Preface

The 30 th IAHR Symposium on Hydraulic Machinery and Systems (IAHR2020) was held virtually between March 21-26, 2021, and organized by École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland. EPFL is one of the two Swiss Federal Institutes of Technology. With the status of a federal institute since 1969, the young engineering school has grown in many dimensions, to the extent of becoming one of the most famous European institutions of science and technology. Like its sister institution in Zurich, ETHZ, it has three core missions: training, research and technology transfer. Associated with the four specialised research institutes, the two Institutes of Technology form the ETH/EPF domain, which is directly dependent on the Federal Department of Economic Affairs, Education and Research (EAER). EPFL counts some 6,000 employees and 1,500 academic visitors per year who work at our five schools, two colleges, 28 institutes, 354 laboratories and sites in five cantons and who span over a hundred different professions (professors, secretaries, PhD researchers, lab technicians, tech support staff, etc.). List of About the conference, Conference themes, Conference Sessions, Organizing Committee, Executive Committee, Scientific Committee are available in this pdf.