I have just installed version 1.8 of OpenLB and tried running the nozzle3d and centrifugalPump3d examples, both did not run with the following.
terminate called after throwing an instance of 'std::runtime_error'
what(): STL File not valid.
I saw a similar question posted on this forum some while ago, and the problem there was that the stl file needed to be copied from a diffent example into the working folder. But I can not find such stl files for this case.
nozzle3d ran without an issue in 1.7
cylinder3d along with some other 2d examples I have tried ran without an issue.
I am new to OpenLB, sorry if this is a silly question.