The flow induced by a round turbulent offset jet in a low-aspect ratio cylinder is investigated experimentally, with applications to degassing of U.S. Strategic Petroleum Reserves (SPR). Particle image velocimetry and flow visualization are used for flow diagnostics. The measurements include the jet penetration (mixing) depth l, jet spreading rate, and the mean velocity/vorticity fields for different offset positions Δ. With the introduction of offset, the flow patterns change drastically. For 0 < Δ/D < 0.2 the jet deflects toward the wall while precessing (as in the axisymmetric case), for 0.2 < Δ/D < 0.4 the jet hugs the wall but with an oscillating tail, and for 0.45 < Δ/D the jet appears as a wall jet. In all cases, the jet is destroyed at a certain distance (mixing or penetration depth) from the origin. This mixing depth takes its lowest value for 0 < Δ/D < 0.2, with l ≈ (3.2–3.6)D, becomes maximum at Δ/D = 0.4 with l ≈ 5.2D, and drops to l ≈ 4.5D when the jet is close to the wall. Recommendations are made for suitable Δ/D values for optimal operation of SPR degassing.
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Department of Civil and Environmental
Engineering and Earth Sciences,
University of Notre Dame,
e-mail: cnath@nd.edu
Department of Civil and Environmental
Engineering and Earth Sciences,
University of Notre Dame,
P. P. Shirshov Institute of Oceanology,
Russian Academy of Sciences,
Moscow 117851,
Sandia National Laboratories,
Albuquerque, NM 87185
Department of Civil and Environmental
Engineering and Earth Sciences,
Department of Aerospace
and Mechanical Engineering,
University of Notre Dame,
Article navigation
June 2014
Special Section Articles
Offset Turbulent Jets in Low-Aspect Ratio Cavities
C. Nath,
Department of Civil and Environmental
Engineering and Earth Sciences,
University of Notre Dame,
e-mail: cnath@nd.edu
C. Nath
Environmental Fluid Dynamics Laboratories
,Department of Civil and Environmental
Engineering and Earth Sciences,
University of Notre Dame,
Notre Dame, IN 46556
e-mail: cnath@nd.edu
Search for other works by this author on:
S. I. Voropayev,
Department of Civil and Environmental
Engineering and Earth Sciences,
University of Notre Dame,
P. P. Shirshov Institute of Oceanology,
Russian Academy of Sciences,
Moscow 117851,
S. I. Voropayev
Environmental Fluid Dynamics Laboratories
,Department of Civil and Environmental
Engineering and Earth Sciences,
University of Notre Dame,
Notre Dame, IN 46556
;P. P. Shirshov Institute of Oceanology,
Russian Academy of Sciences,
Moscow 117851,
Russia
Search for other works by this author on:
D. Lord,
Sandia National Laboratories,
Albuquerque, NM 87185
D. Lord
Geotechnology and Engineering Department
,Sandia National Laboratories,
P.O. Box 5800 MS-0706
,Albuquerque, NM 87185
Search for other works by this author on:
H. J. S. Fernando
Department of Civil and Environmental
Engineering and Earth Sciences,
Department of Aerospace
and Mechanical Engineering,
University of Notre Dame,
H. J. S. Fernando
Environmental Fluid Dynamics Laboratories
,Department of Civil and Environmental
Engineering and Earth Sciences,
Department of Aerospace
and Mechanical Engineering,
University of Notre Dame,
Notre Dame, IN 46556
Search for other works by this author on:
C. Nath
Environmental Fluid Dynamics Laboratories
,Department of Civil and Environmental
Engineering and Earth Sciences,
University of Notre Dame,
Notre Dame, IN 46556
e-mail: cnath@nd.edu
S. I. Voropayev
Environmental Fluid Dynamics Laboratories
,Department of Civil and Environmental
Engineering and Earth Sciences,
University of Notre Dame,
Notre Dame, IN 46556
;P. P. Shirshov Institute of Oceanology,
Russian Academy of Sciences,
Moscow 117851,
Russia
D. Lord
Geotechnology and Engineering Department
,Sandia National Laboratories,
P.O. Box 5800 MS-0706
,Albuquerque, NM 87185
H. J. S. Fernando
Environmental Fluid Dynamics Laboratories
,Department of Civil and Environmental
Engineering and Earth Sciences,
Department of Aerospace
and Mechanical Engineering,
University of Notre Dame,
Notre Dame, IN 46556
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received July 24, 2013; final manuscript received November 4, 2013; published online April 28, 2014. Assoc. Editor: Ye Zhou.
J. Fluids Eng. Jun 2014, 136(6): 060911 (7 pages)
Published Online: April 28, 2014
Article history
Received:
July 24, 2013
Revision Received:
November 4, 2013
Citation
Nath, C., Voropayev, S. I., Lord, D., and Fernando, H. J. S. (April 28, 2014). "Offset Turbulent Jets in Low-Aspect Ratio Cavities." ASME. J. Fluids Eng. June 2014; 136(6): 060911. https://doi.org/10.1115/1.4026023
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