Experimental Measurement Benchmark for Compressible Fluidic Unsteady Jet

Experimental Measurement Benchmark for Compressible Fluidic Unsteady Jet

Blog Article

A benchmark of different measurement techniques is presented to characterize the dynamic response of a synthetic jet actuator working in compressible regime.The setup involves a piston-based synthetic jet, as well as the benchmarked measurements are hot-wire, cold-wire, Laser Doppler Anemometry, pressure transducer, and Schlieren visualization.Measured flow temperatures range from 20 °C to 150 °C, pressure ranges from 0.5 atm to 4 atm, and velocity are Ice Bucket up to 300 m/s.The extreme values of these ranges are reached in an oscillating fashion at a frequency ranging from 30 to 100 Hz.

The measurements are pointing out the limitation of cold-wire measurements, due to its high thermic inertia.The results show consistency in the velocity measurements, within 10% in the worst case, between all measurement techniques and the errors are traced back to the Shuffleboard calibration ranges, whose sensitivity is also studied.