Again, just for fun. There are 7 tubes in the bundle.

  • The geometry looks like the follows ↓

<img>05

<img>06

The software is ANSYS ICEM. The mesh consists of pure hexahedral grids.

  • 01 ↓

<img>01

  • 02 ↓

<img>02

  • 03 ↓

<img>03

  • 04, blocking ↓

<img>04