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Proceedings Paper

Optoelectronic visualization and study of heat transfer from metal wires to water by a compact Schlieren system
Author(s): Adrian Petris; Dragos Popa; Angela Jianu; Carmen Popa; Valentin I. Vlad
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Paper Abstract

The aim of this paper is to present some results in the experimental study of heat transfer in fluids by optoelectronic methods. The thermal source was a thin metal wire (TMW) heated by electrical impulses and the propagation medium was the distilled water. We studied the following configurations for the thermal wave propagation and heat transfer. (1) Horizontal TMW far from the water tank walls; (2) Horizontal TMW in the proximity of a vertical metal wall and at a discontinuity introduced by another metal wire; (3) Horizontal TMW with a controlled air bubble flow. The phase perturbations in the transparent medium were visualized by a compact schlieren system with laser diode illumination and were digitally processed in a PC. These results offer a better understanding of some progressively complex thermohydrodynamic phenomena. Some possible applications are in visualization of the route to turbulence in these flows and in designing calibrated phase objects.

Paper Details

Date Published: 23 February 2000
PDF: 6 pages
Proc. SPIE 4068, SIOEL '99: Sixth Symposium on Optoelectronics, (23 February 2000); doi: 10.1117/12.378715
Show Author Affiliations
Adrian Petris, National Institute for Laser, Plasma and Radiation Physics (Romania)
Dragos Popa, Univ. Politehnica Bucharest (Romania)
Angela Jianu, National Institute for Laser, Plasma and Radiation Physics (Romania)
Carmen Popa, Univ. Politehnica Bucharest (Romania)
Valentin I. Vlad, National Institute for Laser, Plasma and Radiation Physics (Romania)

Published in SPIE Proceedings Vol. 4068:
SIOEL '99: Sixth Symposium on Optoelectronics
Teodor Necsoiu; Maria Robu; Dan C. Dumitras, Editor(s)

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