Simulation and testing of a MEMS calorimetric shear-stress sensor

Periodic forcing of a large turbulent separation bubble

“…The forward-flow fraction , defined as the percentage of time that the near-wall flow goes in the main, positive streamwise direction, was measured with the microelectromechanical system (MEMS) calorimetric shear-stress sensor introduced by Weiss et al. (2017). This sensor features three parallel micro-beams suspended over a small cavity.…”

Measurements of pressure and velocity fluctuations in a family of turbulent separation bubbles

“…Necessary corrections of the fluctuating pressure data to remove the low-frequency facility noise caused by small mass-flow fluctuations from the flow mover were made by applying the noise-correction method of Weiss et al (2015), which consists in removing the part of the signal that is coherent with the noise measured near the entrance of the test section. The forward-flow fraction , defined as the percentage of time that the near-wall flow goes in the main, positive streamwise direction, was measured with the MEMS calorimetric shear-stress sensor introduced by Weiss et al (2017). The uncertainty in was estimated at based on a comparison with the classical thermal-tuft probe of Schwaab & Weiss (2015).…”

Modelling the decay of finite-span starting and stopping wall jets in an external stream

“…For further information on the function principle and calibration procedure of the sensors, the interested reader is referred to articles by Weiss et al. (2017 a , b , 2022). Samples were acquired at a frequency of for a duration of in the case of steady wall jets.…”