Research Article Open Access

Experimental Analysis of Flow through Rotating Swirler with Effect of Guide Vane

Abstract

Swirling flow is required for controlling and achieve stabilized flames in combustion chamber. Swirling flow has large effect on flow field for getting stabilised and proper combustion intensity by controlling the mixing of the mixture. The core objective of this study is to present the details of the experimental analysis of an axisymmetric swirler model. Swirler with 8 blades at 45° rotating vane is studied experimentally. Also the effect of guide vane at different inlet and outlet angle on the rotating swirler is studied experimentally. An overlap angle of 30° is provided between the vanes for the proper guidance of the flow through swirler. A hemi spherical bluff body is attached to the hub in order to overcome the inlet flow field distortion. A five-hole probe has been used with traversing mechanism for measurement of flow. The recirculation velocities at the centre core and corner regions are well captured with the five-hole probe. Measurements along the entire length of the model at different stations, allow the determination of axial mean velocity component and pressure field parameters, which provide comprehensive information to aid and understand such complex recirculation flows. Flow field characteristics downstream of the swirler at different axial locations are examined in detail. The recirculation length and width are found to be strongly dependent on the amount of turbulence created by the vane swirler. Experimental analysis gives complete visualization of swirl flow with limits of boundary for mixing of flow.

Mansha kumari, Shah Jagruti , Arvind.S.Mohite

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