A Complex Evaluation and Optimization Approach for Oxygen-Enriched Combustion Characteristics of Blended Fuels Based on Response Surface Methodology

Table 3

Comprehensive evaluation of R² of comprehensive combustion characteristic index.

Model	Standard deviation	R^2	R^2 corrected value	R^2 predicted value	Predicted residual sum of squares	Scheme selection
Linear model	4.21	0.7984	0.7602	0.5012	541.18
2FI	3.18	0.8617	0.8579	0.4631	606.15
Quadratic equation	1.96	0.9366	0.9517	0.6982	327.08	Recommended
Cubic equation	0.77	0.9970	0.9914	0.6771	392.12	Poor