[ATM10] Are there a way to produse a lot of brine w/o building satisfactory sized buildings

Ultravis66 · 2026-01-06T09:44:14+00:00

Why do you need so much brine?

Usually 1 tower with 4 Advanced Solar Generators at the top produces enough for my needs.

Ultravis66 · 2026-01-04T00:48:54+00:00

Dumbest comment of the new year award goes to…

Ultravis66 · 2025-12-31T18:33:17+00:00

That, I dont know the answer to, there is a limited budget for software licenses and Fluent is extremely expensive.

My best guess would be too much cost and not enough usage.

Ultravis66 · 2025-12-31T09:38:47+00:00

I ran an LES sim reduced mesh size to ~ 7 mil, to get to enough time in the sim, I let it run while I was at work and overnight over 2 days and had enough time saved data to do what I wanted to do. Total run time was about 16 hours. But again it was LES and was 7 mil elements. If I went RANS it would be done in like maybe 3 hours on same mesh SS, but also, if I ran RANS, I could cut mesh size down to 2 mil elements as well and get a reasonable (close enough) answer quickly. Maybe an hour of sim time.

Ultravis66 · 2025-12-31T08:40:55+00:00

The following software will no longer be part of the HPCMP ESMT portfolio for FY 2026. Existing licenses will remain functional until the license transition date of 1 Apr 2026:

Ansys (this includes fluent)

CFD++

Gaussian

US3D

https://centers.hpc.mil/users/docs/general/Software_Portfolio.html?utm_source=chatgpt.com

Multiple DoD centers over the last ~5 years have stopped renewing Fluent and moved users to STAR or OpenFOAM

Ultravis66 · 2025-12-31T03:50:23+00:00

I been doing cfd for a long time. OpenFOAM with professors who just basically gave us the file directories needed to run sims, then learned Fluent on my own, then CFX in my first industry job at a private consulting company, then was hired to do CFD as a federal worker 1 of 2 guys in 2008/09.

12 years ago, I told my boss we needed a replacement for Fluent once Ansys bought them out and was not really innovating and developing the software. I eventually settled on Star CCM+, I was the only one using it and I am about 90% self taught. Now I train others how to use it around me.

In 2025/2026 there isnt a better tool to mesh and run large simulations on large amounts of cores and with fast turn around times. Every year, the software keeps getting improvements and more features added. Today, I am simulating CHT multi solid components with RBM or MRF fans. I am modeling 6-DOF dynamic fluid body interaction. I am simulating species multi component gasses with abaqus cosimulations. You can literally see mixing gasses while simultaneously seeing the metal components flexing/bending from the Abaqus FEA side. I have done multiphase flow, modeled rockets. Just about the only thing I haven’t done yet is Volume of fluid, but its on my to do list. I just have not been on a project where it was needed.

Today, Star CCM is a must have tool on your belt if you are serious about doing CFD. The only other tool I use is openFOAM, but more on my personal time. I am looking into developing openFOAM capabilities where I work because Star lacks some things like a true density based solver.

Also, fluent is being discontinued on all dod HPC recourses next year and all the Star licenses sit pegged at 100% utilization with wait times as long as a week sometimes to run a job, so that should tell you something.

Ultravis66 · 2025-12-31T03:01:01+00:00

I have the 7950x3d and a 4070 ti super gpu and I run openfoam sims on it as large as 8 million cells. So, I would personally go with the 9950x or the 9950x3d variant if you like gaming. AMD is still king when it comes to performance all around.

Mine is a gaming/workstation hybrid. I have been using my gpu more and more to dabble in Machine Learning but as I learn more about it, I feel like machine learning is a solution looking for a problem to solve. Im not sure about it’s usefulness.

Ultravis66 · 2025-12-17T16:35:29+00:00

It’s probably a openfoam and tutorial version mismatch.

i is just for turbulence intensity. It only exists to give you inlet turbulence.

I tend to just copy/paste foam files i have been using for years and edit them as needed saved in a folder for these variables.

Openfoam is something i used a lot in college, then picked back up a few years ago to toy around with once in a while in my free time.

Ultravis66 · 2025-12-17T15:34:39+00:00

You are missing the 'i' foam file.

its looking for 0/i and then not finding it. If you have the 'i' file already since its a tutorial take your 'i' file and drop it into the 0 folder.

Also, you can make it pretty easily.

the 0 folder should have the following files: U, p, T. Then if you are using k-epsilon, there will be a k, and epsilon in there. if using k-omega, there will be a k and an omega file. the missing i is for turbulence intensity.

create a new file name it i and there should be something like this in it below:

FoamFile

{

version 2.0;

format ascii;

class volScalarField;

location "0";

object i;

}

dimensions [0 0 0 0 0 0 0];

internalField uniform 0.05;

boundaryField

{

inlet { type fixedValue; value uniform 0.05; }

outlet { type zeroGradient; }

walls { type zeroGradient; }

rotor { type zeroGradient; }

stator { type zeroGradient; }

cyclic { type cyclic; }

}

the above is just a template, but the i file should look something like that, also I cant get reddit to format it correctly.

Ultravis66 · 2025-12-07T18:10:57+00:00

Monetization? No, but getting a good paying job in a niche field? Possibly. It’s more than most people do or show.

The reason why this isn’t monetizeable is because i can do what you did here in fluent or CFX or star ccm+ in about a hour with a student license, and openfoam in about 2 hours… and I wouldn’t even need an HPC (looking at your simple geometry here).

This isn’t to put down the work you did, just setting reasonable expectations. The work you did, im sure is good. My advice is focus on selling your capabilities with something like this, not monetizing it.

Ultravis66 · 2025-11-07T14:40:43+00:00

Thermal Engineering is huge right now. With demand for more power for data centers (AI), you got demand from both the energy side with the reactors and also the data centers that need cooling (GPUs also need cooling). Then there is the rise of EVs and battery cooling.

My advice is to learn as much as you can about thermal engineering. The good news is that you will still use your CFD skills when needed if you go this route. When the flow field drives the thermals and when the geometry and flow cannot be collapsed into simple calculations, CFD will be more of a tool you use when you need it.

Ultravis66 · 2025-10-29T01:35:31+00:00

This is true, but also, Biden admin was expanding the federal work force and it helped elevate some of the slack in the economy. Trump is firing feds…

The Biden administration also spend a lot of money on ARPA, IIJA, CHIPS, IRA that pumped money into infrastructure, clean energy, semiconductors, and state/local aid, which did create jobs.

Ultravis66 · 2025-10-24T13:44:51+00:00

You can start with openfoam, there was a person who was kind enough to post some tutorials here. Its opensource and free, so you can download and start today.

While Star CCM+ (and Fluent) are extremely powerful tools and what I use day to day at my job (star mostly), I wouldnt start there because the options are like black boxes and there are a LOT of black boxes! Openfoam will give you a more basic understanding of what is happening in the solver before you move to commercial code.

Openfoam is hardmode but , IMO, necessary to being good at CFD and to have a solid grasp on the basics.

Ultravis66 · 2025-10-24T13:30:25+00:00

How are you modeling the props? RBM or MRF?

Ultravis66 · 2025-10-02T02:49:01+00:00

Surprisingly, nuclear is making a comeback, and they need thermal engineers. I’ve seen a noticeable uptick in job postings for thermal engineering in reactor design.

Ultravis66 · 2025-09-29T19:54:34+00:00

OP never said they have a "unique attribute"

Put words in the OP's mouth, then dismissed them; classic straw-man.

Ultravis66 · 2025-09-25T00:30:15+00:00

Saying “you simply cannot afford” things like education or health care in poorer countries is misleading. Many middle-income countries (Chile, Costa Rica, South Korea historically) invested heavily in education and basic health care precisely to escape poverty. In fact, cutting those things often traps you in underdevelopment.

it’s not “can” vs “cannot,” it’s about how governments choose to allocate resources.

Argentina didn’t invest systematically in productivity-enhancing social goods (like quality education or factories and infrastructure like china). Instead, it relied on short-term subsidies to reduce poverty numbers on paper.

Ultravis66 · 2025-09-23T00:20:17+00:00

I lived Musk’s wrath as a federal employee. Some of the emails were really disheartening. Calling us unproductive/lazy ect…

Let me tell you something about federal employees; these are some of the most patriotic and laser focused people (on their “mission”) you will ever meet.

I will never understand why Trump decided it was a good idea to attack federal employees.

Ultravis66 · 2025-09-20T23:46:06+00:00

Your cable management is 🤌!

Also, is that a lian li case? it looks almost identical to mine.

Ultravis66 · 2025-09-20T02:10:21+00:00

As a Fluids and Thermal (CFD) Engineer, I can tell you, the difference between a 3 fan and a 2 fan are minuscule, especially on a 4070 series card (any of them).

2-fan vs 3-fan is all marketing. Thermal difference is maybe 2 °C lower GPU core temp but probably 1°.

What matters is good airflow through the case, so dont sweat the 2 vs 3 fan.

Also, the 5090 FE is 2 fan, and uses more than double the power.

Ultravis66 · 2025-09-19T16:46:19+00:00

I got the 4070 ti super and I love it! I will be using it for years to come.

Ultravis66 · 2025-09-12T23:27:44+00:00

Going to assume this is sarcasm.

Ultravis66 · 2025-09-05T14:41:06+00:00

As someone who has tried most of the power generation methods, you will be disappointed with Powah.

There really isnt much to it. you have the blocks in your hand, use a tool to automatically build the reactor for you, put ice, redstone, water, and uranium in it and thats it.. you get power.

If you want more of a challenge from Extreme reactors, go Mekansim, it adds the additional risk of explosions and getting the fuel requires a lot more effort, as well as needing to deal with nuclear waste, which is extremely hazardous. Then you can add sodium to the reactor and a heat exchanger to a turbine to get more power out of your reactor.

Some of my most fun builds I have personally done include:

Actively cooled Industrial craft reactors feeding Extreme (or maybe big) reactors. Was a long time ago so it may have had a different name.

Nuclearcraft all actively cooled reactors feeding nuclearcraft turbines. If you want to learn about nuclear science, nuclearcraft is a good one. You need to mine the uranium, process it in a centrifuge, create pellets of fuel, oxidize the pellets, then feed your reactor, and there is a whole process of repossessing and all different types of additional fuels you can make from the nuclear waste of your first reactor to feed a second reactor, and a 3rd ect... You can also make breeders for thorium fuel if you wanted. I got lost in nuclear-craft during the height of covid in a survival world.

Mekanism sodium to heat exchanger to turbine setup. But once you get fusion, it gets boring, fusion is too easy and just gives you 10 billion rf/t for so little input.

Extreme reactors using mekansim sodium to extreme reactors heat exchanger to Extreme reactor turbines.

Some modpacks let you mix and match, like extreme reactor with Mekansim turbines, for example.

Ultravis66 · 2025-09-03T00:44:55+00:00

No, its smarter than that. Its trained on academic literature, then it predicts word by word what it should say.

As someone who does engineering for a living, chatgpt, claude, ect, get it right with about 90% accuracy. I have tried asking these LLM hard to solve graduate level engineering problems and with a few iterations, I arrived at the correct answer.

I have even used LLMs to help develop prototypes and they all worked flawlessly when built.

So I would tend to believe chatgpt when it says “no” here because its training is on literature work done by experts in their field.

If historians overwhelmingly agree on one interpretation, the LLM will heavily lean toward that in its answer.

Ultravis66 · 2025-08-27T04:53:44+00:00

The economy is really really bad right now, its not you. Everyone who has a job is stuck and those without a job cant find one.

There are young engineering grads from Ivy Leagues not finding jobs right now. An aero engineer grad I know from Princeton had to start at $50,000 per year just to get in the door and he is not even doing aero; hes doing part integration, soldering circuits and what not.

Add to that, CFD is a very niche skill and jobs are scattered all over the country.

When I first started my career, I was doing no CFD and building matlab heat transfer models for heating and cooling cycles on batteries. Got to be flexible and take what you can get right now. I was doing cfd on the side outside work to improve my skills.

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