V Gutter Flame Holder

Fourier analysis principal component analysis pca and wavelet analysis wa.

V gutter flame holder.

From the dynamic stability point of view most of the previous research on thermo acoustic instability focuses on the bluff body v gutter and backward facing step flame holders. In this paper the numerical study of cold flow over two types of regular and wavy v gutter flame holders has been presented. All these experimental and computational studies have contributed to the understanding of bluff body supported flame stabilization. In this paper a.

Even more effective however is the v gutter flame holder which is shaped like a v with the point in the direction facing the flow of air. Flame was more stable than the flame possessing a wake instability. Some studies have suggested that adding a small amount of base bleed to a v gutter helps reduce drag without reducing effectiveness. This paper therefore describes a case study to compare the characterization of combustion dynamics behind a v gutter flame holder using three mathematical methods.

To avoid potential auto ignition due to high inlet air temperatures modern augmentors employ close coupled fuel injector flame holder designs. Gas turbine augmentors employ bluff body flame holders to anchor and stabilize the flame. However there still is a need for fundamental studies and flame holder testing. In fluid dynamics an eddy is the swirling of a fluid and the reverse current created when the fluid is in a turbulent flow regime.

The design of the flame holder is an issue of balance between a stable eddy and drag. The edges of the v gutter which are smooth in the regular case are sh. The new novel flame holder concept clearly demonstrated an improved lo lbo performance pver the conventional v gutter flame holder. There are few studies on combustion instability using pilot flame holder.

Flame transfer function 1. Even more effective however is the v gutter flame holder which is shaped like a v with the point in the direction facing the flow of air. The corresponding combustor design could be guided by the above results. The comparison focuses on the analysis of the characteristic frequencies of flow flame interactions.

A flame holder creates a low speed eddy in the engine to prevent the flame from being blown out. A novel multi lobe flame holder design concept was designed fabricated and tested under high vitiated air flow temperature conditions for light off lo and lean blow out lbo performance.