DSD-INT 2014 - OpenMI Symposium - Integrated Environmental Modelling, Andrew Hughes, British...

Integrated Environmental Modelling applied to the Thames Basin, UK: Linking models

using OpenMI to allow multi-scale simulation of groundwater processes

Hughes (with lots of other contributors, but notably: Bricker, Jackson, Mackay, Mansour, Peach, and Upton)

OpenMI day – Delft Software Days 31st October 2014

Study Area

Hydrogeology

• Thames river basin consists of 20 groundwater systems • Focus on:

• Cretaceous Chalk • Jurassic Limestone

The Chalk Aquifer Chalk • Highly permeable with

fractures and solution enhancement

• Palaeogene in the central part leading to groundwater confinement

• Rivers are sustained by groundwater input

• Use of fully distributed groundwater model

The Limestone Aquifer Limestone

• Characterized by its complex fractured structure

• Very responsive to recharge

• Well drained by rivers • Groundwater discharge

runs over non-aquifers and onto the Chalk

• Groundwater discharge is simulated using semi-distributed groundwater model

Hydrogeological complexity

Role of the Palaeogene and karst in the Chalk groundwater system in the Pang-Lambourn

Importance of the Palaeogene deposits?

London Clay

Lambeth Group

Colne Valley - Adits

Note alluvium, sands and gravel, and river terrace deposits

Adit Abstraction Systems Modelling Wall Hall Pumping Test

Distance from shaft (m)

Modelled levels after 100 days pumping

Cotswolds limestones

Upper Jurassic

Middle Jurassic

Lower Jurassic

Oxford Clay

Great Oolite (GO)

Inferior Oolite (IO)

IO FE GO

FullersEarth

Great Oolite GW level Great and Inferior Oolite GW level

Geology in 3D using GSI3DTM

Conceptual understanding Cotswolds Cotswolds

• Semi-distributed model of aquifer system: single head calculated in each “bucket”.

• Designed to be incorporated into a multi-aquifer model of Thames catchment.

• Code is OpenMI compliant to link with other components.

Numbering shows ID of each “bucket” Rivers are represented as distributions of level for each “bucket”

Cotswolds – modelling approach

Linking multiple models in OpenMI

Jan-91 Sep-93 Jun-96 Mar-99 Dec-01 Sep-04 Jun-07 Mar-10 Nov-12

Cell 14Churn at Perrot's Brook

Jan-91 Sep-93 Jun-96 Mar-99 Dec-01 Sep-04 Jun-07 Mar-10 Nov-12

Cell 13Coln at Fossebridge

Jan-93 Jun-94 Oct-95 Mar-97 Jul-98 Dec-99 Apr-01 Sep-02 Jan-04 May-05 Oct-06

Cell 5Thames at West Mill Cricklade

Jan-93 Sep-95 Jun-98 Mar-01 Dec-03 Sep-06 Jun-09 Mar-12

Cell 1Thames at Eynsham

Need for Model Linking

GW Abstraction

Return flow to Thames at Oxford

River flow at Reading

Treated wastewater returned to Thames at Oxford

Groundwater abstraction regulated by flow at Reading

River flow

Pumping rate

50 Ml/d

150 Ml/d

River Flow

Overland flow Recharge

Baseflow

Current Suite of Models

Chalk •2D TV distributed model •Inputs: recharge, spring flow, abstractions •Outputs: baseflow, groundwater head

Recharge •2D distributed model •Inputs: climate (rainfall and PET) •Outputs: overland flow, soil moisture, recharge

Limestone •Semi-distributed model (variably sized units) •Inputs: recharge •Outputs: baseflow, groundwater head

River Thames •1D river routing algorithm •Inputs: overland flow, baseflow •Outputs: total flow

WM module •Inputs: river flow Outputs: pumping rate, discharge to river

River Flow

Overland flow

Recharge

Thames

Baseflow

The Open Modelling Interface (OpenMI) Standard

Results

Boreholes

• Groundwater typically exploited using them

• Complex situation – lots of mechanism

• Scale issue: regional flow 10s km, but boreholes operate on cm scale

• Challenge in terms of modelling them

Multi-scale Groundwater Modelling

Radial Flow Model ZOOMQ3D Radial-Cartesian Coupling

OpenMI

Radial Flow Model

• Finite difference approximation • Darcy-Forchheimer (non-linear flow) • Logarithmic radial node spacing • Vertical layering • Vertical & horizontal heterogeneity

• Partially or fully penetrating borehole • Borehole storage • Borehole casing & screening • Seepage face development

Radial Flow Model Radial-Cartesian Coupling

SPIDERR Flow Model •Hybrid radial-Cartesian method applied in petroleum reservoir models • Limitations of grid construction BUT • Quick, simple & user friendly

Radial Flow Model Radial-Cartesian Coupling

ZOOMQ3D OpenMI

• OpenMI standard for linking models • Data exchange maintains consistency between two models • Quick and easy to link several borehole models • Make use of existing regional models

SPIDERR Flow Model ZOOMQ3D OpenMI

Pumping Rate Parameterisation

Boundary Flows Recharge & Leakage

Study Area

Model Application

1. Calibration of SPIDERR Flow Model to pumping test data 2. Coupling of SPIDERR Flow Model with ZOOMQ3D regional model

3. Historic simulation and comparison with operational data 4. Abstraction scenarios to inform DO assessment

to Thames Water operational supply borehole to inform assessment of Deployable Output

Model Application 1. Calibration of SPIDERR Flow Model to pumping test data

Modelled and observed drawdown for a step- drawdown and constant rate test at the

abstraction borehole

Model Application 2. Coupling of SPIDERR Flow Model with ZOOMQ3D regional model

3. Historic simulation and comparison with operational data

Modelled and observed groundwater levels in the abstraction borehole

Modelled (coupled and uncoupled ZOOMQ3D ) and observed baseflow in

the River Kennet close to the abstraction borehole

Model Application 4. Abstraction scenarios to inform DO assessment

Modelled groundwater levels in the borehole under increasing rates of abstraction

Modelled baseflow in the river under increasing rates of abstraction

Updated DO assessment using modelled data suggests the borehole may be capable of sustaining

a higher rate of abstraction under drought.

Conclusions • This a demonstration of how OpenMI technology

offers flexibility to link models o Models can be of different structure (Fully

distributed versus semi-distributed groundwater models)

o Models can be of different nature (groundwater models, river models, management modules)

o Models can operate at very different scales (regional groundwater flow, river reach, borehole)

• While OpenMI technique is not straight forward to use, it is a more pragmatic approach than building one model that represents all processes

DSD-INT 2014 - OpenMI Symposium - Integrated Environmental Modelling, Andrew Hughes, British...

Science

Transcript of DSD-INT 2014 - OpenMI Symposium - Integrated Environmental Modelling, Andrew Hughes, British...

DSD using VHDL

Introduction To OpenMI

OpenMI Developers Training

Dsd furniture

Modeling synthesis in hydro-science across continents ...€¦ · OpenMI SWAT adaptation at UNESCO-IHE, Delft 9 Section 2.2.2. Ongoing OpenMI-ISIS migration work at Halcrow 10 Section

DSD Business Systems

DSD-INT 2014 - OpenMI Symposium - An OpenMI composition with channel flow and real-time control modelling for a Dutch polder system, N de Hulster (Arcadis), S Bosch (Hydroconsult)

DSD Report

DSD Solution Overview

AIR POWER REVIEW -high.pdf“The Qu’ran and War: Observations on ... Dr I Gooderson, DSD, JSCSC Dr D Hall, DSD, JSCSC Dr A Conway, DSD, RAFC Dr B Jones, DSD, JSCSC Dr D Jordan, DSD,

The International DSD Registry – An Update Jillian Bryce I-DSD Project Manager

White Paper of the DSD Working Group 3 - UNU-INWEHinweh.unu.edu/wp-content/uploads/2013/05/DSD-WG3... · White Paper of the DSD Working Group 3 ... please contact the DSD Working

32bit SRC with PCM/DSD conversion - Audio Design Guide · SRC Conversion PCM→PCM, DSD →DSD DSD→PCM, PCM→DSD DoP→DSD, DoP→PCM PCM→PCM conversion only SRC Bypass Function

DSD Process

DSD journal

Globally Distributed Development The Role of Software Processes in DSD DSD Team.

Integrated Modeling of Hydrological Processes through OpenMI

Apostila DSD

DSD-INT 2014 - OpenMI Symposium - An operational forecasting system for subsurface floods in the city of Cologne, Moritz Kreyenschulte, RWTH

Dsd Lab Report