Timeline for How can flows of gases at low Mach number have approximately constant density despite varying pressure?
Current License: CC BY-SA 4.0
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| when toggle format | what | by | license | comment | |
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| Sep 5, 2023 at 17:58 | answer | added | AK1987 | timeline score: 1 | |
| Sep 5, 2023 at 6:48 | answer | added | user268745 | timeline score: 0 | |
| Aug 19, 2023 at 23:24 | comment | added | user268745 | Thank you, @ChetMiller. No, I wouldn't consider a 1% difference significant. I thought the Venturi meter showed a significant pressure differential. I guess I should try out some numbers: Let's say that the wider part of the flow is 10 cm/second. Let's assume a 5x flow tube diameter reduction => 25x cross section area reduction => 625x increase in velocity squared. Half the difference in squared velocity is 31.2 m^2/s^2. Multiplying that by the density of air, 1.2 kg/m^3, gives a pressure difference of 0.000374 bar. I see, that is small. :-) | |
| Aug 19, 2023 at 10:57 | comment | added | Chet Miller | Suppose that, on the right, the pressure is 1 bar, and on the left, it is 0.99 bars. Do you think that the effect of the change in density is significant? | |
| Aug 19, 2023 at 2:02 | history | edited | Michael Seifert | CC BY-SA 4.0 |
Added tags, changed Wiki link to main site
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| S Aug 19, 2023 at 1:33 | review | First questions | |||
| Aug 19, 2023 at 2:02 | |||||
| S Aug 19, 2023 at 1:33 | history | asked | user268745 | CC BY-SA 4.0 |