Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, Epiciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Abstract : The temperature field within evaporating ethanol droplets is investigated, relying on the two-color laser induced fluorescence (LIF) measurement technique and on a Direct Numerical Simulation (DNS). The configuration studied corresponds to a monodisperse droplet stream in a diffusion flame sustained by the droplet vapor. An experimental probe volume, small compared to the droplet size, is used to characterize the temperature field within the droplets, whereas DNS takes into account key aspects of the droplet heating and evaporation such as the non-uniform and transient stress, and the mass and heat transfer coefficients at the droplet surface. These investigations reveal that the frictional stresses are strongly reduced due to the small spacing between the droplets. They also show that the Marangoni effect has a significant influence on the internal motion and hence on the internal temperature field.
https://hal.univ-lorraine.fr/hal-01499162 Contributor : guillaume CastanetConnect in order to contact the contributor Submitted on : Friday, March 31, 2017 - 2:00:30 AM Last modification on : Tuesday, July 5, 2022 - 1:58:58 PM Long-term archiving on: : Saturday, July 1, 2017 - 12:22:31 PM
Guillaume Castanet, Bruno Frackowiak, Cameron Tropea, Fabrice Lemoine. Heat convection within evaporating droplets in strong aerodynamic interactions. International Journal of Heat and Mass Transfer, Elsevier, 2011, 54 (15-16), pp.3267-3276. ⟨10.1016/j.ijheatmasstransfer.2011.03.060⟩. ⟨hal-01499162⟩