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LID-DRIVEN CAVITY WITH HEAT AND MASS TRANSPORT

机译:热和大众运输的带盖腔

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The configurations of steady two-dimensional flow accompanied by heat and mass transport in a shallow lid-driven cavity with a moving heated lid and a moving cooled lid were investigated numerically in a process engineering context-of drying. A continuation method was applied to track the branches of the diagram of flow configurations in their dependence on various parameters and to determine their linear stability by an Arnoldi-based method. Analytical solutions for limiting situations of the geometrical and flow parameters, obtained by computer algebra, were compared with numerical results. In a parameter study for horizontal and vertical orientation of the cavity, the dependence of heat and mass transfer rates on the velocities of the walls and on the species concentration boundary conditions was investigated. Among the results found, for a vertical cavity, there are two turning points and flow configurations with minimal heat and mass transfer, and for a horizontal cavity heated from below a Hopf bifurcation indicating inception of oscillatory flow regimes.
机译:在干燥的过程工程环境中,对带有运动加热盖和运动冷却盖的浅盖驱动空腔中二维热流与传质的稳定二维流动进行了数值研究。应用了一种连续方法来跟踪流动配置图的分支,使其依赖于各种参数,并通过基于Arnoldi的方法确定其线性稳定性。通过计算机代数获得的用于限制几何和流量参数情况的解析解与数值结果进行了比较。在腔的水平和垂直方向的参数研究中,研究了传热和传质速率对壁速度和物种浓度边界条件的依赖性。在发现的结果中,对于垂直腔,有两个转折点和流动结构,传热和传质最少,对于从霍普夫分叉下方加热的水平腔,表明出现了振荡流态。

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