Hydrodynamics of the Inner Canals of Venice

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Hydrodynamics of the Inner Canals of Venice

• Sponsored by
• UNESCO-ROSTE
• in collaboration with
• Insula S.p.A.
• Christine Biscotti Andrea Emery
• Maxwell Pistilli Joseph Zsofka

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Project DescriptionDescrizione del Progetto

• Purpose To characterize the hydrodynamics of the
  inner canals of Venice

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Applications of ResultsUtilizzo dei risultati

• Validation of the sedimentation model
• Contribute to the scheduling of maintenance of
  the canals

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Reasons for MaintenanceMotivazioni per la
Manutenzione

• Lack of a modern sewage system
• Continuous build-up of sediment in canals
• Results of these problems
• Shallow water depth for boats
• Wall damage
• Poor hygiene of water

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Past StudiesStudi Passati
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Segment IdentificationIdentificazione dei
Segmenti
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Canal Segments Targeted by our StudySegmenti
Studiati
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Astronomical Effects on the TidesEffetti
Astronomici sulle Maree
Sizigia
Punto Fisso
Terra
Quadratura
Quadratura
Sizigia
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Measurement SchedulingPeriodi delle Misure
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Measurement TimesOrari delle Misure
23.50
0.50
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Measurement SpecificationsSpecifiche delle
Misurazioni
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Measurement Procedure Procedimento di Misurazione
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Measured Canal SegmentsSegmenti Misurati

• Total 133

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Unmeasured Canal SegmentsSegmenti Non Misurati

• Total 66

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Catalogue of Measurement SitesCatalogo dei Siti
di Misurazione
Rio de l'Acqua Dolce
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Analysis of DirectionsAnalisi delle Direzioni

• Direction during incoming and outgoing tides
• General direction of flow
• Northwest during incoming
• Southeast during outgoing

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Analysis of Speeds Analisi delle Velocità

• Categorization of velocities (cm/s)
• Stagnant (Stagnanti) 0v1
• Slow (Pigri) 1ltv10
• Medium (Mediamente Vivaci) 10ltv20
• Fast (Vivaci) vgt20

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Sedimentation and Flow VelocitySedimentazione e
Velocità di Corrente
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Flushing IndexIndice del Ricambio Idrico
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Sedimentation vs. Flushing IndexSedimentazione e
Ricambio Idrico
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Sedimentation vs. Flushing IndexSedimentazione
e Ricambio Idrico
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Categorization of Flow BehaviorTipologie
Idrodinamiche dei Segmenti
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Importance of Model VerificationImportanza della
Verifica del Modello
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Conclusions Conclusioni

• Unusual flow behavior demonstrates the need for a
  sedimentation model
• Flushing ability has a bigger impact on sediment
  removal than flow velocity alone
• Effective use of this information will lead to an
  efficient maintenance schedule

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• Any Questions?
• Domande?