THERMAL SCIENCE

International Scientific Journal

RELAMINARIZATION OF WALL TURBULENCE BY HIGH-PRESSURE RAMPS AT LOW REYNOLDS NUMBERS

ABSTRACT
Reverse transition from the turbulent towards the laminar flow regime was investigated experimentally by progressively increasing the pressure up to 400 MPa in a fully developed pipe flow operated with silicone oil as the working fluid. Using hot-wire anemometry, it is shown indirectly that at low Reynolds numbers a rapid increase in pressure modifies the turbulence dynamics owing to the processes which induce the effects caused by fluid compressibility in the region very close to the wall. The experimental results confirm that under such circumstances, the traditional mechanism responsible for self-maintenance of turbulence in wall-bounded flows is altered in such a way as to lead towards a state in which turbulence cannot persist any longer.
KEYWORDS
PAPER SUBMITTED: 2015-10-15
PAPER REVISED: 2016-04-15
PAPER ACCEPTED: 2016-04-18
PUBLISHED ONLINE: 2016-04-24
DOI REFERENCE: https://doi.org/10.2298/TSCI151015085S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Supplement 1, PAGES [S93 - S102]
REFERENCES
  1. Antonia R. A., Teitel, M., Kim, J. & Browne, L. W. B. 1988 Low-Reynolds number effects in a fully developed turbulent channel flow. J. Fluid Mech. 236, 579-605.
  2. Först P., Werner F. & Delgado A. 2000 The viscosity of water at high pressures- especially at subzero degrees centigrade. Rheologica Acta 39, 566-573.
  3. Frohnapfel, B. 2007a Flow control of near-wall turbulence. PhD Thesis, University of Erlangen-Nuremberg.
  4. Frohnapfel, B., Lammers, P., Jovanović, J. & Durst, F. 2007b Interpretation of the mechanism associated with turbulent drag reduction in terms of anisotropy invariants. J. Fluid Mech. 577, 457-466.
  5. Jovanović, J. & Hillerbrand, R. 2005 On peculiar property of the velocity fluctuations in wall-bounded flows. J. Thermal Sci. 9, 3-12.
  6. Kim, J., Moin, P. & Moser, R. 1987 Turbulence statistics in a fully developed channel flow at low Reynolds numbers. J. Fluid Mech. 177, 133-166.
  7. Kuroda, A., Kasagi, N. & Hirata, M. 1993 Direct numerical simulation of the turbulent plane Couette-Poiseuille flows: effects of mean shear on the near wall turbulence structures. Proc. Ninth Symp. on Turbulent Shear Flows, Kyoto, Japan, pp. 8.4.1-8.4.6.
  8. Lumley, J. L. & Newman, G. 1977 The return to isotropy of homogeneous turbulence. J. Fluid Mech. 82, 161-178.
  9. Moser, R. D., Kim, J. & Mansour, N. N. 1999 Direct numerical simulation of turbulent channel flow up to Re = 590. Phys. Fluids 11, 943-945.
  10. Narasimha, R. & Sreenivasan, K.R. 1979 Relaminarization of fluid flows. Adv. Appl. Mech. 19, 221-309.
  11. Rauh, C. 2008 Modellierung und Simulation von Kurzzeit-Ultra-Hochdruckprocessen. Dissertation, Universität Erangen-Nürnberg.
  12. Regulski, W. 2009 Investigations of temperature fluctuations under high pressure by means of hot-wire anemometry. Bachelor Thesis, University of Erlangen-Nuremberg.
  13. Rotta, J. 1956 Experimenteller Beitrag zur Entstehung turbulenter Strömung im Rohr. Ing.-Arch. 24, 258-281.
  14. Stewart, R.W. 1969 Turbulence (Motion picture film). Educational Services, Inc. Cambridge, MA.
  15. Volkert, R. 2006 Bestimmung von statistischen Turbulenzgrößen auf der Basis von direkten numerischen Simulationen der turbulenten Kanalströmung. Dissertation, Universität Erlangen-Nürnberg.

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