David Ferras

Lecturer in Water Supply Engineering

Biography

BSc degree in Civil Engineering from the Polytechnic University of Catalonia, Spain (2006). MSc EuroAquae  specializing in Hydroinformatics and Water Management (2012) from an Erasmus+ program composed by a consortium of Universities (University of Nice - Sophia; Brandenburg University of Technology Cottbus; Budapest University of Technology and Economics; Technical University of Catalonia; Newcastle University). PhD in Civil Engineering (2016) from a joint doctoral initiative between Polytechnic School of Lausanne and Technical University of Lisbon, focused on the experimental and numerical modelling of hydraulic transients in pressurized flow.

Dr Ferras has five years of working experience (2005-2010) in a water utility company, where he was involved in master planning projects. After his PhD, he carried out a one year Postdoc at Trinity College Dublin (TCD). During this stage, he dealt with the Water-Energy Nexus in water supply engineering. Currently, Dr Ferras holds a Lecturer-Researcher position in the department of Environmental Engineering and Water Technology, IHE-Delft, in the field of Water Transport and Distribution.

ResearchGate

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Research Summary

Dr Ferras PhD research made a significant contribution towards the improvement of one-dimensional (1D) waterhammer modelling in the time-domain by means of the well-known method of characteristics. He identified, described and quantified, experimentally and numerically, the principal mechanic-hydraulic relationships during hydraulic transients in pressurized pipe flows in view of better design criteria and, consequently, reducing risk of failure. Dr Ferras gave a new perspective regarding the theoretical background of FSI 1D modelling by means of a novel classification based on pipe degrees-of-freedom and suggesting an original standpoint for tackling FSI problems. In his Postdoc stage Dr Ferras applied his previous developments into the field of water supply (Water-Energy Nexus), aiming at protecting pipe networks against undesired hydraulic transients.

Currently, Dr Ferras continues challenged by the development of advanced tools for the modelling of hydraulic transients in water distribution networks. He finds in Intermittent Water Supply a unique and novel opportunity for fundamental and applied research with high social impact. 

Publications

D. Ferras, P. Manso, D. Covas, A.J. Schleiss. Fluid-structure interaction in straight pipelines anchored against longitudinal movement. Journal of Sound and Vibration, 2017.

D. Ferras, P. Manso, D. Covas, A.J. Schleiss. Fluid-structure interaction in pipe coils during hydraulic transients. Journal of Hydraulic Research, 2017. 

D. Ferras. Fluid-structure interaction during hydraulic transients in pressurized pipes: experimental and numerical analyses. No. EPFL-BOOK-226679. EPFL-LCH, 2016.

D. Ferras, P. Manso, D. Covas, A.J. Schleiss. Fluid-structure interaction in straight pipelines: friction coupling mechanisms. Journal of Computers and Structures, 2016.

D. Ferras, P. Manso, D. Covas, A.J. Schleiss. Experimental evidence of damping mechanisms during hydraulic transients in pipe flow. Journal of Fluids and Structures, 2016.

D. Ferras, P. Manso, D. Covas, A.J. Schleiss. Hydraulic transients in straight and coil pipe rigs. Proc. of 12th International Conference on Pressure Surges, Dublin 2015.

D. Ferras. Fluid-structure interaction in pipe coils during hydraulic transients: numerical and experimental analysis. Proc. of 36th IAHR World Congress, The Hague 2015.

D. Ferras, D. Covas, A.J. Schleiss. Stress-strain analysis of a toric pipe for inner pressure loads. Journal of Fluids and Structures, 2014.

T. Cohen Liechti, J. Matos, D. Ferras, J.L. Boillat and A.J. Schleiss. Hydrological modelling of the Zambezi River Basin taking into account floodplain behaviour by a modified reservoir approach. International Journal of River Basin Management, 2014.

D. Ferras, D. Covas, A.J. Schleiss. Stress-strain analysis of a coiled copper pipe for inner pressure loads. Proc. of 3rd IAHR Europe Congress: Water Engineering and Research, Porto, 2014.

Other information

Dr Ferras is an active member of the International Association for Hydro-Environment Engineering and Research (IAHR), where he contributes as editor of the digital monthly publication Newsflash World. On 2015 he was awarded by the same association with the John F. Kennedy award issued during the 36th IAHR World Congress, The Hague.

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