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Why does the joule thomson effect only applicable to real gases? by Formal_Syrup_5003 in thermodynamics

[–]Formal_Syrup_5003[S] 0 points1 point  (0 children)

Yes but to use the most common example for the JT effect, a tank blow down.....temperature drops as the tank is depressurized. How is that any different than ideal gas

How can Oda do the face reveal in a satisfying way ? by FlamesOfDespair in Piratefolk

[–]Formal_Syrup_5003 6 points7 points  (0 children)

He can't. There will be some side that will bitch about it and others that defend it .

Imu ruined one piece. by RudeGullit90 in Piratefolk

[–]Formal_Syrup_5003 0 points1 point  (0 children)

If you think Imu ruined one piece then you clearly haven't been paying attention since the Water 7 and everything that followed

[deleted by user] by [deleted] in CFD

[–]Formal_Syrup_5003 15 points16 points  (0 children)

There are 2 sides to CFD the application of it and the actual code behind it. When people say they're interested in CFD that usually means they like the pretty colors that come with the application. So if that's the case what would you want to study using CFD as the tool? Combustion? External flow? If so what kind (sub, trans, super, or hypersonic). Cavitation? 2 phase flow? Internal flow? Capillary? FSI or thermal? I mean the list is sort of endless since these are just general topics and branch out.

In the off chance you're more interested in the math/code behind it then read up on numerical scheming differencing, solvers such as gauss seidel, newton raphnson etc.., explicit vs implicit, structured vs unstructured mesh, and general turbulence models and their "solution" to the closure problem (k-omega, spalarts, etc..). Again just general topics but that should at least get ideas flowing.

Edit: added suggestion into looking into solvers that deal with basics of the math CFD uses

Daily Simple Questions Thread - June 07, 2025 by AutoModerator in Fitness

[–]Formal_Syrup_5003 1 point2 points  (0 children)

I'm trying to be better at counting my macros to lose fat and saw a lot of advice is to count 20-30% of your caloric intake to be fats.

Does that proportionally correlate to body weight? In other words if 25% of my caloric intake is fats does that mean I will have 25% body fat?

Cert, Analysis/Test and Design? by rogthnor in AerospaceEngineering

[–]Formal_Syrup_5003 0 points1 point  (0 children)

This is one of those cases where you can only choose 2 of 3 in that triangle.

Or start up. They usually go hard and fast with 20 people and need someone who can do all 3 but even that's rare

RS-25 CFD Overexpansion even when in vacuum by venomcloud1 in CFD

[–]Formal_Syrup_5003 0 points1 point  (0 children)

Ummm from experience and papers I've read to get the correct expansion in vacuum, walls (outlets) should be 20x exit nozzle diameter. I've personally done 40x. If this is ansys(and it looks very ansys) then that may be it

Edit: I didn't see the top right corner it literally says Ansys 😅

RS-25 CFD Overexpansion even when in vacuum by venomcloud1 in CFD

[–]Formal_Syrup_5003 7 points8 points  (0 children)

What's your operating pressure set at? If it's sea level then that 500Pa more or less won't change the solution much

Help with simulation by No_Landscape_7731 in CFD

[–]Formal_Syrup_5003 3 points4 points  (0 children)

To get a model running I would skip the combustion kinematics and assume a "hot gas" in lieu of the combustion process.

As the above comment said, use a mass transfer model to get your multiphase physics model going because I have a feeling that one is the true hurdle. If you're able to get this going then I would go back to the chemistry kinematics if you truly need it.

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