Support system of virtual organization for flood forecasting
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Support System of Virtual Organization for Flood Forecasting. L. Hluchy, J. Astalos, V.D. Tran, M. Dobrucky and G.T. Nguyen Institute of Informatics Slovak Academy of Sciences in cooperation with Slovak Hydrometeorological Institute. Flood Warning and Forecasting System. .

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Support System of Virtual Organization for Flood Forecasting

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Support system of virtual organization for flood forecasting

Support System of Virtual Organization for Flood Forecasting

L. Hluchy, J. Astalos, V.D. Tran, M. Dobrucky and G.T. Nguyen

Institute of Informatics

Slovak Academy of Sciences

in cooperation with

Slovak Hydrometeorological Institute


Flood warning and forecasting system

Flood Warning and Forecasting System



Data Collection Network

Data Transmission System

·

HF Radios

·

Telemetry Telecom System

Meteorological models:

ALADIN/LACE ,

ALADIN/SLOVAKIA

Rainfall Runoff Models:

NLC, HBV

River Flow Models:

NLN

Meteorological and hydrological information and forecasts

·

System of attendance of clients

·

·

User of information, warning and forecasts

Cracow Grid Workshop, November 5-6


Vah river pilot site

Vah River Pilot Site

Area: 19700km2, 1/3 of Slovak population

Cracow Grid Workshop, November 5-6


Meteorological models

Meteorological models

  • ALADIN/LACE, ALADIN/SLOVAKIA

    • numerical weather prediction system.

  • MM5

    • PSU/NCAR mesoscale model

Cracow Grid Workshop, November 5-6


Hydrological models

Hydrological models

  • NLC -Lumped rainfall-runoff model capable of modeling groundwater flow and direct runoff

  • HBV - Semi-distributed rainfall-runoff model

  • HSPF - U.S. EPA (Environmental Protection Agency) program for simulation of watershed hydrology and water quality

Cracow Grid Workshop, November 5-6


Hydraulic models

Hydraulic models

  • NLN - Lumped river system model based on the non-linear cascade concept

  • FESWMS-2DH - hydrodynamic modeling code that supports both super and subcritical flow analysis including area wetting and drying

  • RMA2 - two-dimensional depth averaged finite element hydrodynamic numerical model

Cracow Grid Workshop, November 5-6


Data needed for modeling

Data needed for modeling

  • Topographical data (cross-sections, orthophotomap,LIDAR)

  • Roughness conditions

  • Hydrological data

  • Wind data

  • Boundary data

  • Calibration and validation data

Cracow Grid Workshop, November 5-6


Geographical information systems

Geographical Information Systems

  • Handles all spatial databases

  • Transparent connection to the models

    • Generation of input files for the models

    • Storage of model outputs

  • Visualization of model results

  • Impact estimation

  • Enhanced analysis of the model results

Cracow Grid Workshop, November 5-6


Geographical information systems1

Geographical Information Systems

Scanned maps

Cracow Grid Workshop, November 5-6


Geographical information systems2

Geographical Information Systems

Orthophotomap

Cracow Grid Workshop, November 5-6


Geographical information systems3

Geographical Information Systems

Elevations

Cracow Grid Workshop, November 5-6


Mesh for finite element method

Mesh (for Finite element method)

Cracow Grid Workshop, November 5-6


Computer vision

Computer vision

Cracow Grid Workshop, November 5-6


Sms feswms modeling system

SMS/FESWMS modeling system

  • SMS (Surface-water Modeling System) is commercial software package for modeling surface water. It contains GUI for pre- and post-processing and several modeling modules

  • FESWMS (Finite Element Surface-Water Modeling System) is a hydrodynamic, depth averaged, free surface, finite element modeling module included in SMS package.

Cracow Grid Workshop, November 5-6


Experimental parameters

Experimental parameters

  • Inflow: 1500 m3s-1

  • Steady state

  • Number of elements: 13480

  • Number of nodes: 38229

  • Average distance between two neighbor nodes: 10m

  • Number of equations: 95500

Cracow Grid Workshop, November 5-6


Results flow water depths

Results: flow + water depths

Cracow Grid Workshop, November 5-6


Results flow water depths1

Results: flow + water depths

Cracow Grid Workshop, November 5-6


Results flow trace animation

Results: flow trace animation

Cracow Grid Workshop, November 5-6


Complexity

Complexity

If the simulated area increases 2 times in every dimension (or the distances between two neighbor nodes decrease 2 times for better accuracy), then:

  • Number of nodes increases 4 times (O(N2))

  • Number of equations increase 4 times (O(N2))

  • Length of fronts in FESWMS increases 2 times (O(N))

  • Total memory requirement increases 8 times (O(N3))

  • Computation time increases 16 times (O(N4)) !!!

    For modeling and simulation of large areas, parallel implementation is necessary.

Cracow Grid Workshop, November 5-6


Parallelization approach

Remote processing

Processing

input data

Pre-processing

Parallel

computational

kernel

Post-processing

Save

solutions

Parallelization approach

Cracow Grid Workshop, November 5-6


Support system for virtual organisation

Data sources

meteorological radars

  • External sources of information

  • Global and regional centers GTS

  • EUMETSAT and NOAA

  • Hydrological services of other countries

surface automatic meteorological and hydrological stations

systems for acquisition and processing of satellite information

High performance computers

Storage systems

Grid infrastructure

meteorological models

databases

hydrological models

hydraulic models

Users

Flood crisis teams

  • river authorities

  • energy

  • insurance companies

  • navigation

  • meteorologists

  • hydrologists

  • hydraulic engineers

  • media

  • public

Support System for Virtual Organisation

Cracow Grid Workshop, November 5-6


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