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advard,moitoi,horse 等大虾,小弟有事相求。

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发表于 2002-7-19 18:36:25 | 显示全部楼层 |阅读模式

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第一次接触PHOENICS,痛苦的按照帮助学,现在遇到一点小问题
我按照PHENICS的帮助作了一个室内气流模拟。
图画好了,网格也划分了(这一项我弄不太清楚)。但就是看不到运行结果。
运行的步骤是按照下面的提示作的:
Running the Solver.
In the PHOENICS-VR environment, click on 'Run', then 'Earth' and 'yes' when prompted to save data to files.
Using the VR Viewer.
In the PHOENICS-VR environment, click on 'Run' then 'VR Viewer', and view the velocity vectors, contours and isosurfaces.
但我按了‘VR VIEWER’以后, 看不到结果,恳请大家帮忙。

还有下面这一段设置让人莫名其妙
Set the grid:
Click on the 'Mesh toggle' button. The default mesh (shown as orange lines) will appear on the screen. Click anywhere on the image, and the ‘Gridmesh settings’ dialog box will appear. Change the Grid Dimension to 20 cells in X and 15 cells in Z.
Click on ‘Modify region’ for Z, and enter 1.
Click on ‘Cell’ for Z and enter 6.
Click on ‘Modify region’ for Z, and enter 2.
Click on ‘Cell’ for Z and enter 3.
Click on ‘Modify region’ for Z, and enter 3.
Click on ‘Cell’ for Z and enter 15.
Click on ‘Power/ratio’ for Z, and enter 2.
Click on Symmetric for Z and toggle to Yes
Click on ‘Modify region’ for Z, and enter 4.
Click on ‘Cell’ for Z and enter 3.
Click on ‘Modify region’ for Z, and enter 5.
Click on ‘Cell’ for Z and enter 6.
Click on ‘OK’ to close the dialog box.
The mesh will now be shown as blue and orange lines. The orange lines are ‘regions’, defined by the bounding boxes of the objects. Click on ‘Mesh toggle’ again to turn off the mesh display.

Set the remaining solution control parameters:
Click on ‘Main Menu’, then on click on Numerics and enter 200 in the ‘Total number of iterations’ dialogue box.

Click on ‘Relaxation Control’ and enter the false time steps DTFALS:
U1  1.0
W1  1.0
Click on ‘Previous Panel’/‘Top Menu’ and ‘OK’.

发表于 2002-7-19 21:07:36 | 显示全部楼层

advard,moitoi,horse 等大虾,小弟有事相求。

看来你遇到的是网格设置的问题。在划分网格的时候,程序本身根据domain下你设的objict的多少自动划分了区域(region),在每个区域可以划分疏密程度不同的网格,当然你也可以设成均匀的。power/ratio表示的是每个region中的网格是不是均匀的,默认值1表示均匀的。关于呢的为什么不运行,呢最好说的详细一点。
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