TUFLOW Workshop 2013
Stream 1 Presentation Sessions
Welcome to the conference from John Young. A short talk on programme, pubs and pirates.
Managing Flood Risk in the California Central Valley
John Pritchard, Woods Rodgers (Download PDF)
John Pritchard will be speaking on U.S. floodplain management issues focusing on flood risk to the Central Valley of California. Modelling challenges including complex hydrology, hydraulics and calibration.
Smart Flood Risk Management Solutions
Keming Hu, Royal Haskoning DHV (Download PDF)
Grimsby Tidal Defences - Wave Overtopping and Coastal Flooding
This £14.5m tidal defence scheme promoted by the UK Environment Agency will strengthen the sea wall around Grimsby docks and will reduce the risk of flooding to 14,000 properties.The flood modelling for Grimsby has been undertaken using a TUFLOW model with boundary conditions based on the most recent Environmental Agency's design sea level guidance and wave overtopping calculations in accordance with the EurOtop Manual (2007). The model outputs have been processed for the flood damage economics using Black & Veatch's in-house Flood Damage Economics Model (FDEM) which has an extensive series of quality assurance checks. The modelling effort on Grimsby has enabled refinement of the design of the proposed defences and resulted in significant savings in construction cost.
The Queensland Floods - Two Years On
Bill Syme, BMT WBM
At TUFLOW 2011 Bill Syme presented a talk on severe flooding on Queensland and in particular the effects on Brisbane (the home of BMT WBM). In TUFLOW 32013 he will be looking at the impact of this flood three year on from the floods and reflecting on lessons learnt.
SEPA Reservoir Inundation Mapping
Jane Tingay, Capita Symonds
SEPA commissioned Capita Symonds to undertake Reservoir Inundation Mapping (RIM) for all the statutory reservoirs in Scotland. This project is similar to the English RIM project however the main aim for SEPA RIM is risk designation whereas English RIM was initially for emergency planning. Overall SEPA RIM involved a more simplistic approach in respect to the development of breach hydrographs, modelling and deliverables. There were some aspects of SEPA RIM that made the project challenging, including the security requirements and the Scottish topography. With the development of the TUFLOW GPU module run times have been significantly reduced, in some situation from 150 hours to just 8 hours. This presentation looks at the use of the TUFLOW GPU module, comparisons of the two sets of the results and the modelling issues faced.
Brandhall Brook - An Urban Application of ISIS-ESTRY-TUFLOW
Project initiated as adaptation of an existing "strategic" EA ISIS-TUFLOW model of the Brandhall Brook in Sandwell (urban watercourse) for a site specific flood risk assessment. The model was used as tool to design a flood route though housing development--and has now evolved in to a Flood Alleviation Scheme for the wider community - model used as a tool to design and test flood attenuation area to remove original development from flood risk and offer benefit to local community (developer working in partnership with EA and Sandwell Metropolitan Borough Council). The FAS is currently in planning and preparing for DEFRA funding application.
Use of TUFLOW to Assess the Impact of Large Oil Tank Failure and Fire Suppression
Adam Parkes, CH2M Hill
Industrial sites are required to include design features which prevent pollution of the environment. For large petro-chemical storage facilities, PPG18 and CIRIAR197 are critical documents, defining the standard of protection to be provided in the even of storage failure and fire. Using a TUFlow model with variable geometry, we modelled the failure of several large storage tanks and subsequent application of fire suppression water to a bunded site to understand flow routes and depths during such an event, assisting with emergency planning, while also confirming the design standard of isolation bunds.
Unmanned Aerial Vehicles - A Cost-Effective Alternative to LiDAR
Annet Dude, Severn Partnership & Andrew Blogg, DandS (Download PDF)
UAVs were developed for the military where they acquired the name, "drones" but recently the commercial sector has embraced the technology and experienced substantial growth particularly using micro UAVs. There are many terms for unmanned systems but the definition is essentially the same: UAVs are capable of operating without an internal pilot; are tethered by a radio control link; and can be pre-programmed for both flight and payload operations prior to launch. It is now possible to capture high resolution aerial data much more readily at a fraction of a cost of other methods currently available. Using a UAV, Digital Mapping and Survey have demonstrated accuracies very close to topographical survey standards. Where once a helicopter or Aircraft where necessary for capturing LiDAR Digital Terrain Model data, similar data can now be acquired using UAV technology. Digital Mapping and Survey will hopefully open up discussions about the potential use of this data as an alternative in hydraulic modelling.
Bristol City Council City Docks Study
The interaction between tidal inundation / storm surge and the river Avon and Frome in conjunction with the presence of the Bristol Floating Harbour means that the flooding mechanisms are highly complex. Bristol City Council in conjunction with consultants Mott MacDonald, Edenvale Young and Hyder Consulting has been undertaking an extensive study to evaluate the risks of fluvial flooding and tidal inundation the city which includes ISIS-TUFLOW modelling of the city centre and LEZ. The consultants have carried out condition assessments of the Floating Harbour's assets many of which are over 100 years old; with the objective of developing a coherent strategy for the future. The study has revealed that Bristol is particularly vulnerable to climate change.
Japanese Tsunami Benchmark Modelling
Phil Ryan, BMT WBM
Phil will be presenting a case study on the Japanese Tsunami of 2011 the sensitivity of the model associated with the hydraulic parameters and the use of TUFLOW FV for Tsunami modelling.
Using the QGIS Crayfish Plugin. An Alternative to SMS
Peter Wells, Lutra Consulting
The Crayfish plugin enables Quantum GIS (a popular open source GIS) to read 2D model results directly, allowing users to display time varying scalar and vector datasets in a similar manner to SMS and ISIS Mapper. In this presentation, the developers describe the plugin's current and future features as well as the platform on which it is based.
Modelling Road Gullies
Ruth Eabry will be speaking about modelling road gullies, looking at the development of stage discharge curves to determine the amount of flow going into the 1d pipe network from the 2d surface.
Direct Rainfall Modelling in TUFLOW and 1D-2D - Model Emulation for Hydrological Analysis
Simon Jepps, Thomas Mackay
A case study presenting the use of direct rainfall modelling and 1D model emulation of 1D-2D models to aid design hydrological analysis in complex catchments.
The River Rother: Automated Generation of a Complex ISIS-TUFLOW-PIPE Model
Gerald Morgan, Edenvale Young (Download PDF)
A case study in the automation of the generation of TUFLOW inputs including 1D 2D links, ESTRY networks and cross sections and hydrological inflow boundaries.