Fields of expertise
- Flow Induced Noise & Vibration
- Fluid-Structure Interaction
- Flow instabilities in hydro turbines and pumps
- Condition monitoring of Hydraulic Machines
- Advanced Instrumentation in Fluid Dynamics
MissionHead of Research Group on Cavitation and Interface Phenomena
PhD Director, Lecturer
Member of EPFL Doctoral Committee (Mechanics)
EPFL Representative at CLUSER association
Coordinator at "Société Hydrotechnique de France (SHF)"
BiographyM. Farhat was born in Casablanca in 1962 (Moroccan citizen). He graduated at Ecole Nationale Supérieure d'Hydraulique et de Mécanique de Grenoble (France. He joined The LMH laboratory in 1986 as research assistant. He completed in 1994 a Ph.D. thesis on Cavitation. He joined the R&D department of Hydro-Quebec in Montréal (Canada) in 1995 where he was in charge of several research projects in the areas of production and transportation of hydropower and mainly the monitoring of large hydro turbines. Since 2001, he is senior scientist at the LMH laboratory, head of the cavitation group. He is also lecturer in Master and Doctoral programs. He is member of the Doctoral Committee in Mechanics.
Onset of Flow Separation Phenomenon in a Low-Specific Speed Centrifugal Pump ImpellerJournal Of Fluids Engineering-Transactions Of The Asme. 2023-02-01. DOI : 10.1115/1.4056213.
On the numerical simulation of a confined cavitating tip leakage vortex under geometrical and operational uncertaintiesComputers & Fluids. 2021-04-30. DOI : 10.1016/j.compfluid.2021.104881.
A review of cavitation in tip-leakage flow and its controlJournal Of Hydrodynamics. 2021-04-07. DOI : 10.1007/s42241-021-0022-z.
Effect of the winglet on reduction of blade tip vortex from elliptical hydrofoil2021-01-01. 30th IAHR Symposium on Hydraulic Machinery and Systems (IAHR), ELECTR NETWORK, Mar 21-26, 2021. p. 012054. DOI : 10.1088/1755-1315/774/1/012054.
A new Euler-Lagrangian cavitation model for tip-vortex cavitation with the effect of non-condensable gasInternational Journal Of Multiphase Flow. 2021-01-01. DOI : 10.1016/j.ijmultiphaseflow.2020.103441.
Suppressing tip-leakage vortex cavitation by overhanging groovesExperiments In Fluids. 2020-06-25. DOI : 10.1007/s00348-020-02996-6.
Hydrodynamic mechanisms of aggressive collapse events in leading edge cavitationJournal Of Hydrodynamics. 2020-02-01. DOI : 10.1007/s42241-020-0002-8.
Large eddy simulation of the tip-leakage cavitating flow with an insight on how cavitation influences vorticity and turbulenceApplied Mathematical Modelling. 2020-01-01. DOI : 10.1016/j.apm.2019.08.005.
Gravity-Independent Oscillate BoilingMicrogravity Science And Technology. 2019-12-01. DOI : 10.1007/s12217-019-09708-8.
Mitigating tip vortex cavitation by a flexible trailing threadPhysics Of Fluids. 2019-12-01. DOI : 10.1063/1.5126376.
Suppressing tip vortex cavitation by wingletsExperiments In Fluids. 2019-11-01. DOI : 10.1007/s00348-019-2809-z.
Numerical and experimental investigation of shedding mechanisms from leading-edge cavitationInternational Journal Of Multiphase Flow. 2019-10-01. DOI : 10.1016/j.ijmultiphaseflow.2019.06.010.
LES investigation of the influence of cavitation on flow patterns in a confined tip-leakage flowOcean Engineering. 2019-08-15. DOI : 10.1016/j.oceaneng.2019.106115.
On the physical mechanism of tip vortex cavitation hysteresisExperiments In Fluids. 2019-07-01. DOI : 10.1007/s00348-019-2762-x.
Cavitation induction by projectile impacting on a water jetInternational Journal Of Multiphase Flow. 2019-05-01. DOI : 10.1016/j.ijmultiphaseflow.2019.03.001.
Detailed experiments on weakly deformed cavitation bubblesExperiments In Fluids. 2019-02-01. DOI : 10.1007/s00348-019-2679-4.
High-speed imaging of high pressures produced by cavitation bubbles2019-01-01. 32nd International Congress on High-Speed Imaging and Photonics (ICHSIP), Enschede, NETHERLANDS, Oct 08-12, 2018. p. 1105103. DOI : 10.1117/12.2523259.
Neurovascular stent artifacts in 3D-TOF and 3D-PCMRI: Influence of stent design on flow measurementMagnetic Resonance In Medicine. 2019-01-01. DOI : 10.1002/mrm.27352.
Jetting from cavitation bubbles due to multiple shockwavesApplied Physics Letters. 2018-11-05. DOI : 10.1063/1.5060645.
Rebounds of deformed cavitation bubblesPhysical Review Fluids. 2018-10-16. DOI : 10.1103/PhysRevFluids.3.103604.
Luminescence from cavitation bubbles deformed in uniform pressure gradientsPhysical Review E. 2017. DOI : 10.1103/PhysRevE.96.033114.
Experimental mode shape determination of a cantilevered hydrofoil under different flow conditionsProceedings Of The Institution Of Mechanical Engineers Part C-Journal Of Mechanical Engineering Science. 2016. DOI : 10.1177/0954406215614335.
Geometrical deployment for braided stentMedical Image Analysis. 2016. DOI : 10.1016/j.media.2016.01.006.
Simulation of bubble expansion and collapse in the vicinity of a free surfacePhysics Of Fluids. 2016. DOI : 10.1063/1.4949354.
Numerical simulation of a collapsing bubble subject to gravityPhysics Of Fluids. 2016. DOI : 10.1063/1.4944561.
Signal analysis of an actively generated cavitation bubble in pressurized pipes for detection of wall stiffness dropsJournal of Fluids and Structures. 2016. DOI : 10.1016/j.jfluidstructs.2016.05.009.
Computational fluid dynamics with stents: quantitative comparison with particle image velocimetry for three commercial off the shelf intracranial stentsJournal Of Neurointerventional Surgery. 2016. DOI : 10.1136/neurintsurg-2014-011468.
Review of parameters influencing the structural response of a submerged body under cavitation conditions2015. 9th International Symposium on Cavitation (CAV), Ecole Polytechnique Federale Lausanne, Lausanne, SWITZERLAND, DEC 06-10, 2015. p. 012150. DOI : 10.1088/1742-6596/656/1/012150.
The inner world of a collapsing bubblePhysics Of Fluids. 2015. DOI : 10.1063/1.4931098.
Radial Shock Wave Devices Generate CavitationPlos One. 2015. DOI : 10.1371/journal.pone.0140541.
RANS and LES computations of the tip-leakage vortex for different gap widthsJournal Of Turbulence. 2015. DOI : 10.1080/14685248.2014.984068.
Hemodynamic transition driven by stent porosity in sidewall aneurysmsJournal Of Biomechanics. 2015. DOI : 10.1016/j.jbiomech.2015.02.020.
Boundary layer effects on the vortex shedding in a Donaldson-type hydrofoil2014. 27th IAHR Symposium on Hydraulic Machinery and Systems, Montréal, Canada, September 22-26, 2014. p. 1-6.
The detection of cavitation in hydraulic machines by use of ultrasonic signal analysis2014. 27th IAHR Symposium on Hydraulic Machinery and Systems, Montréal, Canada, September 22-26, 2014. p. 1-10.
Experimental Investigation of Pressure Fluctuations in a High-Energy Centrifugal Pump Stage at Off-Design Conditions2014. 12th European Fluid Machinery Congress, Edinburgh, UK, October 6-7, 2014. p. 10.
Particle Imaging Velocimetry Evaluation of Intracranial Stents in Sidewall Aneurysm: Hemodynamic Transition Related to the Stent DesignPlos One. 2014. DOI : 10.1371/journal.pone.0113762.
Non-intrusive detection of rotating stall in pump-turbinesMechanical Systems and Signal Processing. 2014. DOI : 10.1016/j.ymssp.2014.03.007.
Analysis of the dynamic response of pump-turbine runners- Part I: Experiment2012. 26th Symposium on Hydraulic Machinery and Systems, Beijing, China, August 19–23, 2012. p. 1-8.
Cavitation in impacted drops and jets and the effect on erosion damage thresholdsWear. 2012. DOI : 10.1016/j.wear.2012.03.006.
The Effects of a Tripped Turbulent Boundary Layer on Vortex Shedding from a Blunt Trailing Edge HydrofoilJournal Of Fluids Engineering-Transactions Of The Asme. 2012. DOI : 10.1115/1.4006700.
Analytical approximations for the collapse of an empty spherical bubblePhysical Review E. 2012. DOI : 10.1103/PhysRevE.85.066303.
Non-Intrusive Detection of Rotating-Stall Occurring in the Turbine Quadrant of Francis-Type Pump-TurbinesEAFIT University, 2012.
Bubbles in drops: from cavitation to exploding stars2011. 64th Annual Meeting of the APS Division of Fluid Dynamics, Baltimore, Maryland, USA, November 20–22, 2011.
Hydrodynamic stress in orbitally shaken bioreactors2011. p. P39. DOI : 10.1186/1753-6561-5-S8-P39.
The most spherical cavitation bubble2011. 64th Annual Meeting of the APS Division of Fluid Dynamics, Baltimore, Maryland, USA, November 20-22, 2011. p. 352.
Effect of Guide Vanes Cascade Vibrations on Pressure Mode Shape Arising from Rotor-Stator Interaction in Hydraulic Pump-TurbinesJournal of Fluid and Structures. 2011.
Confined shocks inside isolated liquid volumes: A new path of erosion?Physics of Fluids. 2011. DOI : 10.1063/1.3647583.
Universal Scaling Law for Jets of Collapsing BubblesPhysical Review Letters. 2011. DOI : 10.1103/PhysRevLett.107.204501.
Hydrodynamics of a Pump-Turbine at Off-Design Operating Conditions: Numerical Simulation2011. ASME-JSME-KSME Joint Fluids Engineering Conference 2011 - 7th International Symposium on Pumping Machinery, Hamamatsu, Japan, July 24-29, 2011. p. 495-506. DOI : 10.1115/AJK2011-06090.
Influence of the Pump-Turbine Guide Vanes Vibrations on the Pressure Fluctuations in the Rotor-Stator Vaneless Gap2011. 4th IAHR International Meeting on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Belgrade, Serbia, October 26-28, 2011.
Hydrodynamics of a Pump-Turbine Operating at Off-Design Conditions in Generating Mode: Experimental Investigation2011. SHF Conference on Cavitation and Hydraulic Machines, Lausanne, Switzerland, May 26-27, 2011.
Efficient and reproducible mammalian cell bioprocesses without probes and controllers?New biotechnology. 2011. DOI : 10.1016/j.nbt.2011.02.004.
Laser-induced cavitation bubble collapsing in the vicinity of the leading edge of a hydrofoil2010. 1st EPFL Doctoral Conference in Mechanics, Lausanne, Switzerland, February 19, 2010. p. 121-124.
L'Hydroptère: A story of a dream2010. 21st HISWA International Symposium on Yacht Design and Yacht Construction, Amsterdam, The Netherlands, November 15-16, 2010.
Experimental investigation of the vortex shedding dynamic in the wake of oblique and blunt trailing edge hydrofoils using PIV-POD method2010. 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions and Flow-Induced Vibration & Noise, Montreal, Canada, August 1-5, 2010. p. 149-154. DOI : 10.1115/FEDSM-ICNMM2010-30758.
Determination of a scale-up factor from mixing time studies in orbitally shaken bioreactorsBiochemical Engineering Journal. 2010. DOI : 10.1016/j.bej.2010.08.005.
L'HYDROPTERE: HOW MULTIDISCIPLINARY SCIENTIFIC RESEARCH MAY HELP BREAK THE SAILING SPEED RECORD2010. 2nd INTERNATIONAL CONFERENCE ON INNOVATION IN HIGH PERFORMANCE SAILING YACHTS (Innov'Sail), Lorient, France, June 30 - 1st July 1st, 2010.
Hydrodynamics of a Pump-Turbine under Off-Design Operating Conditions in Generating Mode2010. 1st EPFL Doctoral Conference in Mechanics, Lausanne, Switzerland, February 19, 2010. p. 111-114.
Advanced Instrumentation for Measuring Fluid-Structure Coupling Phenomena in the Guide Vanes Cascade of a Pump-Turbine Scale Model2010. ASME 2010 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration & Noise, Montreal, Québec, Canada, 1-5 August, 2010. p. 585-597. DOI : 10.1115/FEDSM-ICNMM2010-30693.
Dynamic of cavitation bubble in a flowing liquid with a pressure gradient2009. 62nd Annual Meeting of the APS Division of Fluid Dynamics, Minneapolis, Minnesota, USA, November 22-24, 2009. p. 36.
Vortex shedding from blunt and oblique trailing edge hydrofoils2009. 3rd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Brno, October 14-16, 2009. p. 245-252.
Hydrodynamic Damping Identification from an Impulse Response of a Vibrating Blade2009. 3rd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Brno, October 14-16, 2009. p. 253-260.
Experimental investigation of a pump-turbine at off-design operating conditions2009. 3rd International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Brno, Czech Republic, October 14-16, 2009. p. 339-347.
One-dimensional analysis of full load draft tube surge2008. 24th Symposium on Hydraulic Machinery and Systems, Foz do Iguassu, Brazil, October 27-31, 2008. p. 1-12.
CFD validation of pressure fluctuations in a pump turbine2008. HYDRO 2008, Ljubljana, Slovenia, 2008.
Cavitation Bubbles inside Spherical Water Drops in Microgravity2008. Cavitation: Turbo-machinery & Medical Applications WIMRC FORUM, Warwick University, UK, July 7-9 2008.
Hydro Elastic Behavior of Vibrating Blades2008. 24th Symposium on Hydraulic Machinery and Systems, Foz do Iguassu, Brazil, October 27-31, 2008. p. 10.
On Cavitation Bubbles and Their Interaction With a Free Surface2nd IAHR International Meeting on cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Timisoara, Romania, October 24-26, 2007.
Direct effects of gravity on cavitation bubble collapse2007. 58th International Astronautical Congress IAC, 2007.
2D Oscillating Hydrofoil2007. 2nd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Timisoara, Romania, 24-26 October 2007.
Unsteady CFD Prediction of von Kármán Vortex Shedding in Hydraulic Turbine Stay Vanes2007. Hydro 2007, Granada, Spain, 15-17 October 2007.
Hydrofoil Roughness Effects on von Kármán Vortex Shedding2007. 2nd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Timisoara, Romania, October 24 - 26, 2007.
Rotor-Stator Interaction Induced Pressure Fluctuations: CFD and Hydroacoustic Simulations in the Stationary Components of a Multistage Centrifugal Pump2007. FEDSM 2007, San Diego, July 30 - August 2, 2007.
Microgravity Experiment: Cavitation Studies Inside Water Drops57th International Astronautical Congress IAC, Valencia, Spain, 2006.
Secondary Cavitation and Shockwaves in Isolated Volumes2006. 57th International Astronautical Congress IAC, Valencia, Spain, 2006.
Pump-Turbine Rotor-Stator Interactions in Generating Mode: Pressure Fluctuation in Distributor Channel2006. 23rd IAHR Symposium on Hydraulic Machinery and Systems, Yokohama, Japan, October 17- 21, 2006. p. 1-10.
On the Dynamic of Cavitation Bubbles and Their Interaction with Solid and Free Surfaces2006. Sixth International Symposium on Advanced Fluid Information (invited paper), Chofu,Tokyo, October 26-27, 2006.
Cavitation monitoring of hydroturbines: tests in a Francis turbine model2006. Sixth International Symposium on Cavitation (CAV2006), Wageningen, The Netherlands, 2006.
Effect of cavitation on the structure of the boundary layer in the wake of a partial cavity2006. Sixth International Symposium on Cavitation (CAV2006), Wageningen, The Netherlands, 2006.
Interaction of a cavitation bubble with a spherical free surface2006. Sixth International Symposium on Cavitation (CAV2006), Wageningen, The Netherlands, 11-15 September 2006.
Cavitation in Kármán Vortices and Flow Induced Vibrations2006. International Symposium on Cavitation, CAV2006, Wageningen, The Netherlands, 11-15 September 2006.
Kármán vortex shedding in the wake of a 2D hydrofoil: Measurement and numerical simulation2006. IAHR Int. Meeting of WG on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Barcelona, 28-30 June 2006.
Water drops and cavitation bubbles in microgravity2005. 56th International Astronautical Congress IAC, Fukuoka, Japan, 2005.
CFD prediction of unsteady wicket gate-runner interaction in Francis turbines: A new standard hydraulic design procedure2005. HYDRO 2005 International Conference and Exhibition, Villach, Austria, 17-20 October 2005.
Experimental and Numerical Cavitation Flow Analysis of an Industrial Inducer2004. 22nd IAHR Symposium on Hydraulic Machinery and Systems, Stockholm, Sweden, June 29 – July 2, 2004. p. 1-10.
Cavitation Erosion Prediction in Hydro Turbines from Onboard Vibrations2004. 22nd IAHR Symposium on Hydraulic Machinery and Systems, Stockholm, Sweden, June 29 – July 2, 2004. p. 1-10.
Validation of Bucket Flow Simulation using Dynamic Pressure Measurements2004. 22nd IAHR Symposium on Hydraulic Machinery and Systems, Stockholm, Sweden, June 29 – July 2, 2004. p. 1-8.
Numerical Flow Analysis in a Pelton Turbine Bucket2004. 22nd IAHR Symposium on Hydraulic Machinery and Systems, Stockholm, Sweden, June 29 – July 2, 2004. p. 1-13.
Physical Modelling and Simulation of Leading Edge Cavitation : Application to an Industrial Inducer2003.
Cavitation et état de surface : une nouvelle analyse des mécanismes d'attache d'une cavité à une surface.2003.
Experimental Investigation of a Particular Traveling Bubble Cavitation2003.
Numerical Simulation of Leading Edge Cavitation over 2D Hydrofoil2002. 21st IAHR Symposium on Hydraulic Machinery and Systems, Lausanne, Switzerland, September 9 -12, 2002. p. 403-410.
Field Assessment of Cavitation Detection Methods in Hydropower Plants2002. 21st IAHR Symposium on Hydraulic Machinery and Systems, Lausanne, Switzerland, September 9 -12, 2002. p. 483-490.
The Leading Edge Cavitation Dynamics2002.
Onboard Measurements of Pressure and Strain Fluctuations in a Model of low Head Francis Turbine. Part 1 : Instrumentation2002. 21st IAHR Symposium on Hydraulic Machinery and Systems, Lausanne, Switzerland, September 9 -12, 2002. p. 865-872.
Pressure Fluctuation Measurements in Hydro Turbine Models2002.
Classification of Cavitation in Hydraulic Machines using Vibration Analysis2002. 21st IAHR Symposium on Hydraulic Machinery and Systems, Lausanne, Switzerland, September 9 -12, 2002. p. 475-482.
Onboard Measurements of Pressure and Strain Fluctuations in a Model of low Head Francis Turbine. Part 2 : Measurements and Preliminary Analysis Results2002. 21st IAHR Symposium on Hydraulic Machinery and Systems, Lausanne, Switzerland, September 9 -12, 2002. p. 873-880.
Physical Investigation of a Cavitation Vortex Collapse2001.
On the Detachment of a leading edge Cavitation2001.
Physical Investigation of the Cavitation Phenomenon2000. 6th Triennal International Symposium on Fluid Control, Measurement and Visualization, Sherbrooke, Québec, Canada, August 13-17, 2000.
On the Leading Edge Cavity Development of an Oscillating Hydrofoil2000.
Introduction to cavitationLausanne: IMHEF-LMH.
Stability margins of elongated plasmas in TCV and implications for ITER1999. 26th EPS Conference on Controlled Fusion and Plasma Physics.
The influence of flow unsteadiness on erosive cavity dynamics1999. 3rd ASME/JSME Joint Fluids Engineering Conference, San Francisco, California, USA, July 18-23, 1999.
Visualisation du collapse de cavités et sonoluminescence1999.
Improving Hydro Turbine Profitability by Monitoring Cavitation Aggressiveness1999.
Extending Repair Intervals of Hydro Turbines by Mitigating Cavitation Erosion1998.
Cavitation Erosion Prediction on Francis TurbinesHydropower & Dams. 1997.
The Hydrodynamic Aggressiveness of Cavitating Flows in Hydro Turbines1997. ASME Fluids Engineering Division Summer Meeting, Vancouver, Canada, June 22-26.
Some Hydro Quebec Experiences on the Vibratory Approach for Cavitation Monitoring1996. Modelling, Testing and Monitoring for Hydro Powerplants-II Conference and Exhibition, Lausanne, Switzerland, July 8-11. p. 151-161.
Quantification of Cavitation Aggressiveness in three different Devices using Accelerometers, DECER and Pit Measurements1994.
Contribution à l'étude de l'érosion de cavitation : mécanismes hydrodynamiques et prédictionLausanne: EPFL/LMH.
Vibratory Characteristics of Cavitation Erosion1994. Modelling, Testing and Monitoring for Hydro Powerplants, Budapest, Hungary, July 11-13, 1994.
Experimental flow study of the GAMM turbine model1993. GAMM Workshop, Lausanne, CH, September 13-15, 1989. p. 33-53.
Cavitation erosion power as a scaling factor for cavitation erosion of hydraulic machines1993. ASME Winter Annual Meeting, New Orleans, Louisiana, USA, November 28-December 3, 1993. p. 95-104.
Dynamic calibration of transient sensors by spark generated cavity1993.
Cavitation erosion, impact intensity and pit size distribution of jet and vortex cavitation1993. ASME Winter Annual Meeting, New Orleans, Louisiana, USA, November 28-December 3, 1993. p. 69-78.
Some effects of surface roughness on cavitation inception1992.
Pressions instationnaires générées par une poche de cavitation partielleLa Houille Blanche. 1992.
Cavitation erosion power1991. Cavitation'91, 1st ASME-JSME Fluid Engineering conference, Portland (Oregon), USA, 23-27 June, 1991. p. 135-140.
Flow survey and blade pressure measurements in a Francis turbine model1990. 15th IAHR Symposium on Modern Technology in Hydraulic Energy Production, Belgrade, Yugoslavia, September 11-14, 1990. p. Internal Flow 4, I5.
Shock pressure generated by cavitation vortex collapse1989. Third International Symposium on Cavitation Noise and Erosion in Fluid System, San Francisco, California, USA, December 10-15, 1989. p. 119-125.
Dynamique des cavités érosives : étude du collapse des vortex cavitants SHF, Paris, mars 19881988.
Teaching & PhD