LAMINAR JET MIXING WITH INITIAL AND BOUNDARY EFFECTS.
Abstract
The objectives of the report are to investigate the flow field and the wall shear stress for laminar tangential injection. The effects of the boundary and initial velocity profiles under zero pressure gradient are considered. A linearized approximation with a coefficient chosen from the parameters of the boundary layer was used to analyze the slot injection. It is found that wall shear stress is almost independent of the ratio of jet velocity to free stream velocity and the ratio of slot height to initial outside boundary layer thickness. It is also found that the effectiveness of the jet mixing is greater for large ratios of slot height to initial outside boundary layer thickness than for small ratios. The asymptotic solution of the velocity distribution far downstream is compared with the Blasius profile and good agreement is found. The results can be used for film cooling to estimate the spacing between the injection slots for effective protection. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1970
- Accession Number
- AD0704983
Entities
People
- E. W. Allis
- Y. G. Tsuei
Organizations
- University of Cincinnati