Research of kinematic characteristics of abnormally viscous fluids in channels with high-speed variable geometry by visualization methods

Authors

  • Сергій Вікторович Носко National Technical University of Ukraine "Kiev Polytechnic Institute" Pobeda, 37, Kiev, Ukraine, 03056, Ukraine
  • Віктор Олексійович Булигін National Technical University of Ukraine "Kiev Polytechnic Institute" Pobeda, 37, Kiev, Ukraine, 03056, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2012.5559

Keywords:

high-speed variable geometry of channels, flow visualization

Abstract

The article analyzes existing methods of kinematics research of fluid flow in channels with variable geometry and their drawbacks. The method of visualization was suggested to study the vortex formation. It is realized by creating an experimental unit that is equipped with channels manufactured from polymethylmethacrylate with different cross-sectional areas (75x25mm; 50x25mm for sudden narrowing and 25x75mm; 25x50mm for sudden expansion of a channel) and "light knife" with a slit of 1 mm. There is a measurement of dependence of vortex formation nature from Reynolds number. The dependences of values of vortex formation zones on the nature of the flow and rheological properties of the fluid were determined, respective graphs were plotted. The developed experimental unit and the method of measurement of flow parameters made ​​it possible to supplement the information about the nature and peculiarities of destabilized flows associated with local resistance in channels. The study concerns the flow in pipelines with variable geometry

Author Biographies

Сергій Вікторович Носко, National Technical University of Ukraine "Kiev Polytechnic Institute" Pobeda, 37, Kiev, Ukraine, 03056

Ph.D., Associate Professor.

Department of Applied fluid mechanics and mechatronics

Віктор Олексійович Булигін, National Technical University of Ukraine "Kiev Polytechnic Institute" Pobeda, 37, Kiev, Ukraine, 03056

Student

Department of Applied fluid mechanics and mechatronics

References

  1. Boger D.V. and Rama Murtky A.V. Flow of Viscoelastic Fluid Through an Abrupt Contraction. - "Rkeol Acta", 1982, vol 11, pp. 61-69.
  2. Mokhov, I., Popov, DN Experimental study of local velocity profiles in a pipe to fluctuations in flow of viscous fluids / / Izv. High. Training. institutions, Mechanical Engineering. - 971. - № 7. - With. 91 -95.
  3. Oliver D.R. and Bragg R/ Flow Patterns in Viscoelastic Liquids Vpstream of Orifices/ - "Can. Journal Chem. Eng", 1983,vol. 51, pp. 287-290.
  4. Eckelmann H. Hot-wire and Hot-film Measurements in Oil. " Disa Information ". - 1985, January, pp. 16 - 20.
  5. Laser anemometry, remote spectroscopy and interferometry. Directory / VP Scraps, LF Kozlov, IV Potykevich, ed. MS Soskin - Kiev: Naukova Dumka, 1985.-759 p.
  6. Bellew Varela E. feature flow rate measurement in cylindrical channels. - "Sovrem.eksperim. Methods of investigation. Heat and Mass Transfer." Minsk, 1981, p. 162 - 167.
  7. Auhier A., V. Konstantinov On the possibility of studying the distribution of velocity in the flow of liquid through a combination of methods of holography and Doppler spectrum of photography. "Phys. - Tech. Inst USSR. / Preprint. /", 1980, № 688, p. 1 - 8.
  8. Rama Murthy A.V. and Boger D.V. Developing Velocity Profiles on the Downstream Side of a Contraction For Jnelastic Polimer Solution. - "Transactions of the Society of Rheology", 1971,vol. 15,
  9. №4, pp. 709 - 730.
  10. Nakamura R., Voshioka N. Higucki M. and Hirai Entry of a Tube. - "Journal of Chemical Engineering of Japan",- 1976, vol. 9, №4, pp. 291 - 293.
  11. Halmos A.L. and Boger D.V. The Behavioz of a Power - Law Fluid Flowing Through a Sudden Exponsion. - "AJCHE Journal", 1985, vol. 21, №3 (May), pp. 550-553.

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Published

2012-12-12

How to Cite

Носко, С. В., & Булигін, В. О. (2012). Research of kinematic characteristics of abnormally viscous fluids in channels with high-speed variable geometry by visualization methods. Eastern-European Journal of Enterprise Technologies, 6(7(60), 47–50. https://doi.org/10.15587/1729-4061.2012.5559

Issue

Vol. 6 No. 7(60) (2012): Applied mechanics

Section

Applied mechanics

License

Copyright (c) 2014 Сергій Вікторович Носко, Віктор Олексійович Булигін

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