Macroturbulence measurements with electromagnetic and ultrasonic sensors: a comparison under high-turbulent flows

摘要: Experimental results of turbulent flows for both, field and laboratory tests are presented. The spatial temporal resolution is limited by the measuring instruments, which result in “filtering” out very small scales, thus observing only macroturbulence. experimental field-results have been obtained during large-scale surf zone experiments carried Ebro Delta, (Spain), under spilling/plunging breaking waves. field-measurements include several across with high vertical resolution. measured properties compared state-of-art macroturbulence characteristics length parameterisations. Furthermore, a detailed comparison two-dimensional electromagnetic three-dimensional ultrasonic velocity measurements has hydraulic jumps flume to validate study frequency response sensors.