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Dr Reza Ahmadian

Dr Reza Ahmadian


School of Engineering

+44 (0)29 2087 4003
S2.42, Queen's Buildings - South Building, 5 The Parade, Newport Road, Cardiff, CF24 3AA
Available for postgraduate supervision


I am a Reader and the Head of International Engagement at the Department of Civil Engineering, Cardiff University. I have about 15 years experience in developing and refining hydro-environmental computational models to investigate hydrodynamic, flood modelling as well as simulating water quality and sediment transport processes. I am a member of Editorial panel of Proceedings of the Institution of Civil Engineers - Water Management and a guest Editor for Water Special issue. I am also the past Chair and member of the leadership team of the International Association for Hydro-environment engineering and Research (IAHR) UK chapter.

My research is mainly focused on hydro-environmental modelling motivated by reducing the risk to humans’ health and sustainable use of water. Three key strands of my research are as follows:

  • Flood modelling with particular focus on modelling flash floods, dynamically 1D-2D linked flood models, implementation of sustainable solutions including, Sustainable Drainage Systems (SuDS) and Natural Flood Management (NFM), modelling flood risk and hazard and evacuation and access route planning.

  • Water quality and sediment transport modelling particularly faecal bacteria modelling including interaction with sediment, dynamic decay rate and monitoring approaches for both bathing water and aquaculture sites.

  • Marine and riverine renewable energy including smal hydro-power, tidal stream and tidal range schemes.

I graduated from Amirkabir University of Technology - Tehran Polytechnic (Iran), with a BSc in Civil Engineering in 2001 and an MSc in Water Engineering in 2005. I also worked as a civil engineering at different levels, before I started my PhD including during my under graduate and masters studies.

My PhD research was focused on improving various 1D and 2D hydro-environmental numerical models through enhancement of boundary conditions, increasing model efficiency, linking model applications compliance with OpenMI standard, development of a user-friendly graphical user interface and incorporating numerical models into a GIS software beside refinements of models using laboratory data. Through a Halcrow (now CH2M) studentship, I was also in development of ISIS 2D and linking of the model to ISIS 1D (both are components of Flood Modeller Pro now).

I worked as research associate at Cardiff University from Feb 2010 to Sep 2013, working on two different projects simultaneously. One of the projects involved developing hydro-environmental models to predict water quality at a pilot site, namely Swansea Bay, and providing a better understanding of pollution sources, to assist with maintaining UK’s Blue Flag beaches by meeting the new EU Bathing Water Directive. The other project involved developing hydro-environmental models to simulate the hydro-environmental impacts of various marine renewable energy schemes, including tidal stream turbines and tidal range schemes, such as tidal lagoons and barrages.


Career Overview:

  • Reader at School of Engineering, Cardiff University (August 2019- present)
  • Senior Lecturer at School of Engineering, Cardiff University (August 2017- July 2019)
  • Lecturer at School of Engineering, Cardiff University (September 2013- July 2017)
  • Research Associate in Hydro-environmental Modelling, Cardiff University (February 2010 – September 2013)
  • Research Associate in Hydro-environmental Modelling, Cardiff University (April 2007- September 2008)
  • Beton Shargh Co., Iran (June 1998- August 2005)


  • PhD., Cardiff University (Full time; October 2005 –February 2010)

Thesis: Modelling Hydrodynamic and Bacterial Processes through Linked River, Floodplain and Coastal Systems: with Particular Application to Marine Turbines, Barrages and Embankment Breaches.

  • MSc Water Engineering (Full time; September 2002- February 2005) Amirkabir University of Technology, Tehran, Iran.

Thesis: Estimation of Sediment Load in Rivers Using Artificial Neural Networks

  • BSc in Civil Engineering (Full time; September1996 –September 2001)

Amirkabir University of Technology, Tehran, Iran.












  • Fenrich, al. 2011. Input-output modelling of tidal renewable energy. Presented at: 34th IAHR World Congress and 33rd Hydrology and Water Resources Symposium and 10th Conference on Hydraulics in Water Engineering, Brisbane, Australia, 26 June - 1 July 2011 Presented at Valentine, E. et al. eds.Proceedings of the 34th IAHR World Congress, 33rd Hydrology and Water Resources Symposium and 10th Conference on Hydraulics in Water Engineering. Barton, ACT, Australia: Engineers Australia pp. 1188-1193.
  • Ahmadian, R., Falconer, R. A. and Bockelmann-Evans, B. 2011. Comparison of hydro-environmental impacts for ebb-only and two-way generation for the Severn Barrage. Presented at: 34th IAHR World Congress 33rd Hydrology and Water Resources Symposium, 10th Conference on Hydraulics in Water Engineering:balance and uncertainty - water in a changing world, Brisbane, Australia, 26 June - 1 July 2011 Presented at Valentine, E. M., Apelt, C. J. and Ball, J. eds.Proceedings of the 34th IAHR World Congress 33rd Hydrology and Water Resources Symposium, 10th Conference on Hydraulics in Water Engineering : balance and uncertainty - water in a changing world. Barton, A.C.T: Engineers Australia pp. 1247-1254.
  • Ahmadian, R., Falconer, R. A. and Bockelmann-Evans, B. N. 2011. Hydro-environmental impact assessment of the significance of the shape of arrays of Tidal Stream Turbines. Presented at: World Renewable Energy Congress - Sweden, Linköping, Sweden, 8-13 May 2011.







Module Leader (ML) for Application of Numerical Analysis in Engineering, year 4, Cardiff University (2013- present).

Teaching Environmental and Computational Hydraulics. WISE CDT graduate school. Exeter University (2018).

ML for Environmental Fluid and Geomechanics, year 1, Cardiff University (2015-present).

ML for Field Studies of the Natural and Built Environment (week-long residential field course) and delivering Coastal Zone Engineering and Water Engineering during the field trip, year 2, Cardiff University (2015-2018).

ML for First Year laboratories in civil engineering and delivering mechanical testing laboratory, year 1, Cardiff University (2013-2015).

Surgeries for First and Second Years Engineering Analysis, Cardiff University (2013-2014).



Promoting Energy-water Nexus resource efficiency through Renewable Energy and Energy Efficiency (EERES4WATER)

Ahmadian REU INTERREG Atlantic Area£282,659

01/04/2019- 31/03/2022

Water Informatics: Science and Engineering (WISE) Centre for Doctoral Training (Since 2018)

Shunqi P, Ahmadian REPSRC£1,147,795

01/10/2018- 30/09/2022

Studies on disaster-causing
mechanisms and disaster reduction
countermeasures of urban flooding in
China and the UK
Ahmadian R, Falconer RARoyal Academy of Engineering£197,22401/04/2018- 30/3/2021
Dynamic Assessment and Intelligent
Tracking of Coastal City Flood Risk
Ahmadian R, Falconer RA (Led by Hohai University)Royal Academy of Engineering£70,000

01/04/2018- 30/3/2020

Impacts of high spring tides on saltmarsh land in north Gower and subsequent impact on shellfish beds in the Burry inletAhmadian RFood Standards Agency£20,00001/06/2014 - 31/05/2015
Flood hazard indices and flood inundation extent for extreme flood eventsFalconer RA, Ahmadian REPSRC - Impact Acceleration Account£35,90601/03/2016 - 30/11/2016
Jamaica Bay Wetland Creations - Assistance with DIVAST ModellingFalconer RA, Ahmadian RBuro Happold£5,00001/12/13 - 30/11/14
Multiscale hydro-environmental modelling of marine renewable energy devicesFalconer RA, Ahmadian RHPC Wales - Fuijitsu£57,58301/10/2012 - 30/09/2015
Input and auditing UU regional costal modellingFalconer RA, Ahmadian RUnited Utilities Group£5,00021/03/2014 - 30/09/2014
QUOTIENT, quantification, optimisation and environmental impacts of marine renewable energyOdoherty D, Odoherty T, Mason-Jones A, Pan S, Stoesser T, Bockelmann-Evans B, Ahmadian A, Grosvenor R, Prickett P, Byrne CSer Cymru Bangor LCEE£61,00001/01/2015 - 30/06/2018
MAREN 2Bockelmann-Evans B, Falconer RA, Ahmadian REU INTERREG Atlantic Area£184,88801/03/2013 - 31/08/2014

Supervised Students

Assessment of performance of Sustainable Drainage Systems (SuDS)Nailah AltuwairgiCurrentPhD
Investigating transport of petroleum hydrocarbon in groundwater; Nigerian case studyDavidson Faleye CurrentPhD
Improved hydro-environmental modelling of renewable energy schemesNicolas HanousekCurrentPhD
Hydro-environmental Modelling of Wake Dynamics of Turbines and Sluices in Tidal Range SchemesCatherine LeechCurrentPhD
Modelling Impact and Design of Optimal Operation of River
Turbines on the Hydro-Environmental Characteristics
Bikash RanabhatCurrentPhD
Optimisation of tidal range schemesJingjing XueCurrentPhD
Modelling flood innundation and extent during extreme flood eventsGiovanni MusolinoCurrentPhD
Hydro-environmental modelling of tidal lagoonsBin GuoCurrentPhD
Water quality modelling in estuariesAmyrhul Bin Abu BakarGraduatedPhD
Characterisation of wave energy resourcesJoseph David ShuttleworthCurrentPhD

Modelling flood inundation extent, hazard mapping and pathpogens using high performance computing

Jonathan Auryn KingGraduatedPhD
Turbulence of flow through bridge openingsKen Vui ChuaGraduatedPhD
Modelling hydrodynamic, solute and sediment transport processes for marine renewable energy tidal range structuresNejc CozGraduatedPhD
Multiscale Hydro-environmental Modelling of Marine Renewable Energy Devices, with Particular Application to the Severn BarrageSamuel BrayGraduatedPhD


Current supervision

Bikash Ranabhat

Research student

Joseph Shuttleworth

Research student

Jingjing Xue

Research student

Bin Guo

Research student

Catherine Leech

Research student

Nejc Coz

Research student

Giovanni Musolino

Research student

Jonathan King

Research student

Amyrhul bin Abu bakar

Research student

Nicolas Hanousek

Research student