Timeline for Why aren't all irreversible processes isobaric?
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 29, 2022 at 19:43 | vote | accept | Boson | ||
| Jun 29, 2022 at 17:06 | answer | added | Bob D | timeline score: 1 | |
| Jun 29, 2022 at 7:19 | comment | added | Miyase | I know this sort of graph, but it's technically wrong unless there's a quasi-static assumption. Without this assumption, pressure $P$ is undefined during the process, so the graph is meaningless. With this assumption, $P$ is defined. Almost automatically, you can add a mechanic equilibrium assumption, so $P=P_\text{ext}$. If your graph is in this case, then yes $P$ is constant, so $P_\text{ext}$ is constant too. But it's completely unrelated to the fact that it's irreversible. | |
| Jun 29, 2022 at 7:01 | comment | added | Boson | Also, what would be the graphs for irreversible isochoric, isothermal and adiabatic? Would they differ from reversible graphs?Could you write an answer based on this? | |
| Jun 29, 2022 at 7:00 | comment | added | Boson | @Miyase Ok. so is the above graph only for isobaric irreversible process? | |
| Jun 29, 2022 at 6:55 | comment | added | Miyase | @Boson This is incorrect. That a process is irreversible says nothing about $P_\text{ext}$, it only tells you than the created entropy term is strictly positive. There's no relation between the two. | |
| Jun 29, 2022 at 2:49 | history | edited | Boson | CC BY-SA 4.0 |
added 1 character in body
|
| Jun 29, 2022 at 2:25 | comment | added | Boson | @BobD Because Pext is constant in all irreversible processes(afaik) which is the condition to be an isobaric process. | |
| Jun 28, 2022 at 21:29 | comment | added | Bob D | "Why aren't all irreversible processes isobaric?" Why would you think that all irreversible processes are isobaric? I intend to to post an answer, but first I need to know why you would think that. | |
| Jun 28, 2022 at 17:15 | history | edited | Qmechanic♦ |
edited tags
|
|
| Jun 28, 2022 at 17:13 | history | edited | Boson | CC BY-SA 4.0 |
added 2 characters in body
|
| Jun 28, 2022 at 17:13 | history | edited | Boson | CC BY-SA 4.0 |
added 108 characters in body
|
| S Jun 28, 2022 at 17:11 | review | First questions | |||
| Jun 28, 2022 at 19:16 | |||||
| S Jun 28, 2022 at 17:11 | history | asked | Boson | CC BY-SA 4.0 |