Experimental characterisation of sprays resulting from impacts of liquid-containing projectiles

Simo Hostikka (Corresponding Author), Ari Silde, Topi Sikanen, Ari Vepsä, Antti Paajanen, Markus Honkanen

    Research output: Contribution to journalArticleScientificpeer-review

    10 Citations (Scopus)


    Modelling and analysing fires following aircraft impacts requires information about the behaviour of liquid fuel. In this study, we investigated sprays resulting from the impacts of water-filled metal projectiles on a hard wall. The weights of the projectiles were in the range of 38-110 kg, with 8.6-68 kg water, and the impact speeds varied between 96 and 169 m/s. The overall spray behaviour was observed with high-speed video cameras. Ultra-high-speed cameras were used in backlight configuration for measuring the droplet size and velocity distributions. The results indicate that the liquid leaves the impact position as a thin sheet of spray in a direction perpendicular to the projectile velocity. The initial spray speeds were 1.5-2.5 times the impact speed, and the Sauter mean diameters were in the 147-344 ?m range. This data can be used as boundary conditions in CFD fire analyses, considering the two-phase fuel flow. The overall spray observations, including the spray deceleration rate, can be used for validating the model.
    Original languageEnglish
    Pages (from-to)388-402
    JournalNuclear Engineering and Design
    Publication statusPublished - 2015
    MoE publication typeA1 Journal article-refereed


    Dive into the research topics of 'Experimental characterisation of sprays resulting from impacts of liquid-containing projectiles'. Together they form a unique fingerprint.

    Cite this