Characterization of Flow Structures and Turbulence in Hypersonic Jet Interaction Flowfields

Characterization of Coherent Flow Structures in a Swirl-Stabilized Spray Combustor

AIAA Scitech 2021 Forum ◽

10.2514/6.2021-0791 ◽

2021 ◽

Author(s):

Nicholas Rock ◽

Scott D. Stouffer ◽

Tyler H. Hendershott ◽

Edwin Corporan ◽

Paul Wrzesinski

Keyword(s):

Flow Structures ◽

Coherent Flow Structures

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Experimental investigation of super- and hypersonic jet interaction on configurations with lifting surfaces

10.2514/6.1997-3723 ◽

1997 ◽

Cited By ~ 3

Author(s):

Julius Brandeis ◽

Jacob Gill ◽

Julius Brandeis ◽

Jacob Gill

Keyword(s):

Experimental Investigation ◽

Jet Interaction ◽

Lifting Surfaces ◽

Hypersonic Jet

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Characterization of Unsteady Flow Structures Near Leading-Edge Slat: Part I: PIV Measurements

10th AIAA/CEAS Aeroacoustics Conference ◽

10.2514/6.2004-2801 ◽

2004 ◽

Cited By ~ 38

Author(s):

Luther Jenkins ◽

Mehdi Khorrami ◽

Meelan Choudhari

Keyword(s):

Unsteady Flow ◽

Leading Edge ◽

Flow Structures ◽

Piv Measurements

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Acoustic Characterization of Jet Interaction with Launch Structures During Lift-Off

Journal of Spacecraft and Rockets ◽

10.2514/1.a33616 ◽

2017 ◽

Vol 54 (2) ◽

pp. 356-367 ◽

Cited By ~ 2

Author(s):

N. Karthikeyan ◽

L. Venkatakrishnan

Keyword(s):

Jet Interaction ◽

Acoustic Characterization ◽

Lift Off

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Microscale hydrodynamics and coherent flow structures in rivers: Implications for the characterization of physical habitat

River Research and Applications ◽

10.1002/rra.1109 ◽

2009 ◽

Vol 25 (2) ◽

pp. 160-180 ◽

Cited By ~ 28

Author(s):

Gemma L. Harvey ◽

Nicholas J. Clifford

Keyword(s):

Flow Structures ◽

Physical Habitat ◽

Coherent Flow Structures

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Characterization of Flow Structures Induced by Highly Rough Surface Using Particle Image Velocimetry, Proper Orthogonal Decomposition and Velocity Correlations

Engineering ◽

10.4236/eng.2018.107028 ◽

2018 ◽

Vol 10 (07) ◽

pp. 399-416 ◽

Cited By ~ 4

Author(s):

L. R. Andersson ◽

I. A. S. Larsson ◽

J. G. I. Hellström ◽

P. Andreasson ◽

A. G. Andersson ◽

...

Keyword(s):

Particle Image Velocimetry ◽

Proper Orthogonal Decomposition ◽

Rough Surface ◽

Particle Image ◽

Orthogonal Decomposition ◽

Flow Structures ◽

Image Velocimetry ◽

Proper Orthogonal

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Experimental characterization of boiling two-phase flow structures under BWR core operating conditions

Nuclear Engineering and Design ◽

10.1016/j.nucengdes.2020.110708 ◽

2020 ◽

Vol 365 ◽

pp. 110708 ◽

Cited By ~ 1

Author(s):

J.-M. Le Corre

Keyword(s):

Two Phase Flow ◽

Operating Conditions ◽

Flow Structures ◽

Phase Flow ◽

Experimental Characterization ◽

Two Phase

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Characterization of Flow Structures in a Diesel Injector for Different Needle Lifts and a Fluctuating Injection Pressure

Journal of Fluids Engineering ◽

10.1115/1.4033125 ◽

2016 ◽

Vol 138 (8) ◽

Cited By ~ 5

Author(s):

Alexandre Pelletingeas ◽

Louis Dufresne ◽

Patrice Seers

Keyword(s):

Steady State ◽

Coherent Structures ◽

Injection Pressure ◽

Internal Flow ◽

Orthogonal Decomposition ◽

Navier Stokes ◽

Flow Structures ◽

Single Hole ◽

Proper Orthogonal

This paper aims at analyzing the needle lift's influence on the internal flow of single-hole diesel injector to identify flow structures. A numerical Reynolds-Averaged Navier–Stokes (RANS) model of a single-hole diesel injector was developed and validated to study the flow's dynamic for different needle's lifts and subjected to realistic injection pressure. The main findings are: (1) under steady injection pressure, flow coefficients reached a steady-state value and maximum injected fuel mass flow rate is reached at intermediate needle's lifts. (2) The sac volume is the area with several vortex structures due to the throttling between the needle body and the injector body. (3) The frequency of the fluctuating injection pressure can excite the initial jet entering the sac volume similarly to the Coanda effect. Finally, using a proper orthogonal decomposition (POD) allowed extracting coherent structures within the sac volume and putting in evidence a reorganization of the flow.

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