1. Entrapment and cross-flow transport of air bubbles by a hydrophobic strip in a turbulent channel flow

   • Atsuhide Kitagawa
   • Petr Denissenko
   • Yuichi Murai

   Research Article 07 September 2021 Article: 198

   

2. Combining simultaneous density and velocity measurements of rotor blade tip vortices under cyclic pitch conditions

   • Johannes N. Braukmann
   • Andreas Goerttler
   • Markus Raffel

   Research Article Open access 06 September 2021 Article: 197

   

3. Improvement in systematic error in background-oriented schlieren results by using dynamic backgrounds

   • Frieder Reichenzer
   • Mike Schneider
   • Alois Herkommer

   Research Article Open access 05 September 2021 Article: 196

   

4. Effects of roughness on a turbulent boundary layer in hypersonic flow

   • Owen J. H. Williams
   • Dipankar Sahoo
   • Alexander J. Smits

   Research Article 03 September 2021 Article: 195

   

5. DNS of a turbulent boundary layer using inflow conditions derived from 4D-PTV data

   • Jason Appelbaum
   • Duncan Ohno
   • Christoph Wenzel

   Research Article Open access 03 September 2021 Article: 194

   

6. Low-density multi-fan wind tunnel design and testing for the Ingenuity Mars Helicopter

   • Marcel Veismann
   • Christopher Dougherty
   • Morteza Gharib

   Research Article 01 September 2021 Article: 193

   

7. 50 kHz Doppler global velocimetry for the study of large-scale turbulence in supersonic flows

   • Ashley J. Saltzman
   • K. Todd Lowe
   • Wing F. Ng

   Research Article 29 August 2021 Article: 192

   

8. On the micro-PIV accuracy and reliability utilizing non-Gaussian particle images

   • Sebastian Blahout
   • Simon R. Reinecke
   • Jeanette Hussong

   Research Article Open access 28 August 2021 Article: 191

   

9. Experimental characterization of mixing and flow field in the liquid plugs of gas–liquid flow in a helically coiled reactor

   • Conrad Müller
   • Péter Kováts
   • Katharina Zähringer

   Research Article Open access 28 August 2021 Article: 190

   

10. Critical cluster composition from homogeneous nucleation data: application to water in carbon dioxide–nitrogen carrier gases

    • M. M. Campagna
    • J. Hrubý
    • D. M. J. Smeulders

    Research Article Open access 25 August 2021 Article: 189

    

11. On the noise in statistics of PIV measurements

    • William K. George
    • Michel Stanislas

    Research Article 21 August 2021 Article: 188

    

12. Active control of a 3-D flow separation induced by a transonic shock

    • Travis J. Burrows
    • Bojan Vukasinovic
    • Ari Glezer

    Research Article 21 August 2021 Article: 187

    

13. The slip velocity of nearly neutrally buoyant tracers for large-scale PIV

    • David Engler Faleiros
    • Marthijn Tuinstra
    • Fulvio Scarano

    Research Article Open access 19 August 2021 Article: 186

    

14. Ultrasonic velocity profiler applied to explore viscosity–pressure fields and their coupling in inelastic shear-thinning vortex streets

    • Neetu Tiwari
    • Yuichi Murai

    Research Article Open access 19 August 2021 Article: 185

    

15. Using the hinge moment of a trailing edge flap for controlling dynamic stall loads

    • Ayman Mohamed
    • Mohamed Abdelhady
    • David H. Wood

    Research Article 17 August 2021 Article: 184

    

16. Distortion correction of two-component two-dimensional PIV using a large imaging sensor with application to measurements of a turbulent boundary layer flow at \(\hbox {Re}_{\tau } = 2386\)

    • Bihai Sun
    • Muhammad Shehzad
    • Julio Soria

    Research Article 14 August 2021 Article: 183

    

17. Aerodynamics of inclined cylindrical bodies free-flying in a hypersonic flowfield

    • Patrick M. Seltner
    • Sebastian Willems
    • Michael J. Aftosmis

    Research Article Open access 13 August 2021 Article: 182

    

18. A new approach to characterize firebrand showers using advanced 3D imaging techniques

    • Nicolas Bouvet
    • Eric D. Link
    • Stephen A. Fink

    Research Article 11 August 2021 Article: 181