平板上层流边界层流动的数值模拟

Nasser Algaidy, Ali El Shrif
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引用次数: 0

摘要

了解边界层(BL)流动的动态和热特性对于许多工程设备的最佳设计和运行条件是必不可少的一步。边界层内的流动特性是由两种相互竞争支配流动的力所控制的,即粘性力和惯性力。流动的状态是由这两种力在边界层内的相对支配作用决定的。自20世纪初以来,已有许多BL流型的理论解。在层流范围内和流动分离发生前的简单边界层流动构型,理论解是严格可行的。对于边界层流动问题具有复杂流动构型的实际情况,CFD技术是解决这类流动的最合适方法。在本研究中,对平板上的层流边界层流动进行了数值求解,从而对边界层流动进行了详细的分析,其精度与理论解相当
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical simulation of the laminar boundary layer flow over a flat plate
Understanding the dynamic and thermal characteristics of the boundary layer (BL) flows is an essential step toward the best design and operational conditions for many engineering devices. Flow characteristics within the boundary layer are governed by two forces that are in a mutual race to dominate the flow, the viscous and inertial forces. The state of the flow is determined by the relative domination of these two forces inside the boundary layer zone. Theoretical solutions for many BL flow types existed since the beginning of the 20th century. Theoretical solutions are strictly possible for simple boundary layer flow configurations within the laminar range and before flow separation occurs. For practical situations where boundary layer flow problems are prescribed with complex flow configurations, CFD techniques represent the most suitable approach to tackle such types of flows. In this study, the laminar boundary layer flow over a flat plate has been solved numerically leading to a detailed analysis of the boundary layer flow with accuracy comparable to that of the theoretical solution
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