Top

Published in:

2020 | OriginalPaper | Chapter

Visualization of Near-Wall Structures of an Isolated Cylindrical Roughness Element in a Laminar Boundary Layer Without Pressure Gradient

Authors : Jonathan Lemarechal, Esther Mäteling, Christian Klein, Dominik K. Puckert, Ulrich Rist

Published in: New Results in Numerical and Experimental Fluid Mechanics XII

Publisher: Springer International Publishing

Activate our intelligent search to find suitable subject content or patents.

search-config

AI-assisted search

Off

Abstract

The near-wall structures of a cylindrical roughness element were investigated experimentally. The element of aspect ratio \(\eta = 3\) and height \(k =\) 10 mm was placed inside the laminar flat-plate boundary layer of the laminar water channel, University of Stuttgart. The freestream velocity \(u_\infty \) was altered to investigate roughness Reynolds numbers in the range \(\text {Re}_{kk} = u_k k \nu ^{-1} = 380\) to \(\text {Re}_{kk} = 950\). Time-resolved surface visualizations with the Temperature-Sensitive Paint (TSP) method were performed to visualize the flow structures near the wall. Different formations of small scale structures in the unsteady wake at transitional conditions were detected. The results from the surface are compared to results from visualizations at the top edge of the cylindrical roughness element. Changes in the system of laminar horseshoe vortices and the recirculation zone are well captured.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

über 102.000 Bücher
über 537 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Finance + Banking
Management + Führung
Marketing + Vertrieb
Maschinenbau + Werkstoffe
Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

inform now

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

über 67.000 Bücher
über 390 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Maschinenbau + Werkstoffe

Jetzt Wissensvorsprung sichern!

inform now

previous chapter Experimental and Numerical Investigation of 3-D Corner Separation in a Channel Flow with Adverse Pressure Gradient

next chapter Analysis of Model Mount Configurations with Regard to Force Measurements with Transient Inflow

Gregory, N., Walker, W.S.: The effect on transition of isolated surface excrescence in the boundary layer. ARC Reports & Memoranda no. 2779, Aeronautical Research Council. HMSO, London (1956)

Cossu, C., Brandt, L.: On Tollmien-Schlichting-like waves in streaky boundary layers. Eur. J. Mech. B/Fluids 23(6), 815–833 (2004). https://doi.org/10.1016/j.euromechflu.2004.05.001MathSciNetCrossRefMATH

Sedney, R.: A survey of the effects of small proturbances on boundary-layer flows. AIAA J. 11(6), 782–792 (1973). https://doi.org/10.2514/3.50520CrossRef

Ye, Q., Schrijer, F.F.J., Scarano, F.: Geometry effect of isolated roughness on boundary layer transition investigated by tomograpihc PIV. In: International Symposium on Turbulence and Shear Flow Phenomena (TSFP-9), 30 June–3 July 2015, Melbourne, Australia (2015)

Baker, C.J.: The laminar horseshoe vortex. J. Fluid Mech. 95, 347–367 (1979)CrossRef

Liu, T., Sullivan, J.P.: Pressure and Temperature Sensitive Paints, 1st edn. Springer, Heidelberg (2005)

Fey, U., Egami, Y.: Transition-detection by temperature-sensitive paint. In: Tropea, C., Yarin, A.L., Foss, J.F. (eds.) Springer Handbook of Experimental Fluid Mechanics, Chap. 7.4. Springer, Berlin (2007)

Fey, U., Klein, C., Möller, T.J., Pöttner, J., Radespiel, R., Ondus, V., Beifuß, U.: Investigation of circular cylinder flow in water using temperature sensitive paint. In: Dillmann, A., et al. (eds.) New Results in Numerical & Experimental Fluid Mechanics VIII, NNFM, vol. 121, pp. 657–664. Springer, Heidelberg (2013)CrossRef

Miozzi, M., Capone, A., Di Felice, F., Klein, C., Liu, T.: Global and local skin friction diagnostics from TSP surface patterns on an underwater cylinder in cross flow. Phys. Fluids 28, 124101 (2016). https://doi.org/10.1063/1.4968525CrossRef

10.

Lemarechal, J., Klein, C., Henne, U., Puckert, P., Rist, U.: Spatially and temporally resolved visualization of turbulent spots in Blasius boundary layer transition. In: 18th International Symposium on Flow Visualization, Zurich, Switzerland (2018). https://doi.org/10.1109/HPDC.2001.945188

11.

Lemarechal, J., Mäteling, E., Klein, C., Puckert, P., Rist, U.: Reattaching flow behind a forward-backward facing step investigated with temperature-sensitive paint. In: Dillmann, A., et al. (eds.) New Results in Numerical & Experimental Fluid Mechanics XI, NNFM, vol. 136, pp. 285–294. Springer, Cham (2018)CrossRef

12.

Strunz M., Speth, J.F.: A new laminar water tunnel to study the transition process in a Blasius boundary layer and in a separation bubble and a new tool for industrial aerodynamics and hydrodynamic research. AGARD CP-413, pp. 25-1–25-5 (1987)

13.

Puckert, D.K., Dieterle, M., Rist, U.: Reduction of freestream turbulence at low velocities. Exp. Fluids 58 (2017). https://doi.org/10.1007/s00348-017-2333-y

14.

Ondrus, V., Meier, R.J., Klein, C., Henne, U., Schäferling, M., Beifuß, U.: Europium 1,3-di(thienyl)propane-1,3-diones with outstanding properties for temperature sensing. Sens. Actuators, A 233, 434–441 (2015). https://doi.org/10.1016/j.sna.2015.07.023CrossRef

15.

Mäteling, E., Lemarechal, J., Klein, C., Puckert, D.K., Rist, U.: Experimental investigation of mixed convection in horizontal channel flow in combination with cylindrical roughness elements. In: 21st STAB/DGLR Symposium STAB, Darmstadt, Germany (2018)

16.

Puckert, D., Subasi, A., Rist, U., Gunes, H.: Experimental investigations of critical roughness heights in a laminar boundary layer. In: 13th International Symposium on Fluid Control, Measurement and Visualization FLUCOME 2015, 15–18 November 2015, Doha, Qatar (2015)

Title: Visualization of Near-Wall Structures of an Isolated Cylindrical Roughness Element in a Laminar Boundary Layer Without Pressure Gradient
Authors: Jonathan Lemarechal
Esther Mäteling
Christian Klein
Dominik K. Puckert
Ulrich Rist
Publisher: Springer International Publishing
Book: New Results in Numerical and Experimental Fluid Mechanics XII
Print ISBN: 978-3-030-25252-6

Electronic ISBN: 978-3-030-25253-3

Copyright Year: 2020
DOI: https://doi.org/10.1007/978-3-030-25253-3_64

Springer Professional

Abstract

Please log in to get access to your license.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Springer Professional "Technik"

Premium Partners