quasi-steady method

简明释义

准稳定法

英英释义

例句

1.The research team adopted a quasi-steady method 准稳态方法 for evaluating the mechanical properties of materials.

研究小组采用了 准稳态方法 准稳态方法 来评估材料的机械性能。

2.Using a quasi-steady method 准稳态方法 can help in estimating the efficiency of renewable energy systems.

使用 准稳态方法 准稳态方法 可以帮助估算可再生能源系统的效率。

3.In fluid dynamics, the quasi-steady method 准稳态方法 is often used to simplify the analysis of flow around objects.

在流体动力学中，准稳态方法 准稳态方法 常用于简化物体周围的流动分析。

4.The quasi-steady method 准稳态方法 allows engineers to predict the thermal performance of systems under varying conditions.

准稳态方法 准稳态方法 使工程师能够预测系统在不同条件下的热性能。

5.In the modeling of heat exchangers, the quasi-steady method 准稳态方法 simplifies complex transient behaviors.

在热交换器的建模中，准稳态方法 准稳态方法 简化了复杂的瞬态行为。

作文

The concept of the quasi-steady method is a fundamental principle in various fields of science and engineering, particularly in thermodynamics and fluid mechanics. This method allows researchers and engineers to simplify complex dynamic systems by assuming that certain parameters remain nearly constant over a short period of time. Essentially, the quasi-steady method serves as a bridge between fully dynamic and static analyses, providing a more manageable approach to understanding transient phenomena.In many practical applications, systems do not reach true steady-state conditions due to the influence of external factors or inherent system dynamics. However, for small perturbations around an equilibrium point, it can be reasonable to assume that the system behaves in a quasi-steady manner. This assumption leads to significant simplifications in mathematical modeling, making it easier to predict system behavior without having to solve highly complex differential equations.For instance, consider the case of a heat exchanger. In a heat exchanger, fluids transfer heat from one to another. During operation, the temperatures of the fluids change continuously. By applying the quasi-steady method, engineers can analyze the heat transfer process by treating the temperature changes as if they were occurring at a constant rate over small intervals. This allows them to derive useful equations that describe the heat transfer efficiency without delving into the complexities of transient heat conduction.Another application of the quasi-steady method can be found in aerodynamics, particularly when analyzing the lift and drag forces acting on an aircraft wing during takeoff. As the aircraft accelerates down the runway, the airflow around the wing changes dynamically. However, for small increments of speed, it is often acceptable to assume that the aerodynamic forces can be approximated as being constant. This simplification makes it possible to calculate the required lift and drag forces with greater ease, ultimately aiding in the design and optimization of aircraft.While the quasi-steady method provides valuable insights, it is essential to recognize its limitations. The primary assumption of this method is that the system undergoes only small deviations from equilibrium. If the changes are too large or occur too rapidly, the assumptions may break down, leading to inaccurate predictions. Therefore, engineers and scientists must carefully evaluate the applicability of the quasi-steady method in their specific contexts.In conclusion, the quasi-steady method is a powerful analytical tool that simplifies the study of dynamic systems by allowing certain parameters to be treated as constant over short durations. Its applications span various disciplines, including thermodynamics, fluid mechanics, and aerodynamics, where it aids in the design and analysis of systems under transient conditions. While it offers significant advantages in terms of simplicity and practicality, users must remain aware of its limitations and ensure that the assumptions made are valid for the scenario at hand. By doing so, they can effectively leverage the quasi-steady method to enhance their understanding and performance in complex engineering challenges.

“准稳态方法”是科学和工程各个领域的基本原则，特别是在热力学和流体力学中。该方法允许研究人员和工程师通过假设某些参数在短时间内保持近似恒定来简化复杂的动态系统。本质上，“准稳态方法”作为完全动态分析和静态分析之间的桥梁，提供了一种更可管理的方法来理解瞬态现象。在许多实际应用中，由于外部因素或固有系统动态的影响，系统不会达到真正的稳态条件。然而，对于平衡点附近的小扰动，假设系统以准稳态方式运行是合理的。这一假设导致数学建模的显著简化，使得预测系统行为变得更容易，而无需解决高度复杂的微分方程。例如，考虑一个热交换器的案例。在热交换器中，流体之间进行热量传递。在操作过程中，流体的温度不断变化。通过应用“准稳态方法”，工程师可以通过将温度变化视为在小时间间隔内以恒定速率发生来分析热传递过程。这使他们能够推导出描述热传递效率的有用方程，而无需深入研究瞬态热传导的复杂性。“准稳态方法”的另一个应用可以在气动学中找到，尤其是在分析飞机机翼在起飞过程中的升力和阻力时。当飞机在跑道上加速时，机翼周围的气流动态变化。然而，对于小速度增量，通常可以接受假设气动力可以近似为恒定。这种简化使得计算所需的升力和阻力变得更加容易，从而最终帮助优化和设计飞机。虽然“准稳态方法”提供了宝贵的见解，但必须认识到其局限性。该方法的主要假设是系统只经历小的平衡偏差。如果变化过大或发生得太快，这些假设可能会失效，导致不准确的预测。因此，工程师和科学家必须仔细评估“准稳态方法”在其特定背景下的适用性。总之，“准稳态方法”是一种强大的分析工具，通过允许在短时间内将某些参数视为恒定，简化了动态系统的研究。它的应用跨越多个学科，包括热力学、流体力学和气动学，在瞬态条件下帮助系统的设计和分析。虽然在简化和实用性方面提供了显著优势，但用户必须意识到其局限性，并确保所做的假设在特定场景中是有效的。通过这样做，他们可以有效利用“准稳态方法”来增强对复杂工程挑战的理解和表现。