The Institute for Hydraulic Research in Ljubljana was founded in 1937 at the University of Ljubljana. In 1954 it became an independent organisation, The Hydraulic Laboratory, and in 1995 it was reorganised as the Institute for Hydraulic Research. During all of it’s history the Institute for Hydraulic research has been successfully solving problems in many fields of hydraulic engineering in Slovenia and many countries abroad. It maintains close cooperation with the University of Ljubljana, especially with the Faculty of Civil and Geodetic Engineering, and cooperates in educational programmes for students, junior engineers and post-graduates.
The Institute for Hydraulic research occupies 1600 m2 of offices and laboratories, and 7500 m2 of open area, with a pressure station for tests of systems operating at pressures up to 1,5 bar (150 kPa) and with a discharge capacity up to 1200 l/s.
Physical Model Studies are still invaluable in designing and rehabilitating hydraulic structures, improving safety and reducing construction costs. The Institute disposes of a whole range of physical models, for example pipe systems under pressure, river diversion tunnels, weirs, spillways, stilling basins, power intakes and bottom outlets, gates, valves, hydraulic dissipating elements, harbour and marina structures, transport of matter and heat in open channel flow, local scour of river sediments, river engineering and training, influence of static and dynamic pressures on structures, cavitation and aeration, and vortex formation.
The Institute for Hydraulic Research also has lots of experience with mathematical models (sedimentation in reservoirs, discharge and flood routing, backwater profile calculations, unsteady ground-water flow, transport of matter and heat in open channel flow) and performs a range of field investigations, such as observation of vibration on movable (rubber) weirs, pressure and velocity measurements, measurements of sediment concentration and water temperature, monitoring reservoir sedimentation.
During the last years Institute for Hydraulic Research puts large efforts into introducing hybrid modelling into the Slovenian research and civil design practice. The present research projects indicate that these efforts are crowned with success.