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首页> 外文期刊>International Journal of Aerodynamics >Hydraulic analogy and visualisation of two-dimensional compressible fluid flows: part 2: water table experiments
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Hydraulic analogy and visualisation of two-dimensional compressible fluid flows: part 2: water table experiments

机译：二维可压缩流体流动的液压类比和可视化：第2部分：水表实验

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>In part 1, the theoretical aspects of hydraulic analogy are given in detail. In this part, the water table experiments are reported. Pictures of the flow patterns over different models show the formations of analogous shock waves and expansion fans. Pointed airfoils are tested first. Both biconvex and diamond airfoils are used. Busemann biplane model is included. The formation of a shock over a sharp pointed concave body is also tested. For blunt bodies, flow over a cylinder with a detached bow shock is studied. A sharp and not-so-sharp-spike added to the cylinder and the flow patterns are compared. Shocks inside and outside convergent-divergent nozzles are shown. Also, some results are reported for an experiment with a very simple arrangement of a plate in a plastic container, where the model is fixed, and the water is poured on the plate. Such an arrangement can be used for classroom demonstrations. Issues of manufacturing the models, nozzles and airfoils, are studied as well. Measurement techniques for obtaining quantitative results are briefly mentioned. Finally, concluding remarks about the educational use of this experiment are discussed.
机译：>在第1部分中，详细给出了液压类比的理论方面。在这部分中，报告了水表实验。不同模型上的流动模式的图片显示了类似冲击波和膨胀风扇的形成。首先测试尖头翼型。使用Biconvex和金刚石翼型。包括Busemann双行模型。还测试了在尖锐的凹体上进行冲击。对于钝体，研究了在具有分离的弓形冲击的圆柱体上流。将添加到汽缸的锋利和不太尖锐的尖峰和流动模式进行比较。显示了内部和外部会聚分歧喷嘴的冲击。此外，据报道了一些结果用于实验，在塑料容器中具有非常简单的板材布置，其中模型是固定的，并且将水倒在板上。这种布置可用于教室示范。还研究了制造模型，喷嘴和翼型的问题。简要提及获得定量结果的测量技术。最后，讨论了关于该实验的教育使用的结论性评论。

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