Telemac modeling in the izmir bay
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TELEMAC MODELING in the IZMIR BAY. by DEU-SUMER Water Resources Management Research and Application Center Izmir, Turkey. TRANSFER OF GEOSPATIAL DATA. Geospatial Base Data Water Depths Isolines Sea-Land Border Derived DEM. Geospatial Data transferred into SX file format.

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TELEMAC MODELING in the IZMIR BAY

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Telemac modeling in the izmir bay

TELEMAC MODELINGin the IZMIR BAY

by

DEU-SUMER

Water Resources Management Research and Application Center

Izmir, Turkey


Telemac modeling in the izmir bay

TRANSFER OF GEOSPATIAL DATA

  • Geospatial Base Data

  • Water Depths

  • Isolines

  • Sea-Land Border

  • Derived DEM

Geospatial Data transferred into SX file format


Telemac modeling in the izmir bay

GENERATION OF ELEVATION MODEL (MESH)

DEM

Mesh with boundaries

Mesh


Telemac modeling in the izmir bay

REGENERATING THE MESH FOR EASY COMPUTING

Based on bathimetry Considering a derived criterion

Number of Nodes

25,292 nodes 4701 nodes


Telemac modeling in the izmir bay

BOUNDARIES OF THE CONTROL VOLUME/AREA

Boundaries: Deep Sea (liquid boundary) River Outlet (liquid boundary) Coastline & islands (solid boundaries)

Deep Sea (Aegean Sea)

Gediz River Outlet


Telemac modeling in the izmir bay

CALIBRATION DATA SET (EXAMPLES)

Control Point 1:

Long: 26.78 Lat: 38.57

X: 480835 Y: 4269080 (UTM-35)

For the period of 23-30.09.1994

At 10m. depth

Max. Velocity : 10.50 cm/sec

Avg. Velocity : 3.93 cm/sec (0.0393m/sec)

At 25m. Depth

Max. Velocity : 9.60 cm/sec

Avg. Velocity : 3.55 cm/sec (0.0355m/sec)

Average

~0.2m/sec

Output to Excel in .num format


Telemac modeling in the izmir bay

CALIBRATION DATA SET (EXAMPLES)

Control Point 2:

Long: 26.68 Lat: 38.52

X: 472104 Y: 4263560 (UTM-35)

For the period of 23-30.09.1994

At 10m. depth

Max. Velocity : 11.40 cm/sec

Avg. Velocity : 6.30 cm/sec (0.060m/sec)

At 25m. Depth

Max. Velocity : 12.20 cm/sec

Avg. Velocity : 4.86 cm/sec (0.0486m/sec)

Average

~0.09m/sec

Output to Excel in .num format


Telemac modeling in the izmir bay

CALIBRATION DATA SET

Control Points (More):

Long: 26.8490 Lat: 38.3980 For the period of 12.08.1997-23.09.1997

Long: 26.9235 Lat: 38.3952 For the period of 12.08.1997-23.09.1997

Long: 26.8467 Lat: 38.3983 For the period of 06.11.1997-20.01.1998

Varying positions

Varying times

Calibration is still in progress due to:

Model simulation time step is 2 secs. BUT the calibration data is composed of averages from A NUMBER OF days.

In such a case, total simulation time for a single trial becomes more than 5 hours and makes the calibration process slower!!!


Telemac modeling in the izmir bay

WHAT IS NEXT?

Calibration of the TELEMAC model is going to be completed soon so that the model becomes representative for the water motion within the bay.

Following the completion of the TELEMAC modeling, Water Quality Modeling is going to be performed on SUBIEF.

In SUBIEF, there will be a number of scenario tests by changing the dominant wind direction and the average pollutant loads coming both from the Gediz and other point sources in the inner bay.

The results will be evaluated by using the computer program developed by Yvon in order to determine the critical areas in the bay considering the pollution transport.

As the time is limited for the rest of the work, all efforts will be in a continuous contact with SOGREAH

Report Writing…to be completed partly after Telemac2d modeling.


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