Model scale tunnel tests with water spray

摘要: A model scale study (1:23) was carried out in order to improve the basic understanding of water spray systems longitudinal tunnel flow. The system consisted commercially available axial-flow hollow cone nozzles. Tests with both a deluge made 12 nozzles placed directly above fire source and curtain consisting four either downstream or upstream were out. wood crib used simulate source, which designed correspond HGV (heavy goods vehicle) load large scale. second as target pile ignited crib. parameters varied flow rate pressure, ventilation arrangement nozzle system. Possible spread between cribs, free distance corresponding 15 m scale, investigated.