Embedded Files
Three dimensional spray processes are found in rocket engines, gas turbine combustors, internal combustion engines, furnaces etc.
The research emphasis is on understanding the liquid sheet breakup dynamics associated with the spray formation, droplet vapourisation in combustion environments, and spray combustion.
Schematic of the modified IIST-GS1 burner with atomizer
Effect of Swirl on the Droplet/Air Interaction and Combustion in a Swirl Stabilized Spray Flame
Effect of Swirl on the Droplet/Air Interaction and Combustion in a Swirl Stabilized Spray Flame
The in-situ developed IIST-GS1 swirl burner is adapted with a commercially available pressure swirl atomizer for atomizing the kerosene fuel.
The influence of varying air-to-liquid momentum ratios (MR) of swirling combustion air on the spray and flame characteristics are experimentally investigated using non-intrusive optical and laser diagnostic methods.
Photograph of the burner and the injector
1D-PDPA measurement locations
Radial profiles of normalized mean axial velocities of the droplets for varying MR at different axial locations (z/Dh) under non-burning conditions
A converging-diverging flowfield is established by the bluffbody and the swirling airflow.
The droplet velocity is maximum at regions overlapping the high-velocity in-stream of airflow.
With varying MR, the wide range of positive and negative droplet velocities created indicate entrainment of the droplets into the central recirculation region and transporting them back towards the burner exit.
Finer droplets are formed closer to the burner and SMD gradually increased with increasing distance.
SMD of droplets at different axial locations with varying MR
The flame shape changed from mushroom to cylindrical under reactive flow conditions as the MR is increased from 29 to 181
Flame bi-stability at MR=59.
Innovative Student Projects Award from Indian National Academy of Engineering (INAE) for the M.Tech project was awarded to Mr. Mahendran Arun (2017) for this work.
Page updated
Google Sites
Report abuse