tube with 45 degree inlet
 

hello all,

I made ​​the mesh for this geometry, but I am getting negative values ​​of angle and determinant :confused:.
1 - I created a block to the main cylinder, then made ​​two cuts near the side inlet, I associate the edges with the inlet and outlet tube
2 - I extruded the block side entrance with a line and point and extruding block association with inlet inclined at 45 degrees.
3 - I drew the Ogrid at the entrance angle to the opposite wall of the tube (diameter) and another ogrid along the main pipe. For the main Ogrid, I chose the inner block crossing between the two Ogrid.
4 - I realize the division of volumes in the edges.

how do I make the distribution of blocks? , which would be the best topology?

Best regards.

Attachment 7559

Attachment 7560

Attachment 7562

maybe you can split block like this.

Hi hook,

Can you please upload your block file here.

Hi hook,

thank you very much for your time and response. I want to understand what you make. :)
You made ​​three splits at the side entrance, associated with the two semi-ovals in different blocks. Ogrig Fianalmente you defined with the demi-oval block smaller.

Could you upload the archibo block?

Thanks in advance;);)

Hi germang,

The curve at the side entrance is better captured with an additional split there ( Look into the image sideentrance.jpg) and then you dont need to have two seperate O- grids ( As said in your 3rd step). Select all the blocks and the faces through which the O- grid has to pass ( Look into the image FacesforO-grid.jpg).

Before making the O- grids go to edit associations and snap project all the vertices .When you're done with the O- grids adjust some inner O-grid vertices where ever required. This will yield you a better mesh and shall eliminate the negative quality elements. pre mesh smoothing can improve the quality further.

Hope this helps!