film-cooling hole

简明释义

薄膜冷却孔

英英释义

例句

1.A new coating material was tested around the film-cooling holes to improve durability.

一种新的涂层材料在膜冷却孔周围进行测试，以提高耐用性。

2.During the manufacturing process, precise placement of film-cooling holes is essential.

在制造过程中，膜冷却孔的精确放置至关重要。

3.Engineers analyze the airflow through the film-cooling holes to optimize cooling performance.

工程师分析通过膜冷却孔的气流以优化冷却性能。

4.The turbine design incorporates multiple film-cooling holes to enhance thermal efficiency.

涡轮设计采用多个膜冷却孔以提高热效率。

5.The effectiveness of film-cooling holes is crucial in preventing overheating during operation.

在运行过程中，膜冷却孔的有效性对于防止过热至关重要。

作文

In the realm of modern engineering and thermal management, the concept of a film-cooling hole plays a crucial role, particularly in the design of gas turbines and other high-temperature applications. A film-cooling hole is essentially a small aperture through which a cooling film of air or liquid is introduced to protect critical components from extreme heat. This innovative technique is vital for enhancing the performance and longevity of engines, especially in aerospace and power generation sectors.The fundamental principle behind a film-cooling hole is based on the creation of a protective layer of cooler fluid that adheres to the surface of a hot component. When hot gases flow over these surfaces, the cooling film acts as a barrier, reducing the heat transfer to the material underneath. This mechanism is particularly important in gas turbines, where temperatures can exceed the melting point of the turbine materials. By strategically placing film-cooling holes in the turbine blades and vanes, engineers can significantly improve the thermal efficiency of the engine while preventing structural failure due to overheating.Moreover, the design of film-cooling holes is not a simple task; it requires a deep understanding of fluid dynamics and heat transfer principles. The shape, size, and orientation of these holes are meticulously calculated to optimize the cooling effect while minimizing the impact on the overall aerodynamic performance of the turbine. Computational Fluid Dynamics (CFD) simulations are often employed to analyze the flow characteristics around the cooling holes, allowing engineers to refine their designs before physical testing.Another aspect to consider is the material selection for components utilizing film-cooling holes. Advanced materials, such as superalloys, are commonly used due to their ability to withstand high temperatures and corrosive environments. These materials are often coated with thermal barrier coatings (TBCs) to further enhance their resistance to heat. The integration of film-cooling holes with these advanced materials creates a synergistic effect that leads to improved performance and durability.In addition to gas turbines, film-cooling holes are also utilized in various industrial applications, including combustion engines and heat exchangers. Their versatility makes them an essential feature in any system where temperature management is critical. As industries continue to push the boundaries of efficiency and performance, the role of film-cooling holes will undoubtedly become even more significant.In conclusion, the concept of a film-cooling hole is integral to modern thermal management strategies in engineering. By providing a means to protect components from extreme heat, these cooling holes enhance the performance and reliability of systems operating under harsh conditions. As technology advances, the design and application of film-cooling holes will continue to evolve, paving the way for more efficient and durable engineering solutions. Understanding this concept is essential for anyone involved in the fields of mechanical engineering, aerospace, and energy production, as it represents a critical intersection of innovation, material science, and thermodynamics.

在现代工程和热管理领域，film-cooling hole 的概念发挥着至关重要的作用，特别是在燃气涡轮和其他高温应用的设计中。film-cooling hole 本质上是一个小孔，通过它可以引入一层冷却空气或液体，以保护关键组件免受极端热量的影响。这种创新技术对于提高发动机，尤其是在航空航天和发电行业中的性能和寿命至关重要。film-cooling hole 的基本原理是创建一层附着在热组件表面的冷却流体保护层。当热气体流过这些表面时，冷却膜作为屏障，减少热量向下方材料的传递。这一机制在燃气涡轮中尤为重要，因为温度可能超过涡轮材料的熔点。通过在涡轮叶片和叶片中战略性地放置 film-cooling holes，工程师可以显著提高发动机的热效率，同时防止由于过热导致的结构失效。此外，film-cooling holes 的设计并不是一项简单的任务；它需要对流体动力学和热传递原理有深入的理解。这些孔的形状、大小和方向经过精确计算，以优化冷却效果，同时最小化对涡轮整体气动性能的影响。计算流体动力学 (CFD) 模拟通常用于分析冷却孔周围的流动特性，使工程师能够在进行物理测试之前完善他们的设计。另一个需要考虑的方面是采用 film-cooling holes 的组件的材料选择。由于其能够承受高温和腐蚀环境，先进材料（如超级合金）通常被使用。这些材料通常涂有热障涂层 (TBC)，以进一步增强它们的耐热性。将 film-cooling holes 与这些先进材料结合使用，产生了协同效应，从而提高了性能和耐用性。除了燃气涡轮，film-cooling holes 还广泛应用于各种工业应用，包括内燃机和热交换器。它们的多功能性使其成为任何温度管理至关重要的系统中的基本特征。随着各行业不断推动效率和性能的边界，film-cooling holes 的作用无疑会变得更加重要。总之，film-cooling hole 的概念是现代热管理策略中不可或缺的一部分。通过提供保护组件免受极端热量影响的手段，这些冷却孔提高了在恶劣条件下运行的系统的性能和可靠性。随着技术的进步，film-cooling holes 的设计和应用将继续发展，为更高效和耐用的工程解决方案铺平道路。理解这一概念对任何参与机械工程、航空航天和能源生产领域的人来说都是至关重要的，因为它代表了创新、材料科学和热力学的关键交汇点。