Validation of a novel numerical model for the electric currents in burner-stabilized methane–air flames

Development of a numerical model for the electric current in burner-stabilised methane–air flames

“…This is an extension to the model developed by Speelman et al [25], that focuses primarily on the full description of the model and the use of the model to optimize an ionization mechanism. This is achieved by modeling the charged species in the existing CHEM1D [26] software package and by including the electric forces on the charged species in the diffusion model to compute the electric current density in the flame.…”

Effects of direct-current electric fields on flame shape and combustion characteristics of ethanol in small scale

“…32 A theoretical and numerical model for ionized methane-air flames was developed to predict the electric currents based on the charged particle distribution in the flame. 33 The effects of electric fields on flames and resulting currents are not well understood and relatively unexplored. Carefully performed and well-documented experiments are of utmost importance to broaden our knowledge.…”

A spectral deferred correction strategy for low Mach number reacting flows subject to electric fields

“…Throughout this section, we consider an unstrained one-dimensional burner-stabilized premixed methane/air flame. The operating conditions correspond to the experimental study of Speelman et al [20]: the inlet velocity is set to the flame speed of a stoichiometric methane/air flame at T Algorithm 2: JFNK resolution 1 Get typical values of X (0) and F (X (0) ) to fill S X and S F 2 do while : blocks -Gram-Schmidt method to orthogonalize K p -Find δX p that minimizes residual r p in the Krylov subspace K p (P −1 J (l) , r 0 ) -Evaluate λ such that ||F (X (l) + λδX p )|| < ||F (X (l) ) − αλ∇F (X (l) ) δX p || -Update X (l+1) = X (l) + λδX p = 300 K while the inlet temperature is set to T = 350 K, such that the flame is stabilized on the left boundary of the domain. Simulations are initialized from a resolved CANTERA [51] solution (∼ 4000 unequally-spaced grid points), that does not include the effect of the electric field.…”

“…Burner-stabilized, steady-state premixed methane/air flames subjected to DC electric fields have been studied using the PREMIX program in previous studies [20,38]. Fig.…”

“…Oxygen and CH are the key neutral species controlling the production rate of electrons, i.e. the number of charged particles in the flame and consequently the maximum current that can be drawn from the flame [20,22]. Accordingly, the peak electron density in Fig.…”