Date of Graduation
Statler College of Engineering and Mineral Resources
Mechanical and Aerospace Engineering
The purpose of this study was to measure the axial and swirl velocities for steady flow in a cylinder past an intake valve, in order to study the effects of swirl and valve lift on turbulence generation. A simple geometry was used for an initial look at the flow past a valve.;A cylinder with a centrally located valve was used as the test bed. The valve was tested at lifts of 4 and 9 mm Two intake geometries were tested: a straight intake port and a swirl intake port. A single sensor Constant Temperature Anemometry (CTA) and a one-component Laser Doppler Anemometry (LDA) system were used to measure velocity profiles in the cylinder.;The LDA and CTA data agreed relatively well. Both showed a conical jet after the valve, which impacted the cylinder wall near 25.4 mm above the cylinder head. A recirculating flow was seen above the valve for each case. Solid body rotation of the flow was present for the swirl intake flow.
Bailey, Gearle Ray Jr., "LDA and CTA in-cylinder measurements of intake-generated turbulence for steady flow around a centrally located valve" (2001). Graduate Theses, Dissertations, and Problem Reports. 1186.