Lead engineer of IL-2 Sturmovik joins MSFS team. Could mean further enhancements to MSFS flight model

I said the 20 KM CFD is coming in SU 11. That’s about 1.5 months away. It’s not in the current SU 10.

I believe thermals will be implemented in the 20 KM CFD, and other air movement. They showed a brief video on the 20 KM CFD in one of the past Twitch Q&As. Sorry I don’t have the link, but you can search the past Twitch Q&As if you really want to find more information about it. It was from a few months ago.

Edit: This isn’t the Twitch Q&A, but here is the quote from Seb from an interview on the upcoming 20 KM CFD:

Something we are currently working on that will not be for Sim Update 10: The problem with this system is that it works very locally and generates local thermals that don’t combine when they go up. The air that goes up somewhere else needs to go back down. It doesn’t create any vortices, turbulence on the side of thermals, anything like that yet. So there’s research work going on that took the CFD of the airplanes and expanded that 20-ish km around the plane. So that’s a really, very, very, very big CFD running and it goes pretty high as well. And we hope that sometime this year, we’ll to get that to simulate the airflows in the atmosphere to get nicer updrafts that can combine so that only bigger fields get updrafts when you go higher up, that you get vortices with air going back down, and all sorts of different local wind effects that we don’t really get from live weather. Live weather gives us wind gusts and direction, but it’s something a bit more for the area.

Excuse my stupidity - but what is a `“20km CFD”? :smiley:
Some kind of radius around the plane with highly accurate simulated airstreams?

Unless I’ve read things wrong, I believe they’re talking about a 20km circle around the player where the Computational Fluid Dynamics are applied - probably to do all the thermals and stuff for gliders, handle wind near mountains, etc.

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CFD is already in the sim, for some planes, but I have no idea what the diameter/area of that simulation is. Presumably very much local to the airframe.

Yeah, CFD came in in one of the Sim Updates during the spring, if my memory is correct. The 20 KM CFD around the plane is new though, I think it’s coming in SU 11.

Edit: This isn’t the Twitch Q&A, but here is the quote from Seb from an interview on the upcoming 20 KM CFD:

Something we are currently working on that will not be for Sim Update 10: The problem with this system is that it works very locally and generates local thermals that don’t combine when they go up. The air that goes up somewhere else needs to go back down. It doesn’t create any vortices, turbulence on the side of thermals, anything like that yet. So there’s research work going on that took the CFD of the airplanes and expanded that 20-ish km around the plane. So that’s a really, very, very, very big CFD running and it goes pretty high as well. And we hope that sometime this year, we’ll to get that to simulate the airflows in the atmosphere to get nicer updrafts that can combine so that only bigger fields get updrafts when you go higher up, that you get vortices with air going back down, and all sorts of different local wind effects that we don’t really get from live weather. Live weather gives us wind gusts and direction, but it’s something a bit more for the area.

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This will get me to try gliders. Up until now, they’ve been pretty pointless in all legacy sims IMO.