Experimental investigation of radiation transmission through a water spray

Gilles Parent (1) , Pascal Boulet (1) , Ségolène Gauthier (1) , Jérôme Blaise (1) , Anthony Collin (1)

1 LEMTA - Laboratoire d'Energétique et Mécanique Théorique et Appliquée

Radiation attenuation by a water spray is experimentally investigated. Spectral transmissivity measurements are performed between 1000 and 7000 cm-1 with an experimental device involving a Fourier transform spectrometer. The spray is produced by a so-called Tee-Jet 400067 nozzle for water pressure between 1.5 and 6 bars. Key features like mean attenuation levels due to absorption and scattering by droplets and complex absorption pattern by water vapor are identified. Known effect of attenuation modification when increasing the water pressure is observed. A simulation is also performed to evaluate a numerical code developed in a companion study. The achieved agreement demonstrates the ability of the simulation to describe the radiation attenuation by the spray.

Mots clés: Transmissivity; absorption; radiative transfer; water spray; scattering

Domaines: Thermique [physics.class-ph]; Optique [physics.optics]

Gilles Parent, Pascal Boulet, Ségolène Gauthier, Jérôme Blaise, Anthony Collin. Experimental investigation of radiation transmission through a water spray. Journal of Quantitative Spectroscopy and Radiative Transfer, 2006, 97 (1), pp.126-141. ⟨10.1016/j.jqsrt.2004.12.030⟩. ⟨hal-00113722⟩