An experimental study of vertical centreline temperature and velocity profile of buoyant plume in cubical compartment

Bhisham K. Dhurandher, Ravi Kumar, Amit K. Dhiman, Akhilesh Gupta, Pavan K. Sharma
2016 Journal of the Brazilian Society of Mechanical Sciences and Engineering  
Abbreviations Q Total heat release rate (kW) Q c Convective heat release rate (kW) U Centerline velocities (m/s) Z Height above fire source (m) T 0 Ambient temperature (K) ∆T Excess temperature above ambient, T − T 0 (K) ρ 0 Ambient air density (kg/m 3 ) g Acceleration due to gravity (m/s 2 ) c p Specific heat capacity (kJ/kg K) Abstract In a compartment fire, the plume temperatures and velocities are important parameters which are to be investigated. A proper understanding of behavior and
more » ... f behavior and temperature of the flame helps fire engineers and researchers deal with the fire situation. A series of four full scale steady state fire experiments were performed in a fire compartment of dimension 4 m × 4 m in plan and 4 m in height to study the vertical temperature profile of a flame. A pure grade of propane gas was supplied to a square burner of size 0.17 m × 0.17 m to create a steady state fire. The centerline vertical temperature rise of the buoyant plume was measured at seventeen different locations with the help of K-type thermocouples and was compared with several correlations available in the literature. The centerline velocities of buoyant plume were also measured and compared with various plume models. The prediction of Alpert [11] ) and Cox and Chitty [10]) model of plume temperature rise and centerline velocities were found to be closer to that of experimental values.
doi:10.1007/s40430-016-0629-0 fatcat:awiamd276vguzmcmjwkwjx7dbu