Welcome to the 20th International Symposium on Flow Visualization (ISFV 2023) to be held at Delft University of Technology in The Netherlands on 10-13 July, 2023. The event is co-sponsored by the Visualization Society of Japan. The symposium is organized by the Aerodynamics Group at the Faculty of Aerospace Engineering of TU Delft.

Under the patronage of the Turkish Ministry of Defense, the International Defense Industry Fair (IDEF) takes place every two years at the Tüyap Fair Convention & Congress Center in Istanbul, now ranking as the fifth-largest defense trade show worldwide.