The use of Small Gas Turbine to meet on-site small-scale
energy demand offers a great opportunity for preliminary energy
saving and reduction of pollutant and greenhouse emissions. The
properly designed atomizer can reduce emission and impart
flame stability. The numerical simulation of designed pressure
swirl atomizer for small scale gas turbine combustion chamber
is carried out using ANSYS Fluent. The fuel injection pressure
at inlet is kept 6 bar, 9 bar, 12 bar, 15 bar and 18 bar and ambient
pressure and temperature is kept constant at atmospheric
condition. LISA (Linearized Instability Sheet Atomization)
model is used to understand the primary atomization process
while the TAB (Taylor Analogy Breakup) model is used to
understand secondary breakup of droplets. The numerical results
of variation of non-dimensional Sautar mean diameter (SMD) at
different injection pressure are compared with theoretical results.
It has been found that the non-dimensional SMD decreases with
increases in injection pressure and TAB model give satisfactory
values compared to theoretical one.
Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 .