Alternative high resolution sensor to hot-wire and hot-film anemometer

Transient thermal response of a hot-wire anemometer

The ability of a thermal anemometry system to accurately measure unsteady fluid velocity depends on the electrical control system as well as the thermal properties of the sensor. The present work is a numerical study of the thermal transient response of a hot-wire. A conventional constant temperature anemometer with an ideal feedback amplifier as well as a pulse width modulated system were used...

The Hot - wire Anemometer for Turbulence Measurements part III

Hot-film anemometer velocity measurements of arterial blood flow horses.

Blood velocity measurements were carried out using a constant-temperature hot-film anemometer system in both anesthetized and conscious horses. Catheter probes were used to measure velocity wave forms in conscious horses and L-shaped needle probes inserted by direct vessel puncture were used to measure the profiles in regions of the thoracic and abdominal aorta of anesthetized, open-chest horse...

Optimization of Single-Sensor Two-State Hot-Wire Anemometer Transmission Bandwidth

Hot-wire anemometric measurements of non-isothermal flows require the use of thermal compensation or correction circuitry. One possible solution is a two-state hot-wire anemometer that uses the cyclically changing heating level of a single sensor. The area in which flow velocity and fluid temperature can be measured is limited by the dimensions of the sensor's active element. The system is desi...

Thin-Film Transistors Obtained by Hot Wire CVD

(1) Departament d'Enginyeria Electrònica. Jordi Girona 1-3, Mòdul C4. Universitat Politècnica de Catalunya (Barcelona, Spain). (2) Departament d'Enginyeria Electrònica. Universitat Rovira i Virgili (Tarragona, Spain). (3) Departament de Física Aplicada i Òptica. Universitat de Barcelona (Barcelona, Spain) Abstract Hydrogenated microcrystalline silicon films obtained at low temperature (150oC-28...