Why the nodes are not in a line?
 

As illustrated in the attached picture. Why the nodes of the the outer layer are not in the line with the inner ones? Thank you very much.Attachment 43596

I produce the mesh with Pointwise, but I think similar problem may occur to other software too, such as ICEM

Sorry, I cannot make any sense of the image you posted. There is too much "other stuff".

Can you please post a less cluttered image that hides the irrelevant entities?

Hi,

In your picture, your "outer layer" has a break point where the two adjacent connectors are joined at a node. The "inner layer" which you depict has a single continuous connector in this region. At the break point for the "outer layer", there are spacing constraints set at this node which doesn't exist on the continuous "inner layer" connector. As a result you see that the spacing between grid points for the two layers becomes inconsistent.

You can correct this in one of two ways. You can split the connector on the "inner layer" at the same perpendicular location as the "outer layer" by selecting the "inner layer" connector, selecting Split.. from the Edit menu, and then selecting the node on the "outer layer" and clicking your mouse. Once you have split the connectors, you will want to ensure that each connector on the inner layer has the same number of grid points as their opposites on the "outer layer". Next you will want to set the initial grid spacing to be the same on each side of the node for both nodes.

Alternatively, rather than splitting the "inner layer" connector, you can manually insert a break point, by selecting the "inner layer" connector, and selecting Distribute... from the Grid menu. Navigate to the Break Points tab within the Distribute panel, and you can add a control point manually similarly to how you would split a connector. Then, you can use the spacing mask in the toolbar to set the spacing values on each side of this control point to be the same as the spacing values on each side of the node in the "outer layer". This may not be the best approach if the inconsistency in the grid point spacing is so severe that the number of grid points on each side of the break point is different than the number of grid points on each connector of the "outer layer". If that is the case, then the first approach of splitting the connector is probably best.

I hope this helps explain why you're seeing the inconsistency in grid point spacing between both layers, and provides some options for you to fix it.

Best Regards,


Zach