Hello Peter,nnI have followed your video instructions. I have solved the 2D problem in two different Lengths. The problem solved successfully when I used a half inch pipe with a length of 2000mm. However, when i tried to solve the same problem with same mesh setting changing the length to 6000mm. There seems to be problem with meshing.nI have uploaded the screenshots. The first screenshot shows the design of 2D model without meshing. Where it looks fine.nnnAfter using the default program controlled meshing or the mesh settings suggested in your video, the design seems to transform into a different shape as shown in the below figure. nnis this issue caused due to the poor meshing ?.Thank you in advance.n