ID#: 189
Abstract Title: Characterisation of Confined Turbulent Gas Explosions with Reference to Protection Methodologies
Session Title: Gas Explosions
Session Date: 7/30/01
Session Start Time: 11:20 AM
Contributing Author: Phylaktou, H.N.
Organization: University of Leeds
Country: U.K.
Authors: C.L. Gardner, H.N. Phylaktou, G.E. Andrews
Short Abstract: The application of empirical equations based on Kg values, recommended for gas explosion protection design, are limited to near zero turbulence conditions. In this study, we report explosion tests with methane, ethylene and hydrogen mixtures with air, under variable turbulence conditions in a standard ISO 1m3 vessel. The measured flame speeds, Kg values, and derived turbulent burning velocities are correlated to the levels of turbulence in the vessel, on the basis of published turbulence decay models for identical vessels. Linear dependence of the above parameters on u' is obtained in agreement with other published work, but it is shown that the quantitative correlations reported here and in the literature are wide ranging (in terms of the proportionality constants) and may not be applicable in a quantitative sense to any other system.