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@disla great idea about using contact on the fan model. i'll give that a try. on the a400m model, i haven't looked at the custom cards in ages. i'll go over them again and see if anything is missing. if you can post the cards you think it should hav…
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no, what i'm referring to is the mecway cyc sym bc popup window. i attached a pic. where it says All you want to clear that out and enter the number 1. above that you enter the number of blades. I'm confused on your end goal. Just be careful. I'm no…
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I'm sorry that you can't get the solver up and running. That stinks. Cyclic symmetry works easily, as long as the mesh is small. If you only output one sector it helps a lot with memory and speed. It defaults to All. You have to manually switch that…
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@disla no problem. the small hole issue that you found, i addressed in this update. so it now has a small hole through the center. on the whole rotor model of that example, i did everything i could to help netgen. however, it still does not mesh it …
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hi @hooshsim the animation @disla showed is from a model I sent him. it's one of two old test models that i made a long time ago. i have been re-running them since you're post about full disk modes. i just finished remeshing and solving one of the…
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@disla sadly, i'm totally lost on what your original goal is. one thing i can say as far as the nodal diameters repeating. it seems to depend on the model. if there is a flexible hub then the mode frequencies are not the same as the nodal diamete…
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hi @disla, yeah, i don't know about your original post. i was commenting on @JohnM reply. however, i requested 6 modes and there are 7 blades. so that works out to 24 final modes (due to nodal diameters). in a different thread you mentioned just o…
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I ran the same test model with just outputting 1 sector and it dramatically speeds up the cyc sym analysis. So all the slow down and high memory seems to be relegated to trying to view the whole rotor. here is a comparison of the same model. the onl…
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hi @JohnM that's interesting, thanks for sharing. my experience was a lot easier. we only did one blade as a shell model. we were mainly looking for the first 3 modes. 1st flat wise, 1st torsional, and 1st edgewise. We also looked at the 2nd of ea…
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hi @disla i can send you links to models but i've got everything worked out on my end. it's @hooshsim who is having issues. i don't want to confuse this thread up any more than it is, lol.
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couple of different things going on in the thread. for @victor and @disla @hooshsim can't use cyclic symmetry because his geometry isn't cyclic symmetric. so he has to do a full rotor. i'm not sure why he is getting no results at this point. it's…
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I'm stumped. not sure what's going on. you can try uninstalling and reinstalling mecway. it won't affect all the customization you did yesterday. but I'm really not sure.
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hi hooshsim, there are still some variables missing. the omp_num_threads is the most important one that i see. just make sure you get them all in there. as far as no results, i can't say for sure. i would def do some test models first though. i ju…
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I was talking to Victor about the ccx i4 vs i8 thing and he brought up an interesting point. I think most CPUs have 64bit bus widths. So you could fit twice the integers per clock with i4. If you have AVX-512, it's architecture dependent implementat…
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hi disla, from what i can tell, the cyclic symmetry seems fine. where i'm having problems is trying to match a full rotor's results to the cyclic results. there doesn't seem to be a way to do that. i end up just modeling one blade because that give…
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from what i saw of your error message details, it looks like you might have a problem with the contact setup. if you can try a simple model with just one part and fixed constraint, it might help. the environment windows are for windows. they change…
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i don't think the mods i was talking about have anything to do with the internal solver. you should run the test cases using the ccx solver. i seldom use the internal solver. i found it's much better than ccx for harmonic analysis. so if you are doi…
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hi, that's great. you are getting much closer. unfortunately, you have to manually copy the needed mkl files and put them in the folder. you can also use environment path variables. i used to do it that way. however, i find having the files in the …
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yeah. i'm not sure what the ccx.exe file is. maybe from mecway's install. you definitely shouldn't mess with the mecway folder though. if you have been writing over files or adding files etc... you could end up having to uninstall it and reinstall i…
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It may be some confusion as to the folder you put the files in. You're pic shows the Mecway folder. You should pick a different folder, ideally not there. Make sure to move out any files you added there. I plotted my test times and I was surprised …
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desktop development with c++. however, it looks like it's no longer necessary to go through everything I mentioned. just the oneapi mkl might be enough. without visual studio or any intel compilers. see my last couple of posts. not sure why it's dif…
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interesting. so i tried testing some things and it seems to work differently than previous tests. now it doesn't seem like you need to make a copy of mkl_rt.2.dll and name it mkl_rt.1.dll it also doesn't seem like you need the libiomp5md.dll (which…
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hi hooshim, the best i can tell it looks like you were on the right path when you had everything unchecked but intel oneapi mkl. however, as mentioned: 1) install microsoft visual studio first (not needed for intel mkl but is needed for any of th…
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hi hooshim, it looks like you checked to install gpu acceleration. try uninstalling the oneapi first. possibly reboot next. then resinstall. on the options, uncheck everything. then just select the MKL option. you also have to select at least one c…
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ugh. forgot something else. i actually have an installation notes file. i've attached it.
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hi hooshsim, one last thing that i forgot. you want to make sure you setup certain windows system environment variables. i attached a picture of my settings. the pastix mixed precision is an important one. setting it to 0 turns off their novel fea…
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I should probably add a few things. To get an idea if you can solve your model, I attached a picture with my solving experience. I can solve 1 million nodes with 16 GB of memory. I can go up to about 2 million nodes sometimes. If I go over 3 million…
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Cyclic symmetry with Mecway and CCX is terrible. So you aren't missing anything. Solving large models is also a problem. The software just isn't as advanced as the big boys. To save yourself a lot of headaches I would recommend using ANSYS or some o…
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Not sure if this is what you are experiencing. However, a long time ago, I noticed Netgen yields different meshes based on where the part is located. I brought this up to Victor. As far as I know, that bug still exists.
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hi, i also have this issue. however, it's not limited to modal analysis. i also get it with nonlinear static using ccx and the pardiso solver. i have 16gb of memory and can solve between 1-2 million nodes, before going out of core. i try to keep th…
