce the reactor's reactivity, thus preventing a potential overheating situation. On the other hand, in boiling water reactors (BWRs), the void coefficient can be positive under certain conditions, which requires careful monitoring and control to ensure safe operation.Understanding the void coefficient is not just a theoretical exercise; it has practical implications for reactor design and operational protocols. Engineers must carefully calculate this coefficient during the design phase to ensure that the reactor will behave predictably under various operating conditions. Additionally, operators must be trained to recognize the signs of coolant loss and understand how the void coefficient will affect reactor behavior during such events.In conclusion, the void coefficient is a fundamental parameter in nuclear reactor physics that plays a critical role in maintaining safety and efficiency. By comprehensively understanding the void coefficient, engineers and operators can better prepare for potential challenges that may arise during reactor operation. As technology advances and new reactor designs are developed, the importance of accurately assessing and managing the void coefficient will only continue to grow, highlighting the need for ongoing research and education in this vital area of nuclear engineering.

在核工程领域，理解各种系数对于反应堆的安全和高效运行至关重要。在关于反应堆物理的讨论中，一个重要的概念经常被提及，那就是空泡系数。空泡系数是指核反应堆在冷却剂或调节剂的数量变化时，反应堆反应性的变化。具体来说，它表示液体（通常是水）的存在或缺失如何影响反应堆维持核链式反应的能力。当反应堆正常运行时，它通常浸没在一种冷却剂中，该冷却剂吸收在裂变反应中产生的热量。然而，如果发生冷却剂损失——通常称为“冷却剂损失事故”（LOCA）——水可能会蒸发，导致反应堆核心中形成蒸汽泡或“空泡”。这就是空泡系数变得特别重要的地方。正的空泡系数意味着随着空泡的形成，反应堆的反应性增加，这可能导致功率输出的失控增加。相反，负的空泡系数则表明空泡的形成减少了反应性，从而提供了一种自然的反馈机制，可以帮助在此类事件中稳定反应堆。空泡系数的影响深远。例如，在压水反应堆（PWR）中，空泡系数通常是负的。这一特性是可取的，因为它增强了安全性；如果冷却剂开始沸腾，生成的空泡将降低反应堆的反应性，从而防止潜在的过热情况。另一方面，在沸水反应堆（BWR）中，空泡系数在某些条件下可能是正的，这需要仔细监测和控制，以确保安全操作。理解空泡系数不仅仅是一个理论练习；它对反应堆设计和操作协议具有实际意义。工程师必须在设计阶段仔细计算该系数，以确保反应堆在各种操作条件下的可预测行为。此外，操作员必须接受培训，以识别冷却剂损失的迹象，并了解空泡系数在此类事件中将如何影响反应堆行为。总之，空泡系数是核反应堆物理中的一个基本参数，在维护安全和效率方面发挥着关键作用。通过全面理解空泡系数，工程师和操作员可以更好地为反应堆操作中可能出现的挑战做好准备。随着技术的进步和新反应堆设计的发展，准确评估和管理空泡系数的重要性只会继续增长，这突显了在这一关键核工程领域进行持续研究和教育的必要性。