Discharge file

MOHID Water forum. Questions and discussion around MOHID Water
renanbribeiro@yahoo.com.br
MOHID User
Posts: 26
Joined: Thu Jan 01, 1970 00:00
Location: Universidade Santa Cecília - Santos, Brazil

Discharge file

Postby renanbribeiro@yahoo.com.br » Tue Oct 06, 2009 21:42

Dear Mohid users,


I am with a doubt about the input of values of properties in the Discharge.dat file. When I do not place a property (ex. oxygen) in the discharge file, which the concentration of discharge of this property? It seems to be zero...


Thanks,
Renan Ribeiro

CampuzanoFJ
MOHID User
Posts: 47
Joined: Thu Jan 01, 1970 00:00

Postby CampuzanoFJ » Tue Oct 20, 2009 15:26

Dear Renan,

When you want to discharge a property you have to add the keyword

DISCHARGES : 1

in the corresponding property in the waterproperties file, in the case you add this keyword you´ll be asked to add in the discharges file with an error. In the case you don´t add it then you are not influencing the property with the discharge. Best regards,

Francisco

vborges@eptisa.com
MOHID Beginner
Posts: 4
Joined: Thu Jan 01, 1970 00:00

discharge direction

Postby vborges@eptisa.com » Fri Oct 23, 2009 12:40

Hi,
Using the previous post here's a weird question. If you have a fairly flat bathymetry how does the model knows which direction (or which neighboring cell) a river discharge should go?
In my case, i noticed that it's sending the discharge outside the domain.

Thanks
Vasco

CampuzanoFJ
MOHID User
Posts: 47
Joined: Thu Jan 01, 1970 00:00

Postby CampuzanoFJ » Fri Oct 23, 2009 18:21

Dear Vasco,

Basically, when you input a discharge in the model, what you are doing is adding a quantity of water on top of that cell. In the case they are rivers or water discharges they will be forced by the land boundary. Hope this helps you to understand how the module discharges work. Best regards,

Francisco

renanbribeiro@yahoo.com.br
MOHID User
Posts: 26
Joined: Thu Jan 01, 1970 00:00
Location: Universidade Santa Cecília - Santos, Brazil

Postby renanbribeiro@yahoo.com.br » Fri Oct 30, 2009 20:04

Dear Francisco,

Thanks for the answer. But I am still with a doubt.
The keyword DISCHARGE is ok (with 1) , in the waterproperty.dat.

In the discharge.dat file I have some discharges with an oxygen input, but others without the oxygen input (only with the input of others properties salinity, temperature,...). My question is, what will be the value of oxygen for the discharge that dosen't have this property?

My discharge file:

<begindischarge>
NAME : Quilombo
DESCRIPTION : Discharge of Quilombo River
I_CELL : 142
J_CELL : 92
K_CELL : 1
ALTERNATIVE_LOCATIONS : 0
DATA_BASE_FILE : ..\\..\\GeneralData\\Discharges\\Quilombo.txt
FLOW_COLUMN : 2

<<beginproperty>>
NAME : salinity
UNITS : psu
DESCRIPTION : salinity in santos
DEFAULTVALUE : 0.5
<<endproperty>>


<<beginproperty>>
NAME : cohesive sediment
UNITS : mg/l
DESCRIPTION : Coehsive Sediment discharge from Quilombo river
TIME_SERIE_COLUMN : 3
<<endproperty>>


<<beginproperty>>
NAME : temperature
UNITS : mg/l
DESCRIPTION : temperature discharge
TIME_SERIE_COLUMN : 4
<<endproperty>>

<enddischarge>

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Discharges data file. DO NOT EDIT

<begindischarge>
NAME : Jurubatuba
DESCRIPTION : Discharge of Jurubatuba River
I_CELL : 132
J_CELL : 114
K_CELL : 1
ALTERNATIVE_LOCATIONS : 0
DATA_BASE_FILE : ..\\..\\GeneralData\\Discharges\\Jurubatuba.txt
FLOW_COLUMN : 2

<<beginproperty>>
NAME : salinity
UNITS : psu
DESCRIPTION : salinity in santos
DEFAULTVALUE : 0.5
<<endproperty>>

<<beginproperty>>
NAME : cohesive sediment
UNITS : mg/l
DESCRIPTION : Coehsive Sediment discharge from Jurubatuba river
TIME_SERIE_COLUMN : 3
<<endproperty>>


<<beginproperty>>
NAME : temperature
UNITS : C
DESCRIPTION : temperature discharge
TIME_SERIE_COLUMN : 4
<<endproperty>>

<<beginproperty>>
NAME : oxygen
UNITS : mg/l
DESCRIPTION : oxygen discharge
TIME_SERIE_COLUMN : 5
<<endproperty>>

<<beginproperty>>
...

<enddischarge>


Thanks again,

Renan

angela.maretec@ist.utl.pt
MOHID Beginner
Posts: 3
Joined: Thu Jan 01, 1970 00:00
Location: Oporto

Re: Discharge file

Postby angela.maretec@ist.utl.pt » Wed Nov 04, 2009 17:27

Hi Renan,

The discharge will only apply for the properties specified in the specific discharge block.

Your presented first discharge, Quilombo, does not have oxygen specified as property, hence it will not affect oxygen property (specified in Waterproperties#.dat) in any way.

But Jurubatuba discharge will affect oxygen because it has a oxygen property block.

Hope this helps.

Best regards,

Angela


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