Can I read Experimental and Numerical Study of the Accuracy of Flame-speed Measurements for Methane/air Combustion in a Slot Burner on EtoBox?

Experimental and Numerical Study of the Accuracy of Flame-speed Measurements for Methane/air Combustion in a Slot Burner by L. Selle; T. Poinsot; B. Ferret is a Engineering article available to read on EtoBox.

What is Experimental and Numerical Study of the Accuracy of Flame-speed Measurements for Methane/air Combustion in a Slot Burner about?

Measuring the velocities of premixed laminar flames with precision remains a controversial issue in the combustion community. This paper studies the accuracy of such measurements in two-dimensional slot burners and shows that while methane/air flame speeds can be measured with reasonable accuracy, the method may lack precision for other mixtures such as hydrogen/air. Curvature at the flame tip, strain on the flame sides and local quenching at the flame base can modify local flame speeds and require corrections which are studied using two-dimensional DNS. Numerical simulations also provide stretch, displacement and consumption flame speeds along the flame front. For methane/air flames, DNS show that the local stretch remains small so that the local consumption speed is very close to the unstretched premixed flame speed. The only correction needed to correctly predict flame speeds in this case is due to the finite aspect ratio of the slot used to inject the premixed gases which induces a flow acceleration in the measurement region (this correction can be evaluated from velocity measurement in the slot section or from an analytical solution). The method is applied to methane/air flame

Who reads Experimental and Numerical Study of the Accuracy of Flame-speed Measurements for Methane/air Combustion in a Slot Burner?

Author

L. Selle; T. Poinsot; B. Ferret

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0010-2180)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)