Visualization of a Small Jet Synthetic Using a Particle Image Velocimetry and Background-Oriented Schlieren Techniques

Abstract This work reports the results of experimental investigations carried out on a submerged synthetic jet obtained through use headset speaker piloted with an appropriate sinusoidal signal at frequency 380 Hz. The study begins construction device that, exploiting well-known transport properties impacting jets, was able to improve local ventilation and removal excess moisture, due natural transpiration human skin in people forced assume same position for prolonged periods such as professional drivers; bedridden patients; etc… Subjects are substantially have parts their own body contact fabrics coverings that hinder normal conditions transpiration. activity first based structure then moving creation sponge mat equipped 80 individual jets. On this mat, semi-empirical tests were order remove moisture from fabric soaked distilled water. using PIV technique, and, subsequently, visualized Background-Oriented Schlieren (BOS) technique which allowed test presence installed directly mattress, relatively simple fast way, requiring very simplified set-up.