Study on Predicting Maximum Temperature Characteristics of Ceiling Jet Flow During Corridor Fires

In this study, the methods using numerical simulations and correlations were explored to predict the maximum temperature characteristics of ceiling jet flows during corridor fires. Numerical simulations were conducted for Case-A (fire source located at the center of the corridor with both ends open) and Case-B (fire source located at the side of the corridor with the near-end opening closed and the far-end opening open) under various heat release rates and corridor widths. The mass flow rates, maximum temperatures, and maximum temperature locations of ceiling jet flows were examined. A comparison of the numerical simulation results with previous experimental data showed that the bias factor and relative standard deviation were 0.82 and 0.05, respectively, for the maximum temperature, and 1.02 and 0.01, respectively, for maximum temperature location. Furthermore, modified correlations for predicting the maximum temperatures of ceiling jet flows were proposed based on previous experimental data. For the modified correlations, the mean percentage error (MPE) and mean absolute percentage error (MAPE) were 12% and 19%, respectively, for Case-A, and 2% and 3%, respectively, for Case-B.