![Schematic of a normal shockwave boundary layer interaction that creates a local separation bubble. [850x593 - 72KB]](https://pic8.co/sh/cmCXW3.png){kind=link}
Shocking discovery.
Shocking discovery.
The implications that can be exploited are interesting. Sonic choking happens in very narrow passages, CFD often shows a sharp pressure spike, followed by a trailing low pressure zone.
If your CFD is akshully gud, you see fine little details like this everywhere in your model. Particularly where two curved surfaces are close to each other.
If you see shit like this in your CFD, or wind tunnel testing/anal cyst, unless you carefully create an expansion downstream, you're gonna get lots of turbulence with your flow acceleration, when you get to a certain speed. If your expansion is carefully constructed the flow will accelerate further reducing pressure, AAAAAND much fewer flow instabilities.
The implications that can be exploited are interesting. Sonic choking happens in very narrow passages, CFD often shows a sharp pressure spike, followed by a trailing low pressure zone.
https://agupubs.onlinelibrary.wiley.com/cms/asset/a2e358b4-c360-465d-9607-9161d9abb71c/jgrb53406-fig-0009-m.jpg
If your CFD is akshully gud, you see fine little details like this everywhere in your model. Particularly where two curved surfaces are close to each other.
If you see shit like this in your CFD, or wind tunnel testing/anal cyst, unless you carefully create an expansion downstream, you're gonna get lots of turbulence with your flow acceleration, when you get to a certain speed. If your expansion is carefully constructed the flow will accelerate further reducing pressure, AAAAAND much fewer flow instabilities.
(post is archived)