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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mechanical and Aerospace Engineering 33 2982 2800 1018 901 129 5474

Karen A. Flack publications per year

The chart shows the history of publications by Karen A. Flack between 1993 and 2022, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Karen A. Flack published across 30 years, from 1993 to 2022, averaging 4.7 papers a year. Output peaked at 11 publications in 2013. 10 of the 140 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1993 to 2022. Vertical axis: number of publications, 0 to 11. Peak 11 publications in 2013. 1993: 1 publication 1994: 1 publication 1995: 0 publications 1996: 4 publications 1997: 1 publication 1998: 2 publications 1999: 3 publications 2000: 6 publications 2001: 3 publications 2002: 4 publications 2003: 3 publications 2004: 2 publications 2005: 7 publications 2006: 8 publications 2007: 6 publications 2008: 3 publications 2009: 5 publications 2010: 5 publications 2011: 5 publications 2012: 8 publications 2013: 11 publications 2014: 6 publications 2015: 10 publications 2016: 6 publications 2017: 4 publications 2018: 11 publications 2019: 2 publications 2020: 3 publications 2021: 6 publications 2022: 4 publications
1993 2022

140 publications in total across all disciplines

View publications per year as a table
Karen A. Flack: publications per year, 1993 to 2022
Year Publications
1993 1
1994 1
1995 0
1996 4
1997 1
1998 2
1999 3
2000 6
2001 3
2002 4
2003 3
2004 2
2005 7
2006 8
2007 6
2008 3
2009 5
2010 5
2011 5
2012 8
2013 11
2014 6
2015 10
2016 6
2017 4
2018 11
2019 2
2020 3
2021 6
2022 4
Total 140
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Karen A. Flack publication distribution in Mechanical and Aerospace Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mechanical and Aerospace Engineering in 2026. The highlighted bar marks where Karen A. Flack sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 63 bars. Horizontal axis: publications, 47–56 to 659+. Vertical axis: number of scientists, 0 to 155. Most scientists, 155, have 147–156 publications. The last bar groups every scientist with 659 publications or more. The highlighted bar, 127–136 publications, is where this scientist sits. 47–56 publications: 10 scientists 57–66 publications: 23 scientists 67–76 publications: 32 scientists 77–86 publications: 62 scientists 87–96 publications: 67 scientists 97–106 publications: 91 scientists 107–116 publications: 113 scientists 117–126 publications: 115 scientists 127–136 publications: 130 scientists 137–146 publications: 140 scientists 147–156 publications: 155 scientists 157–166 publications: 132 scientists 167–176 publications: 133 scientists 177–186 publications: 130 scientists 187–196 publications: 140 scientists 197–206 publications: 115 scientists 207–216 publications: 125 scientists 217–226 publications: 117 scientists 227–236 publications: 99 scientists 237–246 publications: 92 scientists 247–256 publications: 100 scientists 257–266 publications: 95 scientists 267–276 publications: 88 scientists 277–286 publications: 77 scientists 287–296 publications: 74 scientists 297–306 publications: 74 scientists 307–316 publications: 62 scientists 317–326 publications: 70 scientists 327–336 publications: 59 scientists 337–346 publications: 58 scientists 347–356 publications: 45 scientists 357–366 publications: 44 scientists 367–376 publications: 36 scientists 377–386 publications: 41 scientists 387–396 publications: 32 scientists 397–406 publications: 23 scientists 407–416 publications: 28 scientists 417–426 publications: 27 scientists 427–436 publications: 25 scientists 437–446 publications: 23 scientists 447–456 publications: 23 scientists 457–466 publications: 20 scientists 467–476 publications: 12 scientists 477–486 publications: 24 scientists 487–496 publications: 18 scientists 497–506 publications: 12 scientists 507–516 publications: 13 scientists 517–526 publications: 21 scientists 527–536 publications: 12 scientists 537–546 publications: 8 scientists 547–556 publications: 16 scientists 557–566 publications: 3 scientists 567–576 publications: 11 scientists 577–586 publications: 6 scientists 587–596 publications: 5 scientists 597–606 publications: 6 scientists 607–616 publications: 7 scientists 617–626 publications: 7 scientists 627–636 publications: 10 scientists 637–646 publications: 4 scientists 647–656 publications: 3 scientists 657–658 publications: 2 scientists 659+ publications: 100 scientists
47–56 publications 659+

This scientist: 129 publications — 16th percentile

16% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 659 publications or more.

View publications distribution as a table
Number of Mechanical and Aerospace Engineering scientists by publication count, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
Publications Scientists This scientist
47–56 10
57–66 23
67–76 32
77–86 62
87–96 67
97–106 91
107–116 113
117–126 115
127–136 130 129
137–146 140
147–156 155
157–166 132
167–176 133
177–186 130
187–196 140
197–206 115
207–216 125
217–226 117
227–236 99
237–246 92
247–256 100
257–266 95
267–276 88
277–286 77
287–296 74
297–306 74
307–316 62
317–326 70
327–336 59
337–346 58
347–356 45
357–366 44
367–376 36
377–386 41
387–396 32
397–406 23
407–416 28
417–426 27
427–436 25
437–446 23
447–456 23
457–466 20
467–476 12
477–486 24
487–496 18
497–506 12
507–516 13
517–526 21
527–536 12
537–546 8
547–556 16
557–566 3
567–576 11
577–586 6
587–596 5
597–606 6
607–616 7
617–626 7
627–636 10
637–646 4
647–656 3
657–658 2
659+ 100
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Karen A. Flack D-index placement in Mechanical and Aerospace Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Karen A. Flack sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 64 bars. Horizontal axis: D-Index, 30 to 93+. Vertical axis: number of scientists, 0 to 189. Most scientists, 189, have 34 D-Index. The last bar groups every scientist with 93 D-Index or more. The highlighted bar, 33 D-Index, is where this scientist sits. 30 D-Index: 83 scientists 31 D-Index: 113 scientists 32 D-Index: 144 scientists 33 D-Index: 153 scientists 34 D-Index: 189 scientists 35 D-Index: 158 scientists 36 D-Index: 139 scientists 37 D-Index: 127 scientists 38 D-Index: 130 scientists 39 D-Index: 126 scientists 40 D-Index: 104 scientists 41 D-Index: 100 scientists 42 D-Index: 107 scientists 43 D-Index: 101 scientists 44 D-Index: 103 scientists 45 D-Index: 79 scientists 46 D-Index: 88 scientists 47 D-Index: 70 scientists 48 D-Index: 83 scientists 49 D-Index: 44 scientists 50 D-Index: 64 scientists 51 D-Index: 56 scientists 52 D-Index: 50 scientists 53 D-Index: 48 scientists 54 D-Index: 58 scientists 55 D-Index: 52 scientists 56 D-Index: 48 scientists 57 D-Index: 42 scientists 58 D-Index: 34 scientists 59 D-Index: 42 scientists 60 D-Index: 37 scientists 61 D-Index: 42 scientists 62 D-Index: 44 scientists 63 D-Index: 22 scientists 64 D-Index: 33 scientists 65 D-Index: 29 scientists 66 D-Index: 23 scientists 67 D-Index: 29 scientists 68 D-Index: 24 scientists 69 D-Index: 19 scientists 70 D-Index: 34 scientists 71 D-Index: 26 scientists 72 D-Index: 19 scientists 73 D-Index: 18 scientists 74 D-Index: 19 scientists 75 D-Index: 14 scientists 76 D-Index: 19 scientists 77 D-Index: 8 scientists 78 D-Index: 18 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 17 scientists 82 D-Index: 11 scientists 83 D-Index: 16 scientists 84 D-Index: 7 scientists 85 D-Index: 9 scientists 86 D-Index: 8 scientists 87 D-Index: 6 scientists 88 D-Index: 6 scientists 89 D-Index: 7 scientists 90 D-Index: 10 scientists 91 D-Index: 4 scientists 92 D-Index: 4 scientists 93+ D-Index: 100 scientists
30 D-Index 93+

This scientist: 33 D-Index — 14th percentile

14% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 93 D-Index or more.

View D-Index distribution as a table
Number of Mechanical and Aerospace Engineering scientists by D-index, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
D-Index Scientists This scientist
30 83
31 113
32 144
33 153 33
34 189
35 158
36 139
37 127
38 130
39 126
40 104
41 100
42 107
43 101
44 103
45 79
46 88
47 70
48 83
49 44
50 64
51 56
52 50
53 48
54 58
55 52
56 48
57 42
58 34
59 42
60 37
61 42
62 44
63 22
64 33
65 29
66 23
67 29
68 24
69 19
70 34
71 26
72 19
73 18
74 19
75 14
76 19
77 8
78 18
79 16
80 12
81 17
82 11
83 16
84 7
85 9
86 8
87 6
88 6
89 7
90 10
91 4
92 4
93+ 100
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Research.com Recognitions

  • 2014 - Fellow of American Physical Society (APS) Citation For her clarifying work on the structure of three dimensional turbulent boundary layers, and for better characterizing the connections between surface roughness geometry and boundary layer drag

Overview

Karen A. Flack is affiliated with the United States Naval Academy in the United States. Their research primarily revolves around fluid mechanics and engineering, with a focus on turbulence, surface roughness effects, and fluid dynamics in various environmental and mechanical contexts.

The main fields of study for Karen A. Flack include:

  • Engineering
  • Environmental Science

Within these fields, the subfields of interest encompass:

  • Computational Mechanics
  • Ocean Engineering
  • Aerospace Engineering
  • Environmental Engineering
  • Mechanical Engineering

Their research topics cover:

  • Particle Dynamics in Fluid Flows
  • Fluid Dynamics and Turbulent Flows
  • Wind and Air Flow Studies
  • Heat Transfer Mechanisms
  • Pickering emulsions and particle stabilization
  • Fluid Dynamics and Thin Films
  • Aerodynamics and Acoustics in Jet Flows

Recent scholarly publications by Karen A. Flack include:

  • The effect of a systematic change in surface roughness skewness on turbulence and drag, 2020, International Journal of Heat and Fluid Flow
  • Important Parameters for a Predictive Model of ks for Zero-Pressure-Gradient Flows, 2022, AIAA Journal
  • Hydraulic characterization of sandpaper roughness, 2022, Experiments in Fluids

Additional papers connected to their network of frequent coauthors include:

  • Predicting the Drag of Rough Surfaces, 2021, Annual Review of Fluid Mechanics
  • Performance characteristics of a cross-flow hydrokinetic turbine in current only and current and wave conditions, 2020, Ocean Engineering

Frequent collaborators in research with Karen A. Flack include:

  • Michael P. Schultz
  • Daniel Chung
  • Elizabeth A. K. Murphy
  • Julio M. Barros
  • Cecily N. Steppe

Their publications have appeared regularly in several venues, specifically:

  • Zenodo (CERN European Organization for Nuclear Research)
  • Annual Review of Fluid Mechanics
  • International Journal of Heat and Fluid Flow
  • AIAA Journal
  • Experiments in Fluids

Karen A. Flack was recognized as a Fellow of the American Physical Society (APS) in 2014 for work clarifying the structure of three-dimensional turbulent boundary layers and characterizing the connection between surface roughness geometry and boundary layer drag.

Best Publications

  • Review of Hydraulic Roughness Scales in the Fully Rough Regime

    Karen A. Flack;Michael P. Schultz

  • The rough-wall turbulent boundary layer from the hydraulically smooth to the fully rough regime

    M. P. Schultz;K. A. Flack

  • Experimental support for Townsend’s Reynolds number similarity hypothesis on rough walls

    Karen A. Flack;Michael P. Schultz;Thomas A. Shapiro

  • Predicting the Drag of Rough Surfaces

    Daniel Chung;Nicholas Hutchins;Michael P. Schultz;Karen A. Flack

  • Examination of a critical roughness height for outer layer similarity

    K. A. Flack;M. P. Schultz;J. S. Connelly

  • Turbulence structure in rough- and smooth-wall boundary layers

    R.J. Volino;M.P. Schultz;K.A. Flack

  • Roughness effects on wall-bounded turbulent flowsa)

    Karen A. Flack;Michael P. Schultz

  • Turbulent boundary layers on a systematically varied rough wall

    Michael P. Schultz;Karen A. Flack

  • Reynolds-number scaling of turbulent channel flow

    M. P. Schultz;K. A. Flack

  • Outer layer similarity in fully rough turbulent boundary layers

    M. P. Schultz;K. A. Flack

  • Turbulence structure in a boundary layer with two-dimensional roughness

    R. J. Volino;M. P. Schultz;K. A. Flack

  • Turbulence structure in boundary layers over periodic two- and three-dimensional roughness

    Ralph J. Volino;Michael P. Schultz;Karen A. Flack

  • Moving beyond Moody

    Karen A. Flack

  • Turbulent Boundary Layers Over Surfaces Smoothed by Sanding

    Michael P. Schultz;Karen A. Flack

  • Impact of diatomaceous biofilms on the frictional drag of fouling-release coatings

    M. P. Schultz;J. M. Walker;C. N. Steppe;K. A. Flack

  • The effect of surface waves on the performance characteristics of a model tidal turbine

    Luksa Luznik;Karen A. Flack;Ethan E. Lust;Katharin Taylor

  • Review : Advances in three-dimensional turbulent boundary layers with emphasis on the wall-layer regions

    J. P. Johnston;K. A. Flack

  • Experimental and numerical studies of blade roughness and fouling on marine current turbine performance

    Jessica M. Walker;Karen A. Flack;Ethan E. Lust;Ethan E. Lust;Michael P. Schultz

  • Velocity-defect scaling for turbulent boundary layers with a range of relative roughness

    J. S. Connelly;M. P. Schultz;K. A. Flack

  • Effect of Jet Pulsing on Film Cooling—Part I: Effectiveness and Flow-Field Temperature Results

    Sarah M. Coulthard;Ralph J. Volino;Karen A. Flack

  • Turbulent boundary layers over a systematically varied rough wall

    Michael Schultz;Karen Flack

Frequent Co-Authors

Michael P. Schultz
Michael P. Schultz United States Naval Academy
Ralph J. Volino
Ralph J. Volino United States Naval Academy
Elizabeth Murphy
Elizabeth Murphy National Heart Lung and Blood Institute
Nicholas Hutchins
Nicholas Hutchins University of Melbourne
Daniel Chung
Daniel Chung University of Melbourne

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