TY  - JOUR
Y1  - 2010///
AV  - public
A1  - García-Soriano, G.
A1  - Higuera Antón, Francisco
A1  - Castillo, J.L.
A1  - García-Ybarra, P.L.
PB  - Real Academia de Ciencias de Zaragoza
N2  - The burning velocity of a premixed ?ame propagating in a given ?ammable mixture is known to depend on the di?erence between the curvature of the ?ame and the so-called curvature of the ?ow, which is the strain rate of the ?ow of fresh gas along the normal to the ?ame divided by the burning velocity of the planar ?ame. The di?erence between the local burning velocity and the burning velocity of a planar ?ame in a gas at rest is proportional to the di?erence of the ?ame and ?ow curvatures. The proportionality factor is the product of the burning velocity of the planar ?ame and the Markstein length, which is an intrinsic property of the ?ame that characterizes its dynamics. The Markstein length can be determined experimentally by simultaneously measuring the curvature of the ?ame and the strain rate of the ?ow. To achieve this goal, we have set up a laminar jet burner and used two PIV systems to measure the gas ?ow velocity in two perpendicular planes normal to the ?ame. Each PIV system is composed by two Q-switched Nd: YAG pulse lasers (New Wave, maximum 120 mJ/pulse at 532 nm wavelength), a double-shuttered cross-correlation camera (PCO, 1392 × 1040 pixels) and a pulse generator (ILA GmbH) to synchronize all the components as well as the two PIV systems. Oil droplets are used for tracking the ?ow and the ?ame. They are formed by condensation after oil evaporation in a seeding chamber placed in the air line. Seeded air and fuel gas (CO,H2, CH4) are mixed in a settling chamber upstream of the burner and burned in a stationary Bunsen ?ame. The oil droplets evaporate in the ?ame preheating region, thereby allowing a dual tomography of the front.
ID  - upm6745
TI  - Curvature and burning velocity of Bunsen Flame tips.
CY  - Zaragoza, España
VL  - 34
SP  - 1
EP  - 11
UR  - http://www.unizar.es/acz/05Publicaciones/Monografias/MonografiasPublicadas/Monografia34/073.pdf
JF  - Monografías de la Real Academia de Ciencias de Zaragoza
ER  -