Numerical Simulation of Transient Development of Flame, Temperature and Velocity under Reduced Gravity in a Methane Air Diffusion Flame

A numerical methodology has been developed to solve a non-premixed diffusion flame under natural convection and applied to the calculation of the liquid sodium pool combustion experiment at various pool temperatures and oxygen concentrations. The computations reproduce the experimental observations concerning burning rate, flame temperature and flame height, consistently. The aerosol release rates are also in good agreement with the measurement. Dominant mechanisms of the mass and heat transfer are identified through the numerical simulation. An intrinsic feature is that the liquid sodium pool combustion is self-limited and negative feedback mechanism is at work Interaction among the thermal-hydraulics, chemical reaction and aerosol behavior plays an important role in the phenomena and it has been successfully analyzed by the numerical simulation. The present method can be used to understand sodium combustion phenomena and applied to the modeling of sodium pool combustion for safety analyses of liquid metal fast reactors. The numerical simulation is a useful tool because it can easily employ various conditions by changing parameters.

Download Full-text

A Transient Study on the Development of Temperature Field and Soot under Reduced Gravity in a Methane Air Diffusion Flame

Microgravity Science and Technology ◽

10.1007/s12217-018-9665-y ◽

2018 ◽

Vol 31 (1) ◽

pp. 13-29

Author(s):

Arup Jyoti Bhowal ◽

Bijan Kumar Mandal

Keyword(s):

Temperature Field ◽

Diffusion Flame ◽

Reduced Gravity ◽

Transient Study ◽

Air Diffusion

Download Full-text

Direct numerical simulation of a laminar diffusion flame established over a horizontal flat plate in micro-gravity environment

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:2001640 ◽

2001 ◽

Vol 11 (PR6) ◽

pp. Pr6-331-Pr6-338 ◽

Cited By ~ 1

Author(s):

H. Y. Wang ◽

P. Corderio ◽

P. Joulain

Keyword(s):

Numerical Simulation ◽

Direct Numerical Simulation ◽

Flat Plate ◽

Diffusion Flame ◽

Laminar Diffusion Flame ◽

Laminar Diffusion ◽

Micro Gravity

Download Full-text

Effects of radiation model on the modeling of a laminar coflow methane/air diffusion flame

Combustion and Flame ◽

10.1016/j.combustflame.2004.04.007 ◽

2004 ◽

Vol 138 (1-2) ◽

pp. 136-154 ◽

Cited By ~ 76

Author(s):

Fengshan Liu ◽

Hongsheng Guo ◽

Gregory J. Smallwood

Keyword(s):

Diffusion Flame ◽

Radiation Model ◽

Effects Of Radiation ◽

Air Diffusion

Download Full-text

The effect of diluent gases on ion formation in hydrocarbon flames

Canadian Journal of Chemistry ◽

10.1139/v78-374 ◽

1978 ◽

Vol 56 (17) ◽

pp. 2273-2277 ◽

Cited By ~ 4

Author(s):

Brenda L. Chawner ◽

Arthur T. Blades

Keyword(s):

Diffusion Flame ◽

Formation Process ◽

Hydrocarbon Flames ◽

Ion Formation ◽

Air Diffusion

It has been demonstrated that the addition of N2, CO, Ne, Ar, Kr, Xe, CO2, and CF4 to a H2-air diffusion flame containing He and traces of CH4 enhances the level of ion formation. This enhancement is proportional to the concentration of both CH4 and the diluent gas, consistent with the proposition that the diluent gas participates in the ion formation process.

Download Full-text