The 13th edition of ISUD - International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering - has been held at ETH Zürich and remotely - from the 13th to the 15th of June 2021.

As ISUD is the meeting for users and experts in the field of high resolution velocity profile measurement by use of ultrasound, we took this opportunity to announce the launch of two new products :

• UB-Lab P - the world first handheld UVP - a handheld profiler equipped with a Wifi connection and an internal battery in a compact enclosure
• 1 MHz wideband transducers - manufactured by Ubertone to improve quality, support and delivery times

We presented a laboratory measurement campaign on a physical model of a hydraulic structure, using these two product. The article: "Towards handheld UVP" by M. Burckbuchler and S. Fischer