Timeline for What is the difference between thermal conductivity and thermal diffusivity?
Current License: CC BY-SA 4.0
17 events
| when toggle format | what | by | license | comment | |
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| S Nov 15, 2021 at 18:06 | history | bounty ended | CommunityBot | ||
| S Nov 15, 2021 at 18:06 | history | notice removed | CommunityBot | ||
| Nov 8, 2021 at 17:39 | comment | added | Bob D | It’s more important to understand the relevant applications of k and $\alpha$. If you are interested in the use of $\alpha$ in the Fourier heat equation I gave keep in mind that equation only applies to conduction. It doesn’t account for the heat transfer by convection that occurs in liquids and gases | |
| Nov 8, 2021 at 17:22 | comment | added | Harshit Rajput | Higher thermal conductivity does not always mean higher diffusivity. For solids lower the k, lower the $\alpha$. However, in fluids a lower k doesn't necessarily mean a lower $\alpha$. This makes me conclude that k and $\alpha$ are telling two completely different things. I want to know what are these things. I know, the ques is too cluttered and unclear as I also mentioned at the beginning of the ques, I'm having a hard time finding the loophole in my understanding, but if you could explain just the difference between k and alpha by taking any of your example, that would be enough too. | |
| Nov 8, 2021 at 16:24 | comment | added | Bob D | Regarding your edit, it's not clear to me what explanation you are looking for regarding the difference between k and $\alpha$ in the case of liquids and gases. | |
| Nov 8, 2021 at 6:35 | history | edited | Harshit Rajput | CC BY-SA 4.0 |
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| Nov 7, 2021 at 20:46 | comment | added | Bob D | Frankly, it seems to me I answered your question as it was, and still is, framed since it clearly implies an interest in solids ( re: your example of two rods). Now, as an afterthought, you're thinking about liquids and gases. At a minimum you should edit your question to clarify what it is now that you are asking. | |
| Nov 7, 2021 at 20:25 | comment | added | Harshit Rajput | Actually I feel like there is still something missing. Comparing water and air for eg, even though water has a higher conductivity than air it has a lower diffusivity than air. I acknowledge your answer was for solids only, but I feel an explanation which is valid for every material would be worth knowing. So I started a bounty even. | |
| Nov 7, 2021 at 19:58 | comment | added | Bob D | Can you please tell me why you unaccepted my answer? | |
| S Nov 7, 2021 at 16:57 | history | bounty started | Harshit Rajput | ||
| S Nov 7, 2021 at 16:57 | history | notice added | Harshit Rajput | Canonical answer required | |
| Nov 7, 2021 at 15:52 | history | edited | Harshit Rajput | CC BY-SA 4.0 |
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| Nov 3, 2021 at 18:40 | vote | accept | Harshit Rajput | ||
| Nov 7, 2021 at 16:57 | |||||
| Nov 3, 2021 at 17:51 | answer | added | Steeven | timeline score: 2 | |
| Nov 3, 2021 at 17:21 | answer | added | Bob D | timeline score: 1 | |
| Nov 3, 2021 at 14:10 | answer | added | Chet Miller | timeline score: 2 | |
| Nov 3, 2021 at 12:55 | history | asked | Harshit Rajput | CC BY-SA 4.0 |