Search found 117 matches

by paulo.chambel@hidromod.com
Fri Dec 03, 2004 17:01
Forum: MOHID GUI (discontinued)
Topic: Module Sand results
Replies: 1
Views: 6792

Module Sand results

When I run the Mohid system with the module sand (morphodynamics) the results by default are written in a file named sand_x.hdf. The problem is that because the extension is hdf and not hdf5 I do not have direct access to the results from inside the GUI. Can any one solve this problem?
Paulo
by paulo.chambel@hidromod.com
Fri Dec 03, 2004 12:48
Forum: MOHID GIS (discontinued)
Topic: Grid visualization error
Replies: 1
Views: 5902

Grid visualization error

Any one (Frank :D ) knows why some times I can not visualize the grids and when in the griddata matrixes I activite the option visualize grid nothing happens. I'm having this trouble with curvilinear grids. But I have already in other projects be able to visualize curvilinear grids. I do not know wh...
by paulo.chambel@hidromod.com
Thu Dec 02, 2004 19:31
Forum: MOHID Water
Topic: Water fluxes
Replies: 1
Views: 4471

Hello Nuno, you need to put the follow keyword in the hydrodynamic_x.dat file BOXFLUXES : D:\\Aplica\\Proj_262\\simula\\GeneralData\\FlowSections\\NewBoxes.dat your boxes definition file (NewBoxes.dat) should look like this : WRITE_BOXES : 1 TYPE : 1 OUTPUT_FILE : D:\\Aplica\\Proj_262\\simula\\Gener...
by paulo.chambel@hidromod.com
Thu Dec 02, 2004 19:27
Forum: MOHID Water
Topic: Time Serie Output of current intensity error
Replies: 1
Views: 2963

Time Serie Output of current intensity error

Hello Luís and Frank, Nuno detected an error in the time series of currents. Basically the error is due to the \"greed of computational efficiency\". There is a way that is very efficient from the computational point of view in fortran for calculating the modulus of a vector abs(cmplx(vx,vy)) Howeve...
by paulo.chambel@hidromod.com
Thu Dec 02, 2004 19:19
Forum: MOHID Water
Topic: More about surface fluxes
Replies: 5
Views: 12513

Silvia, in the Water Air interface module you specify the values along this interfrace but the decision of using them is taken in the waterproperties module. Basically you in water properties module input data (waterproperties_x.dat) you need to specify for each property if you want or not to impose...
by paulo.chambel@hidromod.com
Thu Dec 02, 2004 11:05
Forum: MOHID Water
Topic: More about surface fluxes
Replies: 5
Views: 12513

InterfaceWaterAir_x.dat RUGOSITY : 0.0025 OUTPUT_TIME : 0.0 3600 <begin_waverugosity> INITIALIZATION_METHOD : CONSTANT DEFAULTVALUE : 0.4 REMAIN_CONSTANT : 0 <end_waverugosity> <beginproperty> NAME : latent heat UNITS : W/m^2 DESCRIPTION : Calculated latent heat FILE_IN_TIME : NONE REMAIN_CONSTANT :...
by paulo.chambel@hidromod.com
Tue Nov 30, 2004 19:18
Forum: MOHID Water
Topic: More about surface fluxes
Replies: 5
Views: 12513

Silvia, the ideia is that in the atmosphere module you define the atmosphere properties at the sea level. In the module interfaceWaterAir you define the fluxes of heat and momentum between the water and the air. You can read all the fluxes from files (shear stress, latent heat, sensible heat, solar ...
by paulo.chambel@hidromod.com
Mon Nov 29, 2004 13:11
Forum: MOHID Water
Topic: horizontal diffusivity
Replies: 3
Views: 8655

For each property you can define a factor (= diffusivity / turbulent viscosity). So in the water properties file (waterproperties_x.dat) you can defined for each property this factor. By default this value is consider equal to 1. Horizontal diffusivity = Horizontal Viscosity * Factor Below is a exam...
by paulo.chambel@hidromod.com
Mon Nov 29, 2004 13:03
Forum: MOHID Water
Topic: Diffusivity coeficient
Replies: 2
Views: 5536

Dear Monica,
I anser this question in the subject Horizontal diffusivity.
Paulo
by paulo.chambel@hidromod.com
Mon Nov 29, 2004 11:01
Forum: MOHID Water
Topic: Cohesive sediments/ Lagrangian tracers
Replies: 18
Views: 14392

Hi, the user have two ways of computing bottom shear stress one linear and another non-linear. If the radiation stresses are added to the hydrodynamic model (hydrodynamic.dat - WAVE_STRESS : 1) the user is choosing the non-linear option (Bottom shear stress = (Cd(currents)*Vcurrents + Cd(waves) *Vwa...
by paulo.chambel@hidromod.com
Fri Nov 19, 2004 15:19
Forum: MOHID Water
Topic: Radiation stress
Replies: 1
Views: 3388

In Mohid is assumed a uniform profile for the radiation stress. However this is a simplification. If you are running a 3D model and you impose radiation stress (2D) the model assume automatically a uniforme profile for the radiation stresses.
Paulo
by paulo.chambel@hidromod.com
Wed Nov 17, 2004 15:04
Forum: MOHID Water
Topic: horizontal diffusivity
Replies: 3
Views: 8655

Dear Ismael, the Smagorinsky formulation basically computes the horizontal turbulent viscosity based in the velocity X and Velocity Y gradients. Horizontal turbulent viscosity = Horcon * dx * dy * SQRT(du/dx ** 2 + 0.5 * (dv/dx + dv/dy) **2 + dv/dy**2) Horcon - is a calibration parameter that theore...

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