adiabatic change

简明释义

绝热变化

英英释义

例句

1.An adiabatic change 绝热变化 is essential in understanding the behavior of gases in engines.

理解发动机中气体的行为时，adiabatic change 绝热变化 是至关重要的。

2.The expansion of gas in a piston can be modeled as an adiabatic change 绝热变化 if it happens quickly enough.

如果气体在活塞中的膨胀发生得足够快，可以将其建模为一个 adiabatic change 绝热变化。

3.During an adiabatic change 绝热变化, the temperature of a gas can drop significantly as it expands.

在 adiabatic change 绝热变化 过程中，气体在膨胀时温度可能显著下降。

4.In meteorology, an adiabatic change 绝热变化 explains how air rises and cools without losing heat to the environment.

在气象学中，adiabatic change 绝热变化 解释了空气如何在上升并冷却的同时不向环境散失热量。

5.In a thermodynamic process, an adiabatic change 绝热变化 occurs when no heat is exchanged with the surroundings.

在热力学过程中，adiabatic change 绝热变化 是指与周围环境没有热量交换的情况。

作文

In the study of thermodynamics, one of the fundamental concepts is the idea of an adiabatic change, which refers to a process in which no heat is exchanged with the surroundings. This means that during an adiabatic change, the system is perfectly insulated from its environment, leading to changes in temperature and pressure solely due to work done on or by the system. Understanding this concept is crucial for various applications in physics and engineering, especially in areas such as heat engines, refrigerators, and atmospheric science. To illustrate this concept, consider a piston filled with gas. If we compress the gas quickly enough that there is no time for heat to flow in or out of the gas, the process can be considered adiabatic. As the gas is compressed, its internal energy increases, resulting in a rise in temperature. Conversely, if the gas expands rapidly without exchanging heat, it cools down. This behavior exemplifies the first law of thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system. In an adiabatic change, since there is no heat transfer, the equation simplifies to reflect only the work done. The mathematical representation of an adiabatic change can be derived from the ideal gas law and the principles of thermodynamics. For an ideal gas undergoing an adiabatic change, the relationship between pressure and volume can be expressed as PV^γ = constant, where γ (gamma) is the heat capacity ratio (Cp/Cv). This relationship helps predict how the gas will behave under different conditions, making it a powerful tool in both theoretical and practical applications. In atmospheric science, adiabatic changes play a significant role in understanding weather patterns and phenomena such as cloud formation. When air rises, it expands due to lower pressure at higher altitudes. If this expansion occurs without heat exchange, the air cools adiabatically, potentially reaching a temperature where condensation occurs, forming clouds. This process highlights the importance of adiabatic changes in meteorology and their impact on climate and weather systems. In conclusion, the concept of adiabatic change is vital for comprehending various physical processes. Whether in the context of engines, refrigeration, or atmospheric dynamics, recognizing how systems behave under adiabatic changes enables scientists and engineers to design more efficient systems and predict natural phenomena accurately. The implications of adiabatic changes extend beyond academic theory; they have real-world applications that affect our daily lives, from the efficiency of our appliances to the weather we experience. Therefore, a solid understanding of this concept is essential for anyone studying thermodynamics or related fields.

在热力学研究中，一个基本概念是“绝热变化”的概念，指的是一个过程中与周围环境没有热量交换。这意味着在一个绝热变化中，系统与其环境完全隔离，导致温度和压力的变化仅仅是由于对系统所做的功或由系统所做的功。理解这个概念对于物理和工程中的各种应用至关重要，特别是在热机、冰箱和大气科学等领域。为了说明这个概念，考虑一个充满气体的活塞。如果我们快速压缩气体，使得没有时间让热量流入或流出气体，这个过程可以被视为绝热的。当气体被压缩时，它的内能增加，导致温度升高。相反，如果气体迅速膨胀而不交换热量，它会冷却。这种行为体现了热力学第一定律，该定律指出，系统内能的变化等于加到系统上的热量减去系统所做的功。在绝热变化中，由于没有热量转移，该方程简化为仅反映所做的功。绝热变化的数学表示可以从理想气体定律和热力学原理中推导出来。对于经历绝热变化的理想气体，压力和体积之间的关系可以表示为PV^γ = 常数，其中γ（伽玛）是热容比（Cp/Cv）。这种关系有助于预测气体在不同条件下的行为，使其成为理论和实际应用中的强大工具。在大气科学中，绝热变化在理解天气模式和现象（如云的形成）中发挥着重要作用。当空气上升时，由于高海拔处的低压，它会膨胀。如果这种膨胀发生在没有热量交换的情况下，空气会绝热冷却，可能降到一个温度，在此温度下会发生凝结，形成云。这一过程突显了绝热变化在气象学中的重要性及其对气候和天气系统的影响。总之，绝热变化的概念对于理解各种物理过程至关重要。无论是在发动机、制冷还是大气动态的背景下，认识到系统在绝热变化下的行为使科学家和工程师能够设计更高效的系统并准确预测自然现象。绝热变化的影响超越了学术理论；它们具有影响我们日常生活的实际应用，从我们电器的效率到我们所经历的天气。因此，扎实理解这一概念对于任何学习热力学或相关领域的人来说都是必不可少的。