Timeline for Is my understanding of density/speed correct?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Jan 15 at 23:53 | comment | added | Wyatt | Also if you see the first answer in the link I provided in the question, you might be able to see where I'm coming from more (plus the link in my previous comment) | |
| Jan 15 at 16:10 | comment | added | Wyatt | @Chris oh okay. Could you read the 3rd paragraph of this answer to see why I thought density decreases with speed? You might see why I’m a little confused because of what the linked answer says. Thanks. | |
| Jan 15 at 14:58 | comment | added | Chris | @Wyatt No, it doesn't decrease whether a body is in the way or not. Density is a function of how many air molecules are in a given volume. Speeding air up has no effect on its density. | |
| Jan 15 at 14:29 | comment | added | Wyatt | Okay, thanks. Also what if there wasn’t a body or an object in the flow? It would still decrease density as it sped up, right? | |
| Jan 15 at 12:17 | comment | added | Charles Bretana | ... to add this answer, the ability of the particles to "get out of the way" is a function of their average molecular motion (think how fast they are moving around in the fluid from just bumping into one another, the motion due to their heat or temperature), and this remains the overriding determinant up to and until the aircraft true airspeed exceeds the average thermal velocity, (transonic, or about 0.92Mach), where shock waves begin to form. Shock waves are the result of the particles inability to "get out of the way" of particles bumping into them. | |
| Jan 15 at 6:47 | history | answered | Chris | CC BY-SA 4.0 |