Evolution and velocity fields for a buoyant jet in a stratified environment
- The George Washington University, 800 22nd St, NW (United States)
Velocity fields for a turbulent, vertical, buoyant jet interacting with a linear density stratified environment are obtained to study the effect of stratification on flow evolution and entrainment. Analysis of the flow field with a Reynolds, Re, of 20,000 and a 3% density difference is accomplished using time-resolved particle image velocimetry in a refractive index matched flow facility. Flow field statistics are compared to a benchmark neutrally buoyant jet in a uniform environment. Velocity fields indicate that the buoyant jet is strongly affected from stratification, where the jet is no longer self-similar, and succumbs to a final height. Stratification also changes the entrainment process, where a double momentum effect occurs. Centerline analysis suggests overall turbulence suppression occurs from stratification. (authors)
- Research Organization:
- American Nuclear Society - ANS, Thermal Hydraulics Division, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
- OSTI ID:
- 22977487
- Country of Publication:
- United States
- Language:
- English
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