Optimization of aero-engine combustion chambers with the assistance of Hierarchical-Kriging surrogate model based on POD downscaling method

Advances in Aerodynamics

Table 3 Comparison of combustion chamber performance parameters

Performance parameters	Case 1	Case 2	CFD 3D calculation results
Combustion efficiency	0.9994	0.9994	0.9974
Total pressure recovery	0.9601	0.9565	0.9604
OTDF	0.2053	0.2054	0.261