MOHID Water forum. Questions and discussion around MOHID Water
MOHID Beginner
Posts: 3
Joined: Sun May 19, 2013 15:09


Postby » Tue Nov 26, 2013 02:44

Hi there
I am just starting with MOHID modeling software. So I am trying to run a simple hydrodynamic module, but it crashes always

After created or activated the Hydrodynamic module, I did activate all related modules, such as Water properties, interface water air, interface sediment water, setting default values for all of them...
Additionally, I have created a bathymetry constant grid file using MOHID GIS, and I have prepared a tides.dat file with M2 harmonic values

I mean, I think I have done all the procedure but my simulation still crashes

After generating some steps, a message comes like this:

Running MOHID, please wait…
70 164 1
density, temperature, salinity
NaN -1363.659 -1909.123

ModifyDensity - MOduleWaterProperties - ERR04

I have checked all the parameters, but I don't know what am I doing wrong

Please can anyone give me a hand?
I will really appreciate

Looking forward

MOHID Beginner
Posts: 9
Joined: Thu Mar 29, 2012 15:06

Re: Beginner

Postby » Mon Dec 02, 2013 11:17

Hi, I'm Conchi

Did you solve this problem? if so, could you tell me how did you do? I think your case is similar to it happens to me when I'm running Mohid en 3D baroclinic.

Thanks advanced

Posts: 24
Joined: Thu Apr 19, 2012 18:48

Re: Beginner

Postby » Thu Dec 12, 2013 11:14

Hello mrobelly,
I presume that you are working with a 3D model, because you activated the option BAROCLINIC:1. I believe that the model calculates the density (that depends on Temperature and Salinity) and it goes unstable.

I recommend you to start a simple model, choosing BAROCLINIC:0 (sometimes high velocities occurs and instabilize that properties) . After you checked this, we could see if it is dued to a inconsistency between input data or the way you defined Geometry.dat (vertical discretization).

I recommend you to look into samples files at

MOHID Beginner
Posts: 3
Joined: Sun May 19, 2013 15:09

Re: Beginner

Postby » Fri Dec 13, 2013 17:56

Hi Conchi… I have not tried to solve this problem yet, but I am afraid the problem is due to the input data… As Mellissa said
MOHID Beginner
Posts: 3
Joined: Sun May 19, 2013 15:09

Re: Beginner

Postby » Fri Dec 13, 2013 17:58

Dear Melissa, Thanks for your help
One more question… If I just wanna run 2D, instead of 3D… do I have to set 1 layer within Geometry module???

Thanks in advance

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