TY  - JOUR
PY  - 2023//
TI  - Study on the combustion, entrainment, and plume flow behaviors of annular pool fires
JO  - Environmental science and pollution research international
A1  - Huang, Ping
A1  - Zhang, Rui
A1  - Yu, Longxing
A1  - Liu, Chunxiang
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - Annular fire source is a common combustion form in fire accidents. Effects of D(in)/D(out) (the ratio of inner to outer diameters of the floating-roof tank) on the flame morphology and plume entrainment mechanisms of annular pool fires were studied by numerical simulation. <br><br>RESULTS show, as D(in)/D(out) increases, the area with low combustion intensity near the central axis of the pool surface gradually increases. Combined with the time-series HRR and the stoichiometric mixture fraction line of the fire plume, it reveals that the combustion of annular pool fire is dominated by non-premixed diffusion flame. The pressure near the pool outlet decreases with D(in)/D(out), while the plume turbulence presents an opposite trend. Based on the time-sequential plume flow and the gas-phase material distribution data, the flame merging mechanism of the annular pool fires is revealed. Furthermore, based on the similarity criterion, it verifies that the applicability of the above scaled simulation conclusions could also be extended to guide full-scale fires.<p />  <p>Language: en</p>
LA  - en
SN  - 0944-1344
UR  - http://dx.doi.org/10.1007/s11356-023-26748-1
ID  - ref1
ER  -