C. F. Tao, Y. Shen and R. W. Zong (2016) Experimental study on virtual origins of buoyancy-controlled jet flames with sidewalls. Journal/Applied Thermal Engineering 106 1088-1093. [In English]
Web link: http://dx.doi.org/10.1016/j.applthermaleng.2016.06.072
Keywords: Virtual origin; Heat release rate; Jet flame; Sidewall; Froude number; TEMPERATURE PROFILE; SPILL PLUME; DIFFUSION FLAMES; FIRE; HYDROGEN; HEIGHT; LENGTH

Abstract: Virtual origin is an important factor to investigate the temperature distribution of fire plume. The virtual origin of buoyancy-control jet flames with sidewalls has been investigated with the experiments under different spaces of sidewalls (L = 15, 20, 30, 40, 60, 80, and infinity cm) and different sizes of nozzle (d = 0.6 cm and 1.0 cm). It is found that the virtual origin of buoyancy-controlled jet flame increases with reducing the spaces of sidewalls, and it increases with increasing the heat release rate. A global model has been proposed to estimate the virtual origin of jet flames under a semi-open space with different spaces of sidewalls. These results and correlations are new and a significant improvement over previous results in the literature. (C) 2016 Elsevier Ltd. All rights reserved.