5 minutes ago, blingthinger said:

Also, it's technically not driven by CFD. It's driven by Meteoblue's weather model. The CFD is nothing without the boundary conditions extracted from the global model. Though it's true that the forecasts they are using are most likely CFD-based (e.g. if it came from NOAA), that would mean competitor sims are using CFD too. 

Augmented/enhanced by CFD is more accurate.

You're getting too caught up in semantics and adjectives here... Yes by "driven" I meant the calculations of the atmospheric airflow are using CFD, akin to their aircraft CFD math as described in https://docs.flightsimulator.com/flighting/html/Developer_Mode/Aircraft_Editor/Debug/Debug_Aircraft_CFD.htm

2 minutes ago, lwt1971 said:

You're getting too caught up in semantics and adjectives here

Credit where credit is due. Sorry to hear that you treat language accuracy lightly. Would not have guessed that. Anything else is marketing hot air.

When it comes to technical details, it makes all the difference in the world.

13 minutes ago, lwt1971 said:

Well you seem to have insights into the MS/Asobo marketing department that I don't. To be honest, I could care less about XP and the usual stuff XP fans parrot about NASA and whatever else 🙂 ... this is the MSFS forum, and we're discussing atmospheric airflow CFD so don't want to devolve this into a sim vs sim back-and-forth. If some in this MSFS forum feel that the great technologies coming out of Asobo in the aerodynamics space are "advanced" so be it, no need to feel insecure about how XP compares to it.
 

Perfect response to that.

47 minutes ago, lwt1971 said:

Well it obviously is the case that great FMs can be developed without local-aircraft-CFD (the aircrafts I cited like the Fenix A320, Milviz C310, PMDG 737 are good examples)... I am just interested to hear from aircraft developers like simbol (of FSReborn) on their experience in using CFD for their birds.

JustFlight are not using CFD on their upcoming PA-38.  Two problems were noted last summer...not by me, but by the devs:  1) CFD isn't fully documented at that time, and 2) CFD only used a cylinder for fuselage, and any protrusions like a cabin etc. could not be simulated.    And the PA-38 has a big cabin sticking up there.

They have also created a FM that spins like a Tomahawk is supposed to spin, without using CFD.  To me that is the most important thing with a PA-38 FM -- getting it to spin like the real one.  Well, that and the T-tail simulation, with elevator coming on late and suddenly.

Did FSReborn use CFD with the Sting?  I think it is being used but I can't remember.

Just now, blingthinger said:

Credit where credit is due. Sorry to hear that you treat language accuracy lightly. Would not have guessed that. Anything else is marketing hot air.

No it doesn't mean I treat language accuracy "lightly" lol.. what it does mean is that I used the word "driven" to mean the underlying calculations and technology in this new atmospheric airflow simulation, which happened to differ from your interpretation of "driven". Given that word has fairly broad usage in the English language, such different interpretations are natural, until context is given isn't it 🙂

And sounds like it comforts you to deem all this as "marketing hot air", so stay comforted (frankly that's exactly what I'd expect certain kinds of XP fans to do 🙂)
 

3 minutes ago, Mace said:

Did FSReborn use CFD with the Sting?  I think it is being used but I can't remember.

Yup the S4 uses local aircraft CFD, that's why I'd love to hear from @simbol .. Also, see this list someone is maintaining in the offical forums of all aircrafts using CFD, the new prop physics that came in SU8, softbody physics, etc: https://forums.flightsimulator.com/t/new-propeller-cfd-soft-body-simulation-airplane-list/504719

7 minutes ago, lwt1971 said:

what it does mean is that I used the word "driven" to mean the underlying calculations and technology in this new atmospheric airflow simulation

Good to know you were being vague. And no, there are not various definitions for 'driven' in a numerical algorithm/technical context. 

CFD is not the foundation here. Meteoblue's weather model is the ultimate driver. Updrafts are driven by cloud location, ground texture color, and winds aloft predictions. CFD is driven by ground geometry and air boundary conditions.

Your broad statement that CFD is driving the new weather is misleading. Even "helping to drive" would be more accurate.

25 minutes ago, lwt1971 said:

Yup the S4 uses local aircraft CFD, that's why I'd love to hear from @simbol .. Also, see this list someone is maintaining in the offical forums of all aircrafts using CFD, the new prop physics that came in SU8, softbody physics, etc: https://forums.flightsimulator.com/t/new-propeller-cfd-soft-body-simulation-airplane-list/504719

Ah, so you DO want to discuss FM CFD! Me too!

11 minutes ago, blingthinger said:

Good to know you were being vague. And no, there are not various definitions for 'driven' in a numerical algorithm/technical context. 

CFD is not the foundation here. Meteoblue's weather model is the ultimate driver. Updrafts are driven by cloud location, ground texture color, and winds aloft predictions. CFD is driven by ground geometry and air boundary conditions.

Your broad statement that CFD is driving the new weather is misleading. Even "helping to drive" would be more accurate.

Once again, and try to read this more slowly: I was conveying that the new atmospheric airflow simulation and how its implemented and calculated, is "driven" by CFD, which it is (I didn't say the new weather is being driven by CFD, or whatever else you seem to be dreaming up) ... CFD is obviously the centerpiece for this new feature coming in SU11 as Asobo's Seb and other devs have said on the Q&As (curiously this somehow seems to irk you, and the only solution I can offer for that is maybe don't be so fixated on MSFS?). And yes obviously Meteoblue's weather model and other atmospheric factors are inputs to this system, but that's besides the point.
 

20 minutes ago, blingthinger said:

Ah, so you DO want to discuss FM CFD! Me too!

That's fantastic, and I never said I didn't want to discuss FM CFD. Try to stick to what's actually said vs imagining stuff 🙂

21 minutes ago, lwt1971 said:

And yes obviously Meteoblue's weather model and other atmospheric factors are inputs to this system

Now you're understanding it! And better than I explained it. Inputs are drivers. Not the other way around. The airflow simulation is going to be there regardless of the presence of CFD. The CFD is adding some bumps and wiggles at low altitudes. CFD is not driving the airflow model.

1 minute ago, blingthinger said:

Now you're understanding it! And better than I explained it. Inputs are drivers. Not the other way around. The airflow simulation is going to be there regardless of the presence of CFD. The CFD is adding some bumps and wiggles at low altitudes. CFD is not driving the airflow model.

It is time for you to stop embarrassing yourself.

1 minute ago, blingthinger said:

Now you're understanding it! And better than I explained it. Inputs are drivers. Not the other way around. The airflow simulation is going to be there regardless of the presence of CFD. The CFD is adding some bumps and wiggles at low altitudes. CFD is not driving the airflow model.

Here's a clue: I already understood what I said before, because well, I said it 🙂.. good that you're somewhat getting it now, but keep working at it! Here's another clue, the word "driven" can be used to convey various things... i.e. For the 20km CFD airflow visualization and modelling in SU11, CFD is driving the calculations of it. Hope that doesn't confuse you more though!, isn't English fun?
 

1 hour ago, lwt1971 said:

the word "driven" can be used to convey various things

Not in the engineering/scientific world. Not even a little bit.

For a marketing department and video game community, sure, I see your need for cloudy fuzziness.

Regardless though, the new weather, as adjusted by the CFD model, is pretty cool.

 

 

2 hours ago, Krakin said:

It is time for you to stop embarrassing yourself.

Nothing intelligent to contribute? Be less lazy!

Edited November 7, 20223 yr by blingthinger

In a word, yes.