Hydraulic conductivity unit

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a346
Posts: 16
Joined: Wed Nov 15, 2017 3:40 pm

Hydraulic conductivity unit

Postby a346 » Wed Feb 19, 2020 3:01 pm

Hey,

Using DBMananger 4.4.4., I would like to change the hydraulic conductivity for the soil "sand". I am confused about the unit "m/s*10**-6". What does that mean? The value I would like to input is 4.9421E-5.

Can someone help me out?

Tim
Posts: 1401
Joined: Mon May 15, 2017 3:46 pm

Re: Hydraulic conductivity unit

Postby Tim » Wed Feb 19, 2020 3:07 pm

Hi,

Well 10**-6 is like E-6, so your value would be 49.421E-6.

Best regards,
Tim

a346
Posts: 16
Joined: Wed Nov 15, 2017 3:40 pm

Re: Hydraulic conductivity unit

Postby a346 » Wed Feb 19, 2020 5:00 pm

Thx, I was wondering about two **

mrv
Posts: 2
Joined: Tue Mar 24, 2020 4:58 pm

Re: Hydraulic conductivity unit

Postby mrv » Fri May 22, 2020 7:20 am

Hi Envi-met Team,

I have 2 questions while I have been creating the database for my own living wall.

-For a simulation where living wall simulation is performed, does the 'heat conductivity' value of substrate used according to the situation where substrate humidity is 0% or is it based on the 'water coefficient' value which is the main determinant of the humidity of the wall? In other words, does a constant heat conductivity value or a varying one depending on its moisture content used for the substrate?

-How does the 'hydraulic conductivity' is handled in the calculations?

Thank u very much,
Merve.

Tim
Posts: 1401
Joined: Mon May 15, 2017 3:46 pm

Re: Hydraulic conductivity unit

Postby Tim » Fri May 22, 2020 8:27 am

Hi Merve,

If you enter a heat conductivity for your soil, that value is used for the simulation. If you enter 0, the heat conductivity is calculated by matrix potential with actual water content, water content at saturation and b-coefficient. It would then depend on moisture content of the substrate.

Hydraulic conductivity value is not used for greening substrates.

Best regards,
Tim


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