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2D modelling of c olmation and d ecolmation processes for river r estoration

2D modelling of c olmation and d ecolmation processes for river r estoration b y Alex Stubbs, Cardiff University (stubbsa1@cardiff.ac.uk) Supervisors: Dr Bettina Bockelmann - Evans and Prof . Thorsten Stoesser. Research aims

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2D modelling of c olmation and d ecolmation processes for river r estoration

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  1. 2D modelling of colmation and decolmation processes for river restoration by Alex Stubbs, Cardiff University (stubbsa1@cardiff.ac.uk) Supervisors: Dr Bettina Bockelmann-Evans and Prof. Thorsten Stoesser

  2. Research aims • Extend the existing computational 2D model DIVAST to allow the simulation of colmation and decolmation processes and any resulting change in dissolved oxygen levels • To further understanding of microscopic turbulent flows in both the near-bed and infiltration zones • Utilise new experimental data, obtained using innovative techniques, for model verification and validation • To aid the development and assessment of river restoration schemes towards achieving WFD targets www.wisecdt.org

  3. Major milestones so far www.wisecdt.org

  4. The plan looking forward • Model Cardiff University’s narrow flume (0.3m wide) using DIVAST • Verification and validation data obtained through collaboration with another PhD student undertaking flume experimentation • Extend this model to allow colmation and decolmation processes to be simulated • Present findings to a targeted conference audience during 2018 • Apply model to case study river reaches in South Wales • Collaborative work with Natural Resources Wales • Analyse findings and complete thesis writing for September 2019 submission www.wisecdt.org

  5. In Summary • Year 1 – Completed • Literature review completed • Review paper submitted • Poster presentation at EGU2017 conference • Year 2 – Just starting • Extension of DIVAST, validation and verification of model • Attendance at field specific conference • Application of model to case study scenarios • Year 3 – Looking forward • Analysis of results • Thesis write-up • For further information please contact: Alex Stubbs, Cardiff University (stubbsa1@cardiff.ac.uk) www.wisecdt.org

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