Intermittent heat instabilities in an air plume

Le Mouël, Jean-Louis; Kossobokov, Vladimir G.; Perrier, Frederic; Morat, Pierre

doi:https://doi.org/10.5194/npg-23-319-2016

Articles | Volume 23, issue 4

https://doi.org/10.5194/npg-23-319-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Complex environmental and geophysical turbulence

https://doi.org/10.5194/npg-23-319-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 23, issue 4

Research article

|

30 Aug 2016

Research article |

| 30 Aug 2016

Intermittent heat instabilities in an air plume

Jean-Louis Le Mouël, Vladimir G. Kossobokov, Frederic Perrier, and Pierre Morat

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Month	HTML	PDF	XML	Total
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Jul 2016	11	4	1	16
Aug 2016	19	9	4	32
Sep 2016	42	12	0	54
Oct 2016	27	4	2	33
Nov 2016	10	5	0	15
Dec 2016	7	1	0	8
Jan 2017	14	3	0	17
Feb 2017	13	1	1	15
Mar 2017	34	11	5	50
Apr 2017	35	15	1	51
May 2017	28	8	1	37
Jun 2017	23	4	0	27
Jul 2017	16	14	1	31
Aug 2017	11	18	2	31
Sep 2017	8	10	0	18
Oct 2017	9	12	2	23
Nov 2017	12	16	0	28
Dec 2017	17	34	6	57
Jan 2018	23	34	10	67
Feb 2018	15	15	3	33
Mar 2018	17	26	3	46
Apr 2018	16	25	6	47
May 2018	13	28	3	44
Jun 2018	19	40	5	64
Jul 2018	16	23	4	43
Aug 2018	22	35	5	62
Sep 2018	12	27	3	42
Oct 2018	12	29	4	45
Nov 2018	23	29	2	54
Dec 2018	11	22	3	36
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Feb 2019	21	16	2	39
Mar 2019	13	29	4	46
Apr 2019	15	20	1	36
May 2019	9	28	4	41
Jun 2019	12	17	3	32
Jul 2019	16	24	3	43
Aug 2019	8	19	0	27
Sep 2019	9	17	0	26
Oct 2019	6	20	1	27
Nov 2019	13	19	1	33
Dec 2019	8	15	0	23
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Mar 2020	10	9	2	21
Apr 2020	9	8	2	19
May 2020	7	7	1	15
Jun 2020	23	12	1	36
Jul 2020	39	59	17	115
Aug 2020	2	9	3	14
Sep 2020	14	5	0	19
Oct 2020	6	12	0	18
Nov 2020	3	5	0	8
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Apr 2024	8	5	3	16
May 2024	5	10	2	17
Jun 2024	57	6	3	66
Jul 2024	19	5	0	24
Aug 2024	50	6	6	62
Sep 2024	24	12	3	39
Oct 2024	24	32	0	56
Nov 2024	8	11	0	19

Latest update: 23 Nov 2024

Short summary

Heating experiments carried out in a limestone quarry close to Paris have shown a classical shape of temperature distribution in steady-state plumes in averages over 24 h, along with rich dynamics of heat flow with intermittent trains of oscillations, spatially coherent, of large amplitudes and a ~ 400 s period, separated by relative quiescence whose duration can reach several hours. The observed behavior could be a universal feature of some turbulent plumes in real geophysical environments.