Recent developments in the measurement of convective heat transfer rates by laser interferometry

In this paper, a brief introduction is given to the principle of operation of both classical and holographic interferometers, which are commonly used for the measurement of convective heat transfer rates. Some of the optical considerations, as well as the limitations of this experimental technique are highlighted. With this background, some recent developments in laser interferometry are discussed for both two- and three-dimensional temperature fields, with an emphasis on techniques for measuring local convective heat flux rates.