Experimental study on virtual origins of buoyancy-controlled jet flames with sidewalls. (5th August 2016)

• Record Type: Journal Article
• Authors: Tao, C.F.; Shen, Y.; Zong, R.W.
• Is Part Of: Applied thermal engineering. Volume 106(2016:Aug.)
• Page Start: 1088
• Page End: 1093
• Publication Date: 2016-08-05
• Subjects: Virtual origin -- Heat release rate -- Jet flame -- Sidewall -- Froude number; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2016.06.072
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: Experiments of buoyancy-controlled jet flames are conducted with three walls. The virtual origin of jet flame increases with reducing the spaces of sidewalls. A global model is proposed for the virtual origin under semi-open space. 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 ∞ 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.