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来源：百度知道 编辑：UC知道 时间：2024/05/28 13:29:09
4 . Presentation of the results
The size of the recirculation region for s1 was visualized by sticking wool tufts in the surface ofthe models, as well as in the bottom and lateral walls of the wind tunnel. The visualization of the flow obtained for a Reynolds number of 8x10^4 is schematically represented in Fig.4, where the lines depicted are a qualitative representation of the stream lines. The stream lines computed numerically for each hill configuration can be observed in this same figure. The values of the stream lines are not equally spaced, being selected to allow a good visualization of the main flow characteristics.
It can be observed in this figure how the size of the recirculating region is strongly dependent on the hill shape, with a quite evident growth of the recirculation bubble size from model 2 to model 3. The comparison between the numerical and the experimental results shows a good agreement, being noteworthy, nevertheless, the larger size of the predicted
The size of the recirculation region for s1 was visualized by sticking wool tufts in the surface ofthe models, as well as in the bottom and lateral walls of the wind tunnel. The visualization of the flow obtained for a Reynolds number of 8x10^4 is schematically represented in Fig.4, where the lines depicted are a qualitative representation of the stream lines. The stream lines computed numerically for each hill configuration can be observed in this same figure. The values of the stream lines are not equally spaced, being selected to allow a good visualization of the main flow characteristics.
It can be observed in this figure how the size of the recirculating region is strongly dependent on the hill shape, with a quite evident growth of the recirculation bubble size from model 2 to model 3. The comparison between the numerical and the experimental results shows a good agreement, being noteworthy, nevertheless, the larger size of the predicted
结果的介绍
再通行区域的大小s1的通过黏附在模型的表面的羊毛一束形象化，并且在风洞的底下和外侧壁。 为8x10^4雷诺数获得的流程的形象化在Fig.4概要地代表，被描述的线是流线的一个定性表示法。 为每种小山配置数字上计算的流线在这个同样图可以被观察。 流线的价值不是等隔的，被选择允许主要流程特征的好形象化。
在这个图可以被观察重新传布的区域的大小怎么依靠强烈小山形状，与再通行泡影大小的相当显然成长从模型2的塑造3。 在数字和实验性结果之间的比较显示一份利益协定，是显著的，然而，被预言的再通行区域的更大的大小。 这差误很可能归结于在实验性设定的局限。 明确地，测试部分大概不是太久保证重新传布的区域的大小的独立与风洞出口的接近度的。
陈述结果
大小的回流区为S1的是可视化的坚持羊毛塔夫茨在物体表面之模式，以及在底部和侧壁的风洞。可视化的流程得到了一雷诺数8x10 ^ 4 schematically代表，在图4 ，凡线描绘的是一个定性的代表性流线。流线数值计算，为每希尔配置可以看出，在这方面的数字相同。价值流线，不也同样行距，被选中，让一个好的可视化的主要流动特性。
可以看出，在这个数字是如何大小的循环地区是强烈依赖于山的形状，具有非常明显的生产总值的增长率相再循环气泡的大小，从模型2模型3 。对比的数值和实验结果都表明，一个好的协议，值得注意的是，虽然如此，较大规模的预测回流区。这个差异是最有可能由于条件限制，在实验装置。更具体地说，试验段大概没有足够长，以确保独立之大小的回流区通过与邻近的风洞电源插座。