LDA and CTA in-cylinder measurements of intake-generated turbulence for steady flow around a centrally located valve

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.

Name thesis:degree_name

MS

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Mechanical and Aerospace Engineering

Year dc:date.available

2001

Author dc:creator

• Bailey, Gearle Ray, Jr.

Contributors dc:contributor

• John Kuhlman.

• Automotive engineering
• Aerospace engineering
• Mechanical engineering

Identifier

https://researchrepository.wvu.edu/etd/1186

OAI identifier oai:identifier

oai:researchrepository.wvu.edu:etd-2189