Recent application of delft3 d flexible mesh model to estuarine and river environments

1. Thursday, November 05, 2015
RECENT APPLICATIONS OF DFLOW-FM TO RIVERINE ENVIRONMENT
G.T. Menel Lemos, A. Gozzi, E. Jeradi, A. Tittonel
Next Generation River Modelling – 2015

2. • TECHNITAL S.p.A. is an Italian Engineering Company mainly working in
Hydraulic, Marine, Environmental and Transport fields
• The cooperation with Deltares started when it was still Delft Hydraulics,
more or less in 90’s years
• Many specialized studies have been developed together: the
hydrodynamic, ecological and morphological studies and models of the
Venice Lagoon (Italy) in relation with the MOSE project, the international
Gran Port of Al Faw (Iraq), the interventions for the protection of the coast
of Batumi (Georgia), etc.
• In 2013 Deltares asked to Technital S.p.A. to participate to Beta Test
activities of the DFlow-FM model, at that time under development. To test
the possibilities of the new model, both under an hydrodynamic and water
quality point of view, Technital applied the Dflow-FM model of the Lagoon
of Venice, which results were presented at Deltares Software Days in
2013 (hydrodynamic) and 2014 (Water Quality)
• Since then, Technital S.p.A., in agreement with Deltares, is applying
DFlow-FM model to other projects, including in the riverine environment
• In this presentation, some of the most significant recent applications
(some under development) is reported
INTRODUCTION
05/11/2015

3. CASE STUDIES
05/11/2015

4. LOWER STRETCH OF TAGLIAMENTO RIVER: HYDRAULIC ISSUES
05/11/2015

5. LOWER STRETCH OF TAGLIAMENTO RIVER: HYDRAULIC ISSUES
05/11/2015

6. LOWER STRETCH OF TAGLIAMENTO RIVER: ENVIRONMENTAL ISSUES
05/11/2015

7. LOWER STRETCH OF TAGLIAMENTO RIVER: ENVIRONMENTAL ISSUES
05/11/2015

8. DESIGN PHASES
Flood protection
Design of interventions
(High Return period event)
Integration of interventions
with environment
Evaluations in «usual» conditions
(Low Return period)
Available data and
studies
Site surveys
Hydraulic modelling
Available data and
studies
Site surveys
Environmental
modelling
Design of the intake
structure
Upgrading safety of
Tagliamento river
embankments
Structural update of
the Cavrato channel
Environmental pre-
assessment
Master plan of
impacted areas
05/11/2015

9. FIXED WEIR
ADJUSTABLE WEIR
DFLOW-FM MODEL – CAVRATO FLOODWAY INTAKE STRUCTURES
05/11/2015

10. DESIGN OPTIMIZATION  In relation with flood protection
MINIMIZATION OF RISE UP WATER LEVELS
UPSTREAM
In the stretch Cesarolo - Latisana
1. Minimization of flow discharged towards the lower stretch of Tagliamento
2. Optimization of the Intake structure minimization of backwater effects
05/11/2015

11. DESIGN OPTIMIZATION  In relation with flood protection
MINIMIZATION OF RISE UP WATER LEVELS
UPSTREAM
In the stretch Cesarolo - Latisana
1. Minimization of flow discharged towards the lower strect of Tagliamento
2. Optimization of the Intake structure minimization of backwater effects
3. By-pass of the Cesarolo bend
05/11/2015

12. DFLOW-FM MODEL - SCHEMATIZATION
05/11/2015

13. DFLOW-FM MODEL – SCHEMATIZATION – LATISANA AREA
05/11/2015

14. DFLOW-FM MODEL – SCHEMATIZATION – TAGLIAMENTO OUTLET
05/11/2015

15. DFLOW-FM MODEL – SCHEMATIZATION – CESAROLO NODE
05/11/2015

16. DFLOW-FM MODEL – SCENARIO WITH INTERVENTIONS
05/11/2015

17. DFLOW-FM MODEL – SCHEMATIZATION - VERTICAL LEVELS
05/11/2015

18. DFLOW-FM MODEL – SCENARIOS WITH BY-PASS - SCHEMATIZATION
05/11/2015

19. DFLOW-FM MODEL – STRUCTURES SCHEMATIZATION
FIXED WEIR
ADJUSTABLE WEIR
05/11/2015

20. DFLOW-FM MODEL DESIGN CONFIGURATION – SCENARIO06bis –
05/11/2015

21. DFLOW-FM MODEL DESIGN CONFIGURATION – SCENARIO06bis –
05/11/2015

22. DFLOW-FM MODEL DESIGN CONFIGURATION – SCENARIO06bis –
05/11/2015

23. DFLOW-FM MODEL DESIGN CONFIGURATION – SCENARIO06bis –
05/11/2015

24. DFLOW-FM MODEL DESIGN CONFIGURATION – SCENARIO06bis –
05/11/2015

25. DFLOW-FM MODEL DESIGN CONFIGURATION – SCENARIO06bis –
05/11/2015

26. SCENARIO01SCENARIO06-bis
DFLOW-FM MODEL – SCENARIOS WITH BY-PASS - RESULTS
05/11/2015

27. DFLOW-FM MODEL – SCENARIOS WITH BY-PASS - RESULTS
05/11/2015

28. LOWER STRETCH OF TAGLIAMENTO RIVER: FURTHER DEVELOPMENTS
• The preliminary design phase is concluded
• In the next phase, further analyses are foreseen, including the
morphological model of the Baseleghe Lagoon to verify the effects
of the fluxes discharged by Cavrato during the Tagliamento river
floods.
05/11/2015

29. THE PADUA – VENICE WATERWAY
05/11/2015

30. THE PADUA – VENICE WATERWAY
The Venice Padua waterway is a project developed in 1970s and realised in part. Works were interrupted and the
aim of the present project is to update it to the class V-a.
Besides the waterway should:
• Operate as floodway during Brenta river’s maximum fluxes (typically during Autumn and Spring seasons)
• Allow to increase fresh water discharges into the Venice Lagoon (rivers diversed during 14th-15th centuries)
Padua
Venice
05/11/2015

31. THE PADUA – VENICE WATERWAY – THE COMPLETE SYSTEM
Lagoon of Venice
Adriatic sea
Brenta river
Novissimo channel
Padua-Venice waterway
05/11/2015

32. THE PADUA – VENICE WATERWAY – HYDRAULIC ASPECTS
Lagoon of Venice
Padua-Venice waterway
05/11/2015

33. THE PADUA – VENICE WATERWAY – ENVIRONMENTAL ASPECTS
05/11/2015

34. 05/11/2015
Scenarios
Evaluation of effects
Waterway +
Venice lagoon present
situation
Waterway +
Venice lagoon with
Mobile barriers
Configuration
Waterway only
Waterway +
Brenta floodway
(Q=350 m3/s or more)
Increased input of fresh water
Use assumptions
Scenario 2
Scenario 1
Scenario 4
Scenario 3
Scenario 6
Scenario 5
THE PADUA – VENICE WATERWAY: STUDY SCENARIOS

35. DFLOW-FM – VENICE LAGOON GENERAL MODEL
05/11/2015

36. DFLOW-FM – VENICE LAGOON GENERAL MODEL
05/11/2015

37. DFLOW-FM – PADUA – VENICE WATERWAY MODEL
05/11/2015

38. DFLOW-FM - VELOCITY FIELD
05/11/2015

39. DFLOW-FM – BED STRESS
05/11/2015

40. DFLOW-FM – SALINITY
05/11/2015

41. DFLOW-FM – WAQ – SUSPENDED SEDIMENT
05/11/2015

42. DFLOW-FM – WAQ – SUSPENDED SEDIMENT
05/11/2015

43. DFLOW-FM – WAQ – SUSPENDED SEDIMENT
05/11/2015

44. DFLOW-FM – WAQ – SUSPENDED SEDIMENT
05/11/2015

45. DFLOW-FM – WAQ – SUSPENDED SEDIMENT
05/11/2015

46. DFLOW-FM – WAQ – DEPOSITED SEDIMENTS
05/11/2015

47. PADUA-VENICE WATERWAY: FUTURE ACTIVITIES
• Survey campaigns to better define the loads (water and
sediments) coming from the Brenta river
• Focus on water/sediment quality
• WAQ issues need long term analysis
• Aggregation of the existing model (if possible…) or
• New hydro model
• less horizontal resolution
• 3D effects investigation
• Structures + RTC-Tools
• Management of the locks and by-pass channels
• Management of closures of mobile gates of the inlets
during flooding events
05/11/2015

48. we plan the world of tomorrow
Follow us on:
www.technital.it