Hi @tdijkstra: I suggest you ‘fix’ the standard mesh (TET) first:
In Advanced setting , please define ‘Small features suppression’: in your case, it can be around 1 mm, but you can play with.
Without that, you well have enormous mesh ‘aspect ratios’, which, im my opinion, could break or bias simulation results. Aspect ratio should be checked after mesh generation in mesh log file:
volumeRatio
min: 1
max: 34954.23629327407
average: 1.5486799722615263
standard deviation 55.56276440660423
median: 1.2189308202415277
0-th percentile: 1
20-th percentile: 1.0319025396584673
40-th percentile: 1.1425157883165176
60-th percentile: 1.3175424311148078
80-th percentile: 1.5256157525109562
100-th percentile: 34954.23629327407
tetAspectRatio
min: 1.0000503472711673
max: 10859.151443709372
average: 1.6894976629197729
standard deviation 34.576864107226115
median: 1.5021191691541866
0-th percentile: 1.0000503472711673
20-th percentile: 1.2938008529218694
40-th percentile: 1.4373863833592888
60-th percentile: 1.5547845818671844
80-th percentile: 1.686455293976037
100-th percentile: 10859.151443709372