When applying the cut-cell approach to create a mesh around a cylinder, I’ve noticed that the edges tend to appear non-smooth.
I found an article online (Hydrodynamics of gas–solids flow in a bubbling fluidized bed with immersed vertical U-tube banks) regarding simulations of a bubbling bed with vertical tube internals using MFIX, and from the images, it appears that some level of roughness is unavoidable.
Below is a mesh that I generated, and it looks even worse in terms of edge smoothness.
To improve the smoothness of the edges of a cylindrical internal component within the mesher, I would like to know which parameters should be adjusted. Are there specific settings or techniques recommended for achieving smoother edges with the cut-cell method? Any advice or experiences shared would be greatly appreciated.
Over the past few days, I’ve been grappling with the issue of achieving a smooth mesh at the edges of cylindrical geometries. Despite trying various approaches, I haven’t managed to significantly improve the smoothness as much as I’d like. One method that did provide some improvement was refining the mesh near the edges; however, this isn’t an ideal solution for me as it increases the overall number of elements in the mesh.
I’d like to know if anyone has alternative methods or parameter adjustments that could help achieve smoother edges without resorting to mesh refinement. Any insights, tips, or experiences you can share would be greatly appreciated!
This is a limitation of the cut cell method, sharp edges or geometric details that are smaller than the grid spacing cannot be resolved. Sometimes, moving grid lines near the edge of the cylinder using control points helps.
I have also noticed that achieving this with the cell-cut method seems to be quite challenging.
I see that you are one of the authors of the paper “Hydrodynamics of gas–solids flow in a bubbling fluidized bed with immersed vertical U-tube banks”. Could you please share how you managed to improve the mesh quality at the edges of the cylinders in your work? The mesh quality appears to be good from the screenshot provided.
Would it be possible for you to provide some recommended settings for the meshing parameters? Your insights would be greatly appreciated as they could help enhance the accuracy and efficiency of our simulations.
