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HarborSym

HarborSym. HarborSym. A Data-Driven Monte Carlo Simulation Model of Vessel Movement in Harbors David Moser, Keith Hofseth, Shana Heisey, Richard Males , Cory Rogers. Flood Damage Reduction. Hurricane Protection. CORPS OF ENGINEERS. Navigation. Ecosystem Restoration.

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HarborSym

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  1. HarborSym HarborSym A Data-Driven Monte Carlo Simulation Model of Vessel Movement in Harbors David Moser, Keith Hofseth, Shana Heisey, Richard Males, Cory Rogers

  2. Flood Damage Reduction Hurricane Protection CORPS OF ENGINEERS Navigation Ecosystem Restoration

  3. Benefit-cost analysis required Navigation project benefits: Reduction in congestion (transportation cost) Compare future conditions 50 year analysis Standardized, transparent tools Coastal Navigation

  4. Photo credit: Containerisation International/Lloyds List/Informa UK Ltd Need for Navigation Modeling Complex Problem • Channel width & depth constraints • Multi-port issues • Conflicts from random interactions

  5. Navigation Modeling • Single port • Focus on channel improvements

  6. HarborSym Model • Planning-Level Model • Data Input • Port layout • Vessel Calls • Rules • Model Calculation • Vessel interactions within harbor • Output • Time in system • Delay times

  7. HarborSym Modeling Objectives PORTABILITY • Port specific information provided in data EASE OF USE • Discrete Event Monte Carlo Simulation Model • C++ / Microsoft Access / Visual Basic TRANSPARENCY • Windows into delay calculations

  8. Computational Engine (Simulation Kernel) User Interface RUN Database Output Data Files Report Graphics HarborSym Architecture

  9. TEXAS Study Area MEXICO HarborSym Application Sabine-Neches Waterway

  10. NODES Docks 133 actual docks 11 “virtual” docks 10 Turning Basins Channel Dimensions Proposed Improvements REACHES Single route connecting nodes Uniform dimensions TOTAL: 47 LEG Contiguous reaches Sabine Network

  11. Graphical User Interface Network builder Data explorer Network Data entry tables

  12. Sabine Transit Rules No sailing (single vessel) • by DWT, length, beam No meeting (multi-vessel) • by DWT, length, breadth, draft, combination No overtaking (multi-vessel) • by vessel type

  13. Generic Transit Rules

  14. Model Processing Logic • Vessel Arrival (departure) Event • Must pass all transit rules in leg to proceed • Conflict Checking • Store projected arrival/departure time of vessels in system (by reach) • Test rules in all leg reaches • Vessels already moving have priority • If conflict occurs: • Wait, try again • Proceed to anchorage

  15. Testing Conflicts in Reach

  16. Additional HarborSym Features Tidal Influence • Height of water • Strength of current • Priority Vessels • Move unrestricted through harbor • Cruise Ships, Gaseous Tankers • Others anticipate arrival & face delays

  17. Additional HarborSym FeaturesWithin Simulation Animation tide/current Time of day Commodity movements Vessel status

  18. HarborSym OutputCapturing Widening Benefits Time in hours, results from 100 iteration simulation.

  19. HarborSym OutputCapturing Widening Benefits

  20. HarborSym OutputPost Process Animation

  21. Discussion Discussion

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