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1.Activating Sediment Modules

The Sediment Transport Module can be activated by right mouse click (RMC) on Modules in the Model Control (see Figure 1). 

EFDC_Explorer10.0 provides three options for setting up the sediment bed model :

  • Cohesive sediments
  • Non-cohesive sediments
  • SEDZLJ sediments

Various input parameters of Cohesive/Non-cohesive Sediment are described in the next section. 

Figure 1  Activate sediment modules.


2. Setting Sediment Modules

1.RMC on the Sediment and select Settings to see the dialogue box of Sediment Bed Properties.

 

Figure 2 Settings of sediment module.


2. Define the number of sediment bed layers, cohesive and non-cohesive sediments as shown in Major Settings shown in Figure 3

3. Set the options in the General tab for the Primary Computational Options and the Bed Shear Calculation Options as presented in Figure 3 .

Figure 3 Defining primary computational options 


4. In Cohesive tab users should enter the appropriate values for the relative parameters as well as defining the minimum and maximum values of Cohesive Fluids Concentration. Figure 4 shows an example.

Figure 4  Sediment bed model: Cohesives Tab.

5. In the Non-Cohesive Suspended Load tab, users can define the Equilibrium Concentration Option and enter the appropriate values for the relative parameters and non-cohesive layers.

Figure 5  Sediment bed model: NonCohesive Suspended Tab.

6. In the Non-cohesive Bed Load tab the user should click on Initialize Constants button and enter the number for the approaches desired e.g. enter "1" for the Van Rijn approach.

Figure 6  Sediment bed model: NonCohesive Bedload Tab.

7. In the Morphology & Consolidation tab users should click the Bed Morphology Options to allow bed changes. It is suggested to set the Max Layer Thickness and Constant Porosity to be the same values as in the input sediment file.

Figure 7  Sediment bed model: Morphology & Consolidation Tab.

 8.  In the Initial Conditions Tab: select the Sediment Initial Condition Options

 9.  Then, click Assign Bed IC and then browse for the input sediment file

10. Check Use sediment cores with grain size as shown in Figure 8

11. Define the maximum grain size for each size class relatively to cohesive and non-cohesive layers as displayed in Figure 8.

If the required information has been entered then the Apply is visible. After clicking on Apply, the sediment bed will be initialized.

Figure 8  Sediment bed model: Initial Conditions Tab.


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