COMBUSTION of FUEL-DROPLET FLOWS

with ACCOUNT OF RADIATION and SOOT FORMATION

 

A new semi-analytical numerical scheme is developed for simulation of soot formation. A preconditioning approach is suggested in solving radiation equations. Both problems are mathematically stiff.

Boundary conditions for k-ε are developed for the problem of fuel release to the atmosphere. No free parameters are used in the statement of the boundary value problem.

 

temp22

temp2_hs

Fireball. Temperature. M0= 110 kg, tin= 1.45s (afterburning).  Dotted line is a visible fireball boundary. Dashed line is an experiment (Birk et al. 1997).

Fireball. Temperature. M0= 5.85 kg, tin= 0.13s.

Dashed line is an experiment (Hasegawa-Sato. 1978).

 

 

Utyuzhnikov, S.V., "Numerical modelling combustion of fuel-droplet-vapour releases in atmosphere", Int. J. Flow, Turbulence and Combustion, 2002, V.68, N2, pp. 137-152.