Numerical Simulation on the Evolution of Compartment Fire with the Air Curtain Jet Condition

2019 ◽  
Author(s):  
Zichang Wang ◽  
Kaihua Lu ◽  
Yanming Ding ◽  
Jie Wang ◽  
Shaohua Mao
Keyword(s):  
Numerical Simulation ◽  
Compartment Fire ◽  
Air Curtain

Numerical Simulation and Analysis of Compartment Fire in Subway Train

2012 ◽  
Vol 166-169 ◽  
pp. 2726-2730
Author(s):  
Bo Si Zhang ◽  
Shou Xiang Lu
Keyword(s):  
Numerical Simulation ◽  
Transport System ◽  
Fire Safety ◽  
Urban Transport ◽  
The Other ◽  
Compartment Fire ◽  
Fire Simulation ◽  
Subway Train ◽  
Simulation Time

Subway plays an important role in urban transport system. Fire as the major risk of the subway, is gaining increasing concern. In this study, fire simulation is performed to estimate fire safety of different compartments of the subway train. Result shows that the two compartments in the middle become dangerous at 150s and the compartments in the two ends are not safe at 300s approximately. The other two compartments are always safe during the simulation time.

Numerical Simulation Study on Air-Flow Migration Law about Vortex Air Curtain of Plane Wall Fan Drum

2012 ◽  
Vol 241-244 ◽  
pp. 1285-1292
Author(s):  
Gang Zhou ◽  
Sen Cao ◽  
De Ming Wang ◽  
Wei Min Cheng ◽  
Wen Nie
Keyword(s):  
Numerical Simulation ◽  
Control System ◽  
Simple Algorithm ◽  
Plane Wall ◽  
Dust Control ◽  
High Concentration ◽  
Air Curtain ◽  
Working Face ◽  
Simulation Results ◽  
Migration Law

Vortex air curtain of plane wall fan drum can control the diffusion of air stripping dust effectively. In order to solve the high-concentration dust problem in fully mechanized excavation face, formation mechanism of vortex air curtain was analyzed. According to fluid mechanical control equations of gas phase flow, mathematical model was established to solve air migration law of vortex air curtain in fully mechanized excavation face. By using Simple algorithm based on collocated grid and fluent software, numerical simulation of air spatial migration law of closed-end dust control in fully mechanized excavation face was carried out. The simulation results show that vortex air curtain dust control system can form dust control fan drum along driving head to the front of the roadheader driver. According to the simulation results and actual conditions of working face field, vortex air curtain suction dust control system consisted of plane wall fan drum and exhausted dust purification device in fully mechanized excavation face was designed, and after it was applied in fully mechanized excavation face, the dust concentration decreased effectively in the working face field.

Numerical Simulation of Air Curtain Used in the Cold Store through Different Models

2013 ◽  
Vol 749 ◽  
pp. 554-560
Author(s):  
Jing Xie ◽  
Chen Miao ◽  
Zhi Li Gao ◽  
Jian Bing Shi ◽  
Tai Wang
Keyword(s):  
Numerical Simulation ◽  
Temperature Field ◽  
Flow Field ◽  
Numerical Models ◽  
Air Flow ◽  
Boussinesq Approximation ◽  
Optimal Model ◽  
Air Curtain ◽  
Cold Store ◽  
Operation Rule

Air curtains are commonly used to cut off air flow between the cold store and hot environment, and reduce heat and mass transfer in order to maintain the low temperature in the cold store. CFD can be used to predict operation rule of air curtain used in the cold store intuitively and modelling is the most important part of numerical simulation of air curtain used in the cold store. In this study, different numerical models including standardmodel (with and without boussinesq approximation) and RSM (with and without boussinesq approximation) were used to simulate the temperature field and air flow field in the cold store and operation rule of air curtain used in the cold store after air curtain opened for 60s. Meanwhile, the actual operation of air curtain used in the cold store was tested and the simulation values were compared with the experimental values. The results showed that the velocity of the central mainstream decayed slowly, but the velocity of both sides of air curtain decayed fast. The optimal model used to predict the temperature field and air flow field in the cold store and operation rule of air curtain used in the cold store was standardmodel with boussinesq approximation, the relative error was within 20%. The optimal model can be used to predict the temperature field and air flow field in the cold store during different times in the future research.

Numerical Simulation of Temperature Profile in a Compartment Fire with a Roof Opening

2012 ◽  
Vol 538-541 ◽  
pp. 989-992 ◽  
Author(s):  
Jin Mei Li ◽  
Qiang Li ◽  
Yan Lei Dong ◽  
Chang Hai Li
Keyword(s):  
Numerical Simulation ◽  
Numerical Simulations ◽  
Temperature Profile ◽  
Source Size ◽  
Temperature Profiles ◽  
Compartment Fire ◽  
Gas Temperature ◽  
Fire Source ◽  
Smoke Layer ◽  
Cooling Function

Fifteen numerical simulations are presented in this article to investigate the influence of roof opening size and fire source size on gas temperature profiles in a compartment. The fire source size has a significant impact on the temperature hot smoke layer. The temperature of hot smoke layer increases as the increase of fire source size. The roof opening has cooling function to gas temperature in the compartment especially for large roof opening. The temperatures of hot smoke layer decrease with the roof opening size increase in all cases.

scholarly journals Numerical Simulation of Early Stage of a Compartment Fire

1984 ◽  
Vol 4 (2) ◽  
pp. 91-110 ◽  
Author(s):  
Takashi Handa ◽  
Kunio Kawagoe ◽  
Tomoaki Yoshikawa ◽  
Junji Mashige ◽  
Tomoko Joh
Keyword(s):  
Numerical Simulation ◽  
Early Stage ◽  
Compartment Fire

Assessment of Numerical Simulation Capabilities of the Fire Dynamics Simulator (FDS 6) for Planar Air Curtain Flows

2018 ◽  
Vol 54 (3) ◽  
pp. 583-612 ◽  
Author(s):  
Long-Xing Yu ◽  
Tarek Beji ◽  
Georgios Maragkos ◽  
Fang Liu ◽  
Miao-Cheng Weng ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Fire Dynamics ◽  
Air Curtain ◽  
Fire Dynamics Simulator
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