Observation of fluid flow changes at low velocities interval by adaptive photodetection

摘要

In this work a brief experimental investigation of velocity changes on a fluid flow by means of a non-contactive optical method based on the Non-steady-state photo-electromotive force (P-EMF) effect is presented. Evidence of linear dependence of P-EMF signal on fluid flow for low velocities as compared with a Laser Doppler Anemometry test is shown and discussed.