Measurements of temperature profiles in gases by laser beam deflection
نویسندگان
چکیده
2014 The determination of temperature profiles in gases is based on the light beam deflection due to the refractive index gradient induced by a temperature gradient at constant pressure. The geometry considered for the system is a cylinder of arbitrary section characterized by isothermal generative lines. A parameter estimation method and a parabolical trajectory method are considered to treat experimental data. The measurement technique is then applied to laminar natural convection flow along a vertical, isothermal surface in air. The determined temperature profiles agree with classical literature results within 2 %. This agreement qualifies our measurement method. Revue Phys. Appl. 24 (1989) 401-410 MARS 1989, Classification Physics Abstracts 06.30 07.20D 07.60 47.25Q
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