Large Eddy Simulation;
Two-Phase Flow;
Gas-Turbine Combustor;
Lean Direct Injection;
Hollow-Cone Spray;
LARGE-EDDY SIMULATION;
SPRAY COMBUSTION;
MODEL;
JET;
D O I:
10.5139/JKSAS.2019.47.3.204
中图分类号:
V [航空、航天];
学科分类号:
08 ;
0825 ;
摘要:
The analysis on two-phase flow in a Lean Direct Injection(LDI) combustor has been investigat ed. Linearized Instability Sheet Atomization(LISA) and Aerodynamically Progressed Taylor Analogy Breakup(APTAB) breakup models are applied to simulate the droplet breakup process in h ollow-cone spray. Breakup model is validated by comparing penetration length and Sauter Mea n Diameter(SMD) of the experiment and simulation. In the LDI combustor, Precessing Vortex C ore(PVC) is developed by swirling flow and most droplets are atomized along the PVC. It has been confirmed that all droplets have Stokes number less than 1.0.