Abstract
Wave motion in subway or tunnel fire is an intrinsic property of smoke. As the pressure of smoke changes with mass of certain power, a kind of linear wave equation for smoke can be derived from the conservation equations of its mass and momentum, under nearly homogeneous zone assumption. The smoke movement of 4 subway fires was simulated with Airpak. By fitting the pressure-mass functions to the simulated data, wave equations of the smoke were derived, and wave motions of smoke were thus validated. It can be seen that smoke wave is a kind of mass wave, whose velocity is inversely proportional to smoke mass, and wave of a bigger fire propagates slower.
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WU Wenzhong, born in 1968, male, doctorate student, engineer.
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Wu, W., You, S. Wave motion of smoke in subway fire environment. Trans. Tianjin Univ. 15, 206–209 (2009). https://doi.org/10.1007/s12209-009-0036-z
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DOI: https://doi.org/10.1007/s12209-009-0036-z