Nonlinear non-stationary equation describing evolution of weakly curved premixed flames with arbitrary gas expansion, subject to the Landau-Darrieus instability, is derived. The new equation respects all the conservation laws to be satisfied across the flame front, as well as correctly takes into account influence of vorticity, generated in the flame, on the flame front structure and flame velo...

The propagation of an isobaric premixed flame into a quiescent gas mixture fuel and oxidizer contained between two parallel plates is investigated numerically. are separated by small distance h considered as adiabatic. assumed to be lean in the combustion model includes single-step Arrhenius-type reaction, constant heat capacity unity Lewis number. Transport properties temperature dependent or ...

Abstract The power output of a straight-bladed H-rotor Darrieus vertical axis wind turbine (HDVAWT) is explored in this article. comparisons are performed between the NACA0018 airfoil and series Kline Fogelman modified airfoils. computational fluid dynamics findings first cross-checked with experimental data, processes validated as consequence. Then, CATIA, 12 airfoils were constructed by modif...

Experimental propane/air Bunsen flame at atmospheric pressure are investigated in the context of DarrieusLandau (DL) instability. Results from asymptotic theory are utilized in order to estimate the non-dimensional critical length scale δc = LD/λc (LD the flame thickness and λc the critical length scale). The non-dimensional flame thickness δ = LD/L is varied either by varying the equivalence r...