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Old 05-30-2024, 02:37 PM   #11 (permalink)
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This video is about rockets, not cars, so at 19 minutes the discussion turns to ITAR restrictions and the ad.



I question the reset time and discrete steps in the test runs, but what do I know? It does show adaptive subdivision of the test cells.

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Old 05-30-2024, 06:59 PM   #12 (permalink)
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Listening to Autoline After Hours, they are saying that prototyping has largely shifted to simulation, whereas before there would be hundreds of physical prototypes to test the many different design variations of a thing.

Reminded me of how Jordan Peterson conceives of the imagination and predictive power of the mind. He says that we play out scenarios in our minds so that the bad ideas can die rather than playing them out in real life, and suffering the consequences. Our minds are uniquely capable of running simulations to optimize behavior.
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Old 05-30-2024, 08:58 PM   #13 (permalink)
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Quote:
He says that we play out scenarios in our minds...
I always taken by the fact that in a dream you can turn around and look down a street and all the buildings are there, right down to the flower pots on the windowsills. It's much like AI hallucinations.

It's much deeper than you propose. Quantum Mechanics has dissolved particles into waves of information fields. It's a weird world where the future changes the past. I recommend:

Space Time and Beyond, by Bob Toben and Fred Alan Wolf. I bought and read it in [apparently] 1983. Sarfatti has just resurfaced with a new presentation.

His explanation on an iPad is not nearly as good as Bob Toben's cartoons.
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Old 06-03-2024, 10:23 AM   #14 (permalink)
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' rockets '

There's nothing there that would inform us about road vehicle aerodynamics.
A completely different animal.
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Old 06-03-2024, 10:35 AM   #15 (permalink)
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' prototyping '

Quote:
Originally Posted by redpoint5 View Post
Listening to Autoline After Hours, they are saying that prototyping has largely shifted to simulation, whereas before there would be hundreds of physical prototypes to test the many different design variations of a thing.

Reminded me of how Jordan Peterson conceives of the imagination and predictive power of the mind. He says that we play out scenarios in our minds so that the bad ideas can die rather than playing them out in real life, and suffering the consequences. Our minds are uniquely capable of running simulations to optimize behavior.
Looking at the big dogs, you'll see them using tools like:
CATIA 3D modeling
SIEMENS NX (CAD ) digital analysis, digital prototyping, digital simulation
SIEMENS Parasolid geometric modeling kernal
Python
ANSA
SIEMENS STAR-CCM+
STEP
IGES
EXA POWERFLOW
UG-NX
Alias
Polyworks
ANSYS Fluent
ANSYS Tgrid
XFOIL
InDesign
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Old 06-03-2024, 01:19 PM   #16 (permalink)
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Do you know what each of those tools do? I recognize Python and IGES as standards (employed in Blender) and Autodesk Alias and Adobe Indesign as competitive software products. At least somewhat, Indesign is page layout software.

I know naught about Seimens and Ansys, but Wikipedia says Ansys Fluent was acquired in 2006 for $299 million. I doubt it has iterated as much as Blender since 2006.

The 'big dogs' have vendor lock-in and institutional inertia.
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Old 06-04-2024, 09:26 AM   #17 (permalink)
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The big boys also have the reputation of good working software for use by someone who wants to get it really close the first time and doesn't sweat the price tag as much as John Doe at home. If you can convince the beancounters that you will make money with it..........

I'm not sure it's lock in as much as these are the known issues and this is how we fix them. Unknown knowns are expensive
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Old 06-06-2024, 11:00 AM   #18 (permalink)
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' know '

Quote:
Originally Posted by freebeard View Post
Do you know what each of those tools do? I recognize Python and IGES as standards (employed in Blender) and Autodesk Alias and Adobe Indesign as competitive software products. At least somewhat, Indesign is page layout software.

I know naught about Seimens and Ansys, but Wikipedia says Ansys Fluent was acquired in 2006 for $299 million. I doubt it has iterated as much as Blender since 2006.

The 'big dogs' have vendor lock-in and institutional inertia.
If it will ever stop storming around here, and I can get months of outdoor work behind me, I'm going to visit the Dean of the Engineering Park, connected with UNT, and see about a nickel tour of their 'Fluids' apparatus.
Their 'textbook' is now is 'online' only. More recent fluids texts I perused in New Mexico over the Thanksgiving holiday had nothing to offer over my text from the 1970s.
There's no wind tunnel that I know of.
UNT 'is' tied into the multi-million $ Dell super-computer at UT Austin, which is shared between about eight university campuses in Texas.
The school should provide all the extant hardware and AUTOCAD-CAM, CFD software to provide students a segway into the state-of-the-art for contemporary industry needs.
'George Soros' found me through 'leftist' channels, and is going to underwrite
some road vehicle aerodynamic research of my choosing. So I need to know what UNT's capabilities are, and see what kind of 'tool kit' they might offer to someone offering grants.
I can't answer your question until then.
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Old 06-06-2024, 01:39 PM   #19 (permalink)
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Quote:
'George Soros' found me through 'leftist' channels, and is going to underwrite
some road vehicle aerodynamic research of my choosing.
I fear for your soul.

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