u/imitation_squash_pro

▲ 3 r/CFD

Tips on converting a mesh in Fluent to OpenFOAM and handling "shared edge" patches?

I converted the fluent mesh using fluent3DMeshtoFoam . It worked well. But when I do a checkMesh I see a patch called "multiply connected (shared edge)". See below:

Patch Faces Points Surface topology
zone:1:1 8103 16206 ok (non-closed singly connected)
top_surface 4266 8532 ok (non-closed singly connected)
side_surface 10126 20217 ok (non-closed singly connected)
bottom_surface 3667 7326 ok (non-closed singly connected)
zone:1_1 1452 1427 multiply connected (shared edge)

This patch corresponds to a place where the mesh has coindicent mesh with another volume. Is there a way to delete this patch without having to delete it in Fluent? Or can I tell openfoam to make this patch internal and let fluid flow between it?

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▲ 6 r/fea

How do you prove the value of simulation to upper management?

It seems in every simulation job there is a constant struggle to prove the value of simulation to the top brass. They obviously want to cut costs and see $$ savings from each project.

But simulation does not really work that way. Many times simulation just confirms what people already know. Or sometimes simulation is looking way down the road where value is hard to predict..

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▲ 2 r/HPC

How to delete slurm output and error files from within the slurm script?

I often have to submit a job many times over and over again. Each time I need to delete the previous run's output files as below. If I include that in my slurm script it will delete the current job's output/error files which I don't want.

[me]$ rm *.out *.err

[me]$ sbatch slurm.sh 

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u/imitation_squash_pro — 2 days ago

What is the logic behind "meeting at police station" to sell something?

Everybody walks around in public with a high value cell phone and a wallet. Yet nobody cares about having some "police presence" surrounding them wherever they go? So why the double standard when selling some low value item?

Sellers do this because they are trying to hide flaws in the item and don't want to stand behind what they sell.

Only once in 30 years have I bought something from someone who wanted to meet at some random place. It turns out the item had undisclosed flaws . Never again!

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u/imitation_squash_pro — 7 days ago
▲ 10 r/CFD

Can CfdOF create coincident mesh between adjacent edges/surfaces/volumes?

I've defined this green circular surface to be my inlet. But when I go to mesh it , snappyhexmesh doesn't put nodes on the boundary of that inlet.

However, the simulation runs correctly in OpenFoam. So despite there not being element nodes on that circumference, it somehow knows how to apply my inlet velocity correctly.

My end goal is to mesh internal volumes with coincident elements . My workaround is using toposet to define internal volume elements. BUt I get strange results at the boundary of my toposet. Presumably because no element nodes exist on those boundaries. In other words "toposet" is slicing through elements resulting in strange contour plots on that slice.

u/imitation_squash_pro — 8 days ago
▲ 6 r/LIRR

How long does a city ticket stay active for?

Guessing it is 30 minutes? Want to see if I can do a round trip on the same ticket since I just need to do something quick at my destination and return back.

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u/imitation_squash_pro — 13 days ago
▲ 42 r/FreeCAD

Padding ~2000 holes is taking 5-10 minutes

I made the holes using linear arrays then mirroring them twice. Guessing it's the nature of the beast or any workaround?

u/imitation_squash_pro — 14 days ago

Sometimes I have to stand for 15 minutes till someone comes to take my package . Then I have to divulge my email address or phone number. Another time wasting and intrusive process.

I get it's not a priority for them since they are not making money from it. BUt why not just let us drop it off in a pile?? WHy make things so difficult?

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u/imitation_squash_pro — 14 days ago

Sometimes I have to stand for 15 minutes till someone comes to take my package . Then I have to divulge my email address or phone number. Another time wasting and intrusive process.

I get it's not a priority for them since they are not making money from it. BUt why not just let us drop it off in a pile?? WHy make things so difficult?

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u/imitation_squash_pro — 14 days ago
▲ 3 r/SLURM

Trying to avoid doing a restart of the slurmctld. I read that "scontrol reconfigure" should accomplish the same thing. I tried it on the master node, but seems it is still using the older job_submit.lua file. Here is that file and none of the "got here's" seem to work:

function slurm_job_submit(job_desc, part_list, submit_uid)
    slurm.log_user( 'got here' )
    if job_desc.wckey == nil then
--        slurm.log_user("You should specify a project number")
        slurm.log_user( 'got here' )
    elsif _find_in_str(job_desc.wckey, "12345") then
        slurm.log_user("12345 matched")
    else slurm.log_user( job_desc.wckey )
--        return ESLURM_INVALID_ACCOUNT
    end
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u/imitation_squash_pro — 16 days ago
▲ 1 r/ADP

Can't tell it is a phishing email or legit. The button to confirm goes to some "...awstrack.me" site. The email says you can also confirm by logging into the website . I did that but do not see anywhere under "my profile" to confirm my address..

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u/imitation_squash_pro — 16 days ago

Thinking to ask 10 or $20 on my local Facebook marketplace. But maybe they're some highly sought after vintage model? Or will I have trouble finding people to take them for free?

u/imitation_squash_pro — 19 days ago

It​ used to work fine the first year I had t​hese glasses. But seems now it is ​ hit or miss whether it's going to work or not. The audio won't come through the headset. If I restart my phone and the glasses then it will work for maybe 10 minutes before the audio goes out. The video camera seems to work though with the WhatsApp.

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u/imitation_squash_pro — 20 days ago
▲ 7 r/OMNY

Per the website it says $35. But all the advertising says you have to pay for 12 rides which would be $36.

u/imitation_squash_pro — 20 days ago

I want the gray cylinder to have cutouts where the green part is. Tried several times, but guessing I am doing this wrong.

u/imitation_squash_pro — 21 days ago
▲ 6 r/CFD

I notice regardless if inlet is small or large, the CFD shows the same transition length for fully developed flow ( ~ 0.2 m in this 1 m long pipe ). But the hand calculations using 0.06* Re * pipe_diameter show larger number ( ~1m ).

For Re I am using the equation based on the inlet diameter. Is that correct? Or should it be pipe diameter?

u/imitation_squash_pro — 21 days ago

My office in midtown gives us $25 daily credit on seamless. I like to find places that have some kind of deal where I can order two entrees for an out of pocket cost of under $10 . But it's time consuming to find such places. Some places offer $8 off $25 order. Some places offer extra discount if you order after 1PM. Any way to better search for these kind of deals? Or is it just trial and error?

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u/imitation_squash_pro — 21 days ago

I rotated the body 45 degrees successfully. But when I try and sketch on the top plane it defaults to the original coordinate system for the sketch ( pic #2 ).

u/imitation_squash_pro — 22 days ago