An experimental and numerical study into turbulent condensing steam jets in air

S. Oerlemans, R. Badie, M.E.H. Dongen, van

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    4 Citations (Scopus)
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    Abstract

    Temperatures, velocities, and droplet sizes are measured in turbulent condensing steam jets produced by a facial sauna, for varying nozzle diameters and varying initial velocities (Re=3,600–9,200). The release of latent heat due to droplet condensation causes the temperature in the two-phase jet to be significantly higher than in a single-phase jet. At some distance from the nozzle, droplets reach a maximum size and start to evaporate again, which results in a change in sign of latent heat release. The distance of maximum size is determined from droplet size measurements. The experimental results are compared with semi-analytical expressions and with a fully coupled numerical model of the turbulent condensing steam jet. The increase in centreline temperature due to droplet condensation is successfully predicted.
    Original languageEnglish
    Pages (from-to)74-83
    JournalExperiments in Fluids
    Volume31
    Issue number1
    DOIs
    Publication statusPublished - 2001

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