Fig. 1 Methodology for data-driven design space mapping: ( a ) 3708 compressors sampled from mean-line design space, ( b ) polynomial surface fits to CFD results, and ( c ) loss mechanism extraction More about this image found in Methodology for data-driven design space mapping: ( a ) 3708 compressors sa...

Fig. 2 Modular architecture of the turbigen design system More about this image found in Modular architecture of the turbigen design system

Fig. 3 Geometry for datum compressor: ( a ) annulus lines, ( b ) thickness distribution, and ( c ) normalized camber line More about this image found in Geometry for datum compressor: ( a ) annulus lines, ( b ) t...

Fig. 4 Cross-validation of polynomial fit to total-to-total efficiency. k max = 3 gives a test error of 1.2% without overfitting. More about this image found in Cross-validation of polynomial fit to total-to-total efficiency. k max...

Fig. 5 Calibration plot of predicted against actual total-to-total efficiency for one of ten cross-validation folds. With respect to CFD results, errors are less than 2% points for 92% of test designs unseen by the fit. More about this image found in Calibration plot of predicted against actual total-to-total efficiency for ...

Fig. 6 Comparison of polynomial efficiency fit over the present compressor dataset with the Cordier line [ 2 ]. Total-to-total efficiency reduces by 8% points at the extremes of the line. More about this image found in Comparison of polynomial efficiency fit over the present compressor dataset...

Fig. 7 Reproduction of Fig. 11 from Rusch and Casey [ 4 ] using a polynomial fit to the present dataset. Shock losses at high M a 1 rel , and separations at high r c 1 / r 2 set design space boundaries. More about this image found in Reproduction of Fig. 11 from Rusch and Casey [ 4 ] using a polynomial fit t...

Fig. 8 Effect of inlet Mach number on ( a ) pitchwise-averaged entropy loss coefficient and ( b ) lost efficiency. Surface dissipation increases at low M a 1 rel due to high surface area. Mixing loss due to casing separation increases at high M a 1 rel ... More about this image found in Effect of inlet Mach number on ( a ) pitchwise-averaged entropy los...

Fig. 9 Effect of pressure ratio and Mach number on efficiency. M a 1 rel for the highest efficiency increases as P R tt increases. More about this image found in Effect of pressure ratio and Mach number on efficiency. M a 1 rel...

Fig. 10 Effect of hub-to-tip ratio on lost efficiency. Surface dissipation increases at high H T R 1 due to high hub area. Mixing loss increases at low H T R 1 due to high casing curvature. More about this image found in Effect of hub-to-tip ratio on lost efficiency. Surface dissipation increase...