Research and development


  • environmental flows
  • tides · wind-driven circulation · storm surges · effluent mixing
  • computational hydraulics
  • modelling fully 3D motions in bodies with a free surface
  • computational hydraulics
  • turbulent particle dispersion
  • flow solvers
  • verification and validation
  • quantitative error assessments · comparison with/of experimental data


  • comparison and critique of experimental/observational data sets
  • scientific computing
  • quantitative accuracy assessments
  • scoping studies and ‘no-regret’ investigations


  • articles in peer-reviewed publications
  • original research and state-of-the-art reviews
  • grey literature
  • briefings and reports
  • software programmes
  • code development, implementation, execution, translation

In the spotlight

  • The project Viability study of a prototype windstorm for the Wadden Sea surges of 2009 led to revising the official methods to calculate storm loads on flood defences in the Netherlands (in the context of the Wettelijk Toetsinstrumentarium 2011)
  • The multi-year research project Modelling studies of sediment deposition from waste-water discharges in the marine environment (2003-2006) resulted in a publication awarded with the 2010 Karl Emil Hilgard Hydraulic Prize by the American Society of Civil Engineers. Moreover, it led to a review paper where a supposedly die-hard numerical modeller critiques 30 years of experimental data for turbulent jets

Research and development track record

2016 | Porting Matlab® hydrodynamic software into Python

Watermotion ported the client’s pieces of scientific software from Matlab® into Python. The product code in the open-source language Python precisely calculates the same results as the client’s original code in Matlab®. The product code also is Py2/3 compatible and follows the PEP8 style guidelines. Object-oriented programming enhances batch-mode operations, handling customized input formats, ease of use and development

related : Testimonial of S. Hulst · Competencies | languages

2015 | D-Flow Flexible Mesh: skill evaluation for storm surges simulations

Watermotion is a pilot user of D-Flow Flexible Mesh, the next-generation flow modelling tool launched by Deltares in Sept 2015. Meshing with cells of arbitrary form distinguishes it from the flagship model Delft3D. The collaboration with the Software Development Group focussed on the quantitative accuracy assessment for storm tide simulations. Watermotion presented the research progress at the Delft Software Days 2014 and 2015 and has provided two sections for the validation document (release pending)

2015 | ADCIRC: feasibility of pilot flow simulations

A collaborative project with BMT Argoss, NL. It aimed to assess the potential of the widely-used flow model ADCIRC for integrated application with other BMT Argoss weather and wave models. Watermotion contributed its expertise in CFD and coastal modelling. ADCIRC (for ADvanced CIRCulation model) has been in development by a US research consortium since 1994

related : Testimonial of F. Enet

2009 | Viability study of a prototype windstorm for the Wadden Sea surges

To assess the dike-safety criteria this study explored aimed simplifications of the storms causing severe surges in the Wadden Sea. Hundreds of synthetic wind fields were obtained by progressively depriving the real wind fields of the space- and time- variability in speed and direction. The artificial surges thus calculated showed that no simplification could approximate the severity of the real surges, suggesting a strong specificity of the storms hazarding the coastal defences in the Wadden Sea | A project conducted at Alkyon Hydraulic Research & Consultancy, NL | The heading links to a poster for the 2010 Storm Surges Congress

related : Testimonial of J. Groeneweg · Competencies | publications and awards

2003-6 | Modelling studies of sediment deposition from waste-water discharges in the marine environment

Multi-year joint research project between the University of Dundee (experiments) and the University of Manchester (CFD simulations), funded by EPSRC. As a post-doctoral assistant at the University of Manchester, GL was responsible for the calibration of the in-house research flow solver STREAM and the development of the numerical particle tracking algorithm that simulated the particle dispersion in a jet. The article summarizing the joint results was awarded by the American Society of Civil Engineers in 2010. This study also resulted in a review paper on experimental data on turbulent jets

related : Competencies | publications and awards

2002–3 | Internal diffuser hydraulics

Impromptu collaboration with the staff of the Institute for Hydromechanics at the University of Karlsruhe (now KIT) concerning the partition of the flow across multiple outlets in diffusers of sea outfalls. The study underpinned the attending module of the dispersion model CORMIX. The research stay was part-funded by DAAD and took place during the Ph.D. studies at the University Federico II of Naples | The heading links to the resulting joint publication. In memoriam G.H. Jirka

related : Competencies | publications and awards

1999–2003 | Numerical simulation of wind-induced motion fields in natural bodies of water

Research project at the University of Palermo, funded by the Ministry for University and Research, carried out as Ph.D. student and as Research Assistant. GL worked on the simulation, verification, validation and implementation of the free-surface motion into the in-house CFD solver. The investigations of physical systems concerned simulations for the wind-driven circulation in gulfs and lakes. The further-developed code is known as PANORMUS and is a open-source software

related : Competencies | publications and awards

More track records

< overview
> case studies
> marketing
> outreach


A feedback on your viewing experience with this website is invaluable to Watermotion
Please take part in this anonymous >survey form (no mandatory questions)

Back to >top
Last edited March 2017 · authored by Giordano Lipari