Coalescence Free Surfaces
Water injection in the industrial gas turbines is frequently used to improve the turbine performance during hot days. Injected water evaporates in the compressor section providing effective cooling leading to increased gas density and improved performance. Water injection technology poses several technological challenges. The injection system needs to be optimized to provide a uniform droplet size distribution across the inlet cross section. Water droplet interaction with static components of a compressor, such as casings and vanes may create accumulation of a water film dynamically shedding off. Such behavior leads to a non-optimum water distribution decreasing the overall efficiency of the water injection system. The purpose of the project is to understand the dynamic interaction between the wet air stream and compressor components. The planned work will be realized through computer modeling and experimental validation.