# aed water heating

**URL:** <https://opentelemac.org/forum/t/aed-water-heating/8153>\
**Category:** WAQTEL / AED2\
**Created:** [August 2, 2026, 7:29am UTC](https://opentelemac.org/forum/t/aed-water-heating/8153 "2026-08-02T07:29:27Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![user\_15804](https://opentelemac.org/forum/letter_avatar_proxy/v4/letter/u/e9bcb4/32.png) [@user\_15804](https://opentelemac.org/forum/u/user_15804)\
**Post date:** [August 2, 2026, 7:29am UTC](https://opentelemac.org/forum/t/aed-water-heating/8153/1 "2026-08-02T07:29:27Z")

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Hi,

I’m running [name removed] coupled with AED v1.2 + salinity and temperature.

I’ve disabled any atmospheric exchange, but for some reason the water temperature keeps increasing at a constant rate during the simulation. In contrast, the salinity seems fine.

I kept the ACCURACY FOR DIFFUSION OF TRACERS : 1.E-15 to make sure it’s not some numerical issue.

Could there be some mix-up in the coupling tracer list?

any idea would be welcome,

thank you !

[aed-2.zip](https://opentelemac.org/forum/uploads/short-url/7xIVe3hy8IGrSm57Vpe4pZOyG0U.zip) (555 KB)

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<div class="post-metadata">

**Author:** ![user\_438](https://opentelemac.org/forum/letter_avatar_proxy/v4/letter/u/c77e96/32.png) [@user\_438](https://opentelemac.org/forum/u/user_438)\
**Post date:** [August 2, 2026, 5:24pm UTC](https://opentelemac.org/forum/t/aed-water-heating/8153/2 "2026-08-02T17:24:11Z")

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Hello,

If you activate the coupling between TELEMAC-3D and AED2 (WATER QUALITY PROCESS = 13 in the TELEMAC-3D steering file), water/atmosphere exchange are taken into account. I do not understand what you mean by “I’ve disabled any atmospheric exchange”.

[name removed]

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<div class="post-metadata">

**Author:** ![user\_15804](https://opentelemac.org/forum/letter_avatar_proxy/v4/letter/u/e9bcb4/32.png) [@user\_15804](https://opentelemac.org/forum/u/user_15804)\
**Post date:** [August 3, 2026, 4:51am UTC](https://opentelemac.org/forum/t/aed-water-heating/8153/3 "2026-08-03T04:51:50Z")

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Hi [name removed],

I meant it in the sense that I did not include an atmospheric data file.

Is there a default solar flux that applies instead?

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<div class="post-metadata">

**Author:** ![user\_438](https://opentelemac.org/forum/letter_avatar_proxy/v4/letter/u/c77e96/32.png) [@user\_438](https://opentelemac.org/forum/u/user_438)\
**Post date:** [August 3, 2026, 9:33am UTC](https://opentelemac.org/forum/t/aed-water-heating/8153/4 "2026-08-03T09:33:43Z")

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Hello,

Indeed, default values are applied to atmospheric data, see keywords:

- WIND VELOCITY ALONG X = WIND VELOCITY ALONG Y = 0 m/s,

- AIR TEMPERATURE = 20 degrees C,

- VALUE OF ATMOSPHERIC PRESSURE = 100,000 Pa,

- RELATIVE HUMIDITY = 50 %,

- CLOUD COVER = 5 octas,

- RAIN OR EVAPORATION IN MM PER DAY = 0 mm,

- SOLAR RADIATION = 160 W/m2.

If you really want to deactivate water/air exchange but keep AED2 coupling, you have to modify Fortran files (e.g. comment the calls to CALCS3D\_THERMICS in bord3d.f + what you want in calcs3d\_aed2.F).

Hope this helps,

[name removed]

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<div class="post-metadata">

**Author:** ![user\_15804](https://opentelemac.org/forum/letter_avatar_proxy/v4/letter/u/e9bcb4/32.png) [@user\_15804](https://opentelemac.org/forum/u/user_15804)\
**Post date:** [August 5, 2026, 5:59am UTC](https://opentelemac.org/forum/t/aed-water-heating/8153/5 "2026-08-05T05:59:32Z")

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that did the trick,

THank you!

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<div class="post-metadata">

**Author:** ![user\_15804](https://opentelemac.org/forum/letter_avatar_proxy/v4/letter/u/e9bcb4/32.png) [@user\_15804](https://opentelemac.org/forum/u/user_15804)\
**Post date:** [August 13, 2026, 5:47am UTC](https://opentelemac.org/forum/t/aed-water-heating/8153/6 "2026-08-13T05:47:16Z")

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quick followup,

I also have salinity in the simulation, which, without activating AED, causes stratification. But it seems that when I activate aed, there’s no change in density.

I successfully ran the same setup with [name removed] eutro where the density was handled in Telemac3D by adding these lines to my t3d.cas file:

NUMBER OF TRACERS = 2

NAMES OF TRACERS : 'TEMPERATURE C ';

‘SALINITY G/L’

DENSITY LAW = 3

When I try to do the same with AED, I get a segmentation fault error:

Backtrace for this error:

DEALLOCATING AND REALLOCATING %R OF TEMPAE 3227 1 1

I notice that the density calculation is commented out in calcs3d\_aed2.F (not my own edit).

Is there another way to have Telemac3D handle the density calculation when running with AED?