Magnetocaloric anemometry. A novel concept for fluid flow measurement
Arias, Fr. J. Magnetocaloric Anemometry.pdf (1,330Mb) (Restricted access) Request copy
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Rights accessRestricted access - publisher's policy (embargoed until 2022-06-01)
Colloidal magnetic fluids (ferrofluids) and its significance with regard to fluid flow measurement is discussed. This concept -which can properly be called as magnetocaloric anemometry, blikewise than hot-wire anemometry takes advantage of the thermal dependence of the electrical resistance of some metals to measure the flow speed, it takes advantage of the thermal dependence of magnetization of superparamagnetic materials. Because the magnetic field is measured by Hall- sensors which are very sensitive to magnetic variations, and because the very small relaxation times of superparamagnetics materials upon variations of the magnetic field, therefore, magnetocaloric anemometers could offer a high sensibility and resolution fluid flow measurement matched only by hot wire anemometry but eliminating its handicaps, namely, high fragility, low durability and need for continuous maintenance which all in all translates into a high cost technology. The mathematical basis of the concept as well as first preliminary experimental data for magnetocaloric anemometry constitute the core of the present work. Additional R&D is required in order to arrive at a reliable practical design for magnetocaloric anemometers
CitationArias, F.J. Magnetocaloric anemometry. A novel concept for fluid flow measurement. "Journal of magnetism and magnetic materials", 1 Juny 2020, vol. 513, p. 167040:1-167040:7.
|Arias, Fr. J. Magnetocaloric Anemometry.pdf||1,330Mb||Restricted access|