Turbulence Structure of Mixing Swirling Flows.
Abstract
Modifications to the swirling jet flow facility and mean flow data taken in the initial mixing region are described. Measurements are made at six streamwise locations downstream of the nozzle exit for three different initial mass flow rate ratios. The data were analyzed in order to calculate static pressure profiles, total and component velocity profiles, and local wall shear stress values. The results show that an axially-directed outer stream inhibits the spreading rate of the swirling inner stream and the decay of the swirl within that stream. The results also show that near-wall similarity exists in flow near the centerbody, so that the two dimensional form of the law-of -the-wall, when applied to the total velocity, can serve as a valid wall function for prediction purposes. Keywords: Turbulent jets, Mixing, Turbulence structure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 18, 1987
- Accession Number
- ADA193063
Entities
People
- Frederick B. Gessner
Organizations
- University of Washington