Opposed flow axisymmetric

Fig. 13.12 Opposed-flow diffusion flame between parallel, axisymmetric, burner faces that are fabricated as honeycomb monoliths. As illustrated, the flame is positioned on the oxidizer side of the stagnation plane. However, depending on the flow conditions as well as the fuel and oxidizer composition, the flame may form on the fuel side of the stagnation plane.

One can observe substantial differences between the previous 2D axisymmetric and present 3D simulations, both in calculated particle trajectories and in the behavior of specific parameters. Thus, 2D axisymmetric simulations expect downward particles motion in the region of the chamber central core and particle upward movement in the periphery of the chamber conical part. In contrast, the present 3D calculations predict asynunetric particle flow in the spray chamber particle descending motion in the central core and subsequent upward particle transport with recirculation that occurs mainly in the chamber half opposed to the air outlet pipe. Moreover, the results show that according to the previous 2D axisynunet-ric calculations, the large particles hit the walls during their... 

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