Date of download: 10/12/2017 Copyright © ASME. All rights reserved. From: Theoretical and Experimental Analysis of the Steady Flow Across the Cylinderhead of a Low-Capacity Engine J. Appl. Mech. 2016;83(12):124501-124501-4. doi:10.1115/1.4034619 Figure Legend: (Left) Sketch and parameters of the problem. (Right-top) Coordinate system for the PIV measurements (the gray circle represents the inlet valve). (Right-bottom) Elements of the geometrical configuration.

Date of download: 10/12/2017 Copyright © ASME. All rights reserved. From: Theoretical and Experimental Analysis of the Steady Flow Across the Cylinderhead of a Low-Capacity Engine J. Appl. Mech. 2016;83(12):124501-124501-4. doi:10.1115/1.4034619 Figure Legend: (Left) Coordinates xv* (triangles) and yv* (circles) of the vortex center as a function of the distance Z from the cylinderhead for the valve lift 12 mm. (Right) Vortex positions in the cylinder. The red, green, and blue lines in the left-hand (right-hand) image correspond to the valve lifts 4, 6, and 7 mm (8, 10, and 12 mm), respectively. The line thickness indicates the experimental uncertainty. The circle plotted at the cylinder bottom indicates the inlet valve position.

Date of download: 10/12/2017 Copyright © ASME. All rights reserved. From: Theoretical and Experimental Analysis of the Steady Flow Across the Cylinderhead of a Low-Capacity Engine J. Appl. Mech. 2016;83(12):124501-124501-4. doi:10.1115/1.4034619 Figure Legend: (From top to bottom) Average velocity field for Z = 15, 25, 35, and 70 mm and the valve lift 12 mm obtained experimentally (left-hand plots) and numerically (right-hand plots). The arrows approximately indicate the vortex center.

Date of download: 10/12/2017 Copyright © ASME. All rights reserved. From: Theoretical and Experimental Analysis of the Steady Flow Across the Cylinderhead of a Low-Capacity Engine J. Appl. Mech. 2016;83(12):124501-124501-4. doi:10.1115/1.4034619 Figure Legend: Average velocity field measured with our PIV system at a distance Z = 70 mm for the valve lifts 4, 6, 7, 8, 10, and 12 mm. The labels and the arrows indicate the valve lifts and the vortex center positions, respectively.

Date of download: 10/12/2017 Copyright © ASME. All rights reserved. From: Theoretical and Experimental Analysis of the Steady Flow Across the Cylinderhead of a Low-Capacity Engine J. Appl. Mech. 2016;83(12):124501-124501-4. doi:10.1115/1.4034619 Figure Legend: α (left) and S (right) as a function of the valve lift. The experimental data are the average over the measurements for the four cylinders of 19 cylinderheads manufactured in series. The error bars are the corresponding standard deviations.

Date of download: 10/12/2017 Copyright © ASME. All rights reserved. From: Theoretical and Experimental Analysis of the Steady Flow Across the Cylinderhead of a Low-Capacity Engine J. Appl. Mech. 2016;83(12):124501-124501-4. doi:10.1115/1.4034619 Figure Legend: (Left) α and S for the valve lift 7 mm as a function of the Reynolds number. The solid and open symbols correspond to the cylinderhead analyzed in this work and another similar cylinderhead, respectively. (Right) Vortex coordinates xv* and yv* as a function of the Reynolds number for the valve lift 8 mm and the distance Z = 70 mm from the cylinderhead.