1 Matching Results

Search Results

Advanced search parameters have been applied.

Structure and evolution of the stabilization point of a lifted reacting jet

Description: In this work the authors study the stabilization point of a lifted, reacting jet of nitrogen diluted methane in co-flowing air. The jet flow is acoustically forced so as to organize the large scale vortical structures. The validation of the numerical results is possible through a concurrent experimental investigation of a similar planar jet. The use of an acoustically forced planar jet allows for significant savings by the restriction of the computation to two dimensions; the model is otherwise applicable in three dimensions. The authors based their study on the following parameters, which are derived from the experimental setup: a jet width of 1.16 cm, a mean jet velocity of 0.8 m/s, and a coflow velocity of 0.1 m/s. The acoustical forcing is studied at frequencies of 7.5 MHz and 90 MHz, which have been established experimentally as being characteristic of two broad behavioral modes. The authors restrict themselves to five species and the single step, irreversible, global reaction: CH{sub 4} + 2O{sub 2} {R_arrow} CO{sub 2} + H{sub 2}O (with passive N{sub 2}). This global chemistry is sufficient to establish the characteristics of the flow and the flame structure.
Date: November 1, 1997
Creator: Milne, B.; Devine, K.; Kempka, S. & Najm, H.
Partner: UNT Libraries Government Documents Department