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Numerical Simulation of Coaxial Swirled Lifted Propane-Air Flame under Buoyancy Conditions

by Guryanov, A I , Evdokimov, O A , Veretennikov, S V

in Air jets / Buoyancy / Burnout / Delay time / Differential equations / Flame propagation / Gas dynamics / Physics / Propane / Simulation / Surface area / Transport equations

2019

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Numerical Simulation of Coaxial Swirled Lifted Propane-Air Flame under Buoyancy Conditions

by Guryanov, A I , Evdokimov, O A , Veretennikov, S V

in Air jets / Buoyancy / Burnout / Delay time / Differential equations / Flame propagation / Gas dynamics / Physics / Propane / Simulation / Surface area / Transport equations

2019

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Numerical Simulation of Coaxial Swirled Lifted Propane-Air Flame under Buoyancy Conditions

by Guryanov, A I , Evdokimov, O A , Veretennikov, S V

in Air jets / Buoyancy / Burnout / Delay time / Differential equations / Flame propagation / Gas dynamics / Physics / Propane / Simulation / Surface area / Transport equations

2019

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Journal Article

Numerical Simulation of Coaxial Swirled Lifted Propane-Air Flame under Buoyancy Conditions

Guryanov, A I,

Evdokimov, O A,

Veretennikov, S V

2019

Overview

Numerical simulation of gas dynamics and combustion in coaxial swirled lifted propane-air jets under buoyancy conditions is performed. Dependences of dimensionless flame length L/d0, lift-off height h/d0 as well as flame front surface area Sfl and mass rate of burn-out U on orientation angle θ are obtained. The results of numerical simulation and experiment for different values of θ are compared. It is confirmed that in the angle range of 30° < θ < 60° flame has the smallest surface area that provides the highest value of the mass rate of burn-out. The numerical solution closest to an experiment data can be obtained by using an additional differential transport equation for the ignition time or setting a delay time in the range of 0.05..0.25 s.

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Publisher

IOP Publishing

Subject

Air jets

/ Buoyancy

/ Burnout

/ Delay time

/ Differential equations

/ Flame propagation

/ Gas dynamics