Modeling of Sediment Transport Upstream of Ghammas Barrage

PreparedAyam Jabbar Jihad

Asst. Prof. Dr. Kareem R.Abed

Supervised by:

Seminar No. 2

Review

• Define the borders of the study area

• Summation of data (Hydraulic data, Hydrology data, Geology data…..etc.)

• Make planning and suitable methodology

• Diagnose the problem in the study area

• Selected the region of study

• Make all required field measurements

Review

• Make the Numerical model

• Conclusion and Discussion

• Results

• Calculate the sediment concentrations

• Do all Laboratory works

• Selected the Region of Study

Euphrates river

Kifil

Shinafiya

• Make all required field measurements

Laboratory works

Make The Numerical model “ We are here now”

• Select the suitable Model it was:

SSIIM

Simulation of Sediment Movements In Water Intakes with Multi-block Option

The SSIIM program computes the water velocities and sediment transport in rivers , channels and reservoirs

Theoretical basis of Model SSIIM

Control volume method

Navier-Stokes

equations

k-Ԑ turbulence

model

3D structured non –

orthogonal grid

Convection-diffusion eq. for sed. transport

Inputs

Structural Model

Steps to create the numerical model:

1. Generation of grid for reach study.

2. Generation of input files for the CFD model.

3. Computing water flow filed using SSIIM CFD model.

4. Computing the sediment concentration.

5. Comparison of resulting concentration with the measurements.

The grid : making the grid is often the most time consuming process in the preparation of input data for SSIIM. The general idea is divided the water body into cells, and then solve an equation for each cell.

First stage Generation of grid for reach study

GridEditor

outflow

Inflow

Ghammas barrage

Flo

w d

irect

ion

prototype image

The numerical model of study region(top view)

Inserting cross sections. Koordina file

051015202530354045505560657075.5

00.51

1.52

2.53

3.5

cross section no. 1

distance (m)

elev

ation

(m)

Section no. 1

Topography of the reach by the model in 3D view.

Thank you