15th International Symposium on Ultrasonic Doppler methods for fluid mechanics and fluid engineering, hosted by University of Grenoble Alpes (D. Hurther, LEGI) & EPFL (G. De Cesare, Pl-LCH) at Ecole de Physique des Houches
Modelling the transport by fluids of dissolved matter, solid particles, pollutants, natural sediments or gaz bubbles, remains nowadays a scientific challenging and technically complex research field, particularly in fully turbulent geophysical or industrial flows subject to unsolved two-phase or multi-phase flow interaction processes.

Doppler ultrasound methods offer process-oriented measurements in both transparent and opaque multi-phase flows over a wide range of flow scales extending from turbulent microscales to large bulk-flow scales. They have benefited over the past decade from the miniaturization of hardware tools, electronics, sensor technology, data storage units and from the constantly growing performance of embedded digital systems, digital signal processing methods, batterie autonomy as well as recent machine learning methods.
In this context, novel initiatives are regularly proposed by universities, national institutes, industrial R&D and engineering companies for the improvement of measurement performances of Doppler ultrasound methods in fluid mechanics, fluid engineering, river & coastal hydraulics, water sciences and physical oceanography. This event intends to stimulate exchanges between developers, users and experts of ultrasound flow measurement methods (known as ADV, ADVP, UVP, ADCP, ACVP, MFdopp, APFP, ABS,... technologies) in different communities by proposing a symposium on following topics :
Environmental flows
Multiphase flows
Hydrometry & flow metering
Complex fluids
Ultrasound signal processing & methods
Ultrasound scattering & spectrometry
Organizers
Dr. D. Hurther, Directeur de Recherche CNRS, U. Grenoble Alpes, France
Dr. G. De Cesare, Op. Director, PL-LCH, EPFL, Lausanne, Switzerland
Contact : isud-2026(A)legi.grenoble-inp.fr
Dates
3-7 May 2026
Venue
Ecole de Physique des Houches
149 Chemin de la Cote
74310 Les Houches
France
https://www.houches-school-physics.com/
Please note that the school has limited occupancy (registration date will serve as priority criterion)
Keynote speakers
Dr. J. Le Coz (INRAE Lyon, France)
Dr. G. Fromant (LISIC, ULCO, France)
Prof. I. Oshima (Tohoku Univ., Japan)
Registration fees
825 euros for students
950 euros for others
include :
+ Housing and food at Ecole de Physique des Houches
+ Technical visit, Boat trip & lunch on Lake Geneva (May 7)
+ Bus trip back to Geneva downtown or airport (May 7th around 5:30pm)
BUT arrival trip IS NOT included (see informations at https://www.houches-school-physics.com/practical-information/access/)
UBERTONE student award
First author students (with potential co-authors) can participate to the UBERTONE sponsored UBERTONE student award. The award committee (members of ISUD scientific committee) will select the best student contribution based on
+quality of extended abstract
+quality of oral presentation during the ISUD2026 symposium.
Recipient will be announced during the conference gala event.
Important dates
November 30th 2025 : deadline for abstract submission*
December 8th 2025 : abstract acceptance & registration opening
March 27th 2026 : deadline of extended abstract submission
April 10th 2026 : registration due
May 3-7 2026 : conference dates
*send a one page abstract (announcing your potential participation to the UBERTONE award competition) to isud-2026(A)legi.grenoble-inp.fr
Registration link (NOT YET OPEN !!! opens Dec. 8th 2025)
Please note that :
payment by American Express cards IS NOT POSSIBLE
for payment by intern. bank transfer, Name of conference (ISUD2026) and participant name must be specified in the transfer description field (because CNRS azur-colloques agency runs many conferences at the same time)
ISUD scientific committee
G. De Cesare, Chair, Ecole Polytechnique Federale Lausanne (EPFL), Switzerland
S. Eckert, Helmholtz-Zentrum Dresden-Rossendorf, Germany
S. Fischer, Ubertone, France
D. Hurther, Universite Grenoble Alpes-CNRS, LEGI, France
T. Ihara, Tokyo University of Marine Science and Technology, Japan
H. Kikura, Tokyo Institute of Technology, Japan
O. Mariette, Met-Flow, Switzerland
H. Murakawa, Kobe University, Japan
C. Rennie, University of Ottawa, Canada
Y. Tasaka, Hokkaido University, Japan
J. Wiklund, Incipientus Ultrasound Flow Technologies, Sweden
J. Windhab, Swiss Federal Institute of Technology Zurich (ETH), Switzerland




