Buradasınız

Experimental Study and CFD Simulation of Two-Phase Flow around Square-Section Obstacle in Enlarging Channel

Journal Name:

Publication Year:

Author Name
Abstract (2. Language): 
The purpose of this paper is to study the two-phase flow around 2d body in enlargement channel. Experimental studies have been conducted in a channel with air-water flow for different air and water discharges. The experiments have been aimed to visualize the two phase flow phenomena as well as to studies effect of pressure difference through channel with square-section cylinder for different water discharges (20, 25, 35 and 45 l/min) and different air discharges (10, 20, 30 and 40 l/min). This paper concerns the model of a bubble population in the frame of an ensemble averaged two-phase flow formulation. The ability of the moment density approach to represent bubble population size distribution within a multidimensional CFD code based on the two-fluid model is studied. The results showed that the when air or water discharge increases, the mean pressure difference increases. Also, in a water slug, bubbles move slower than the liquid..
FULL TEXT (PDF): 
148-160

REFERENCES

References: 

[1] ANSYS 13.0 Help, FLUENT Theory Guide, Mixture Multiphase Model.
[2] Edurne Carpintero Rogero, “Experimental Investigation of Developing Plug and Slug Flows”, TECHNISCHE UNIVERSITÄT MÜNCHEN, thesis, 2009.
[3] Esam M. Abed and Riyadh S. Al-Turaihi, “Experimental Study of Two-Phase Flow around Hydrofoil in Open Channel”, Journal for Mechanical and Materials Engineering, Iraq, 2012, accepted and submitted for publication.
[4] FABRE Jean, “Modelling and Control of Two-Phase Flow Phenomena”, International Centre for Mechanical Sciences, Udine (Italy), September 9-13, 2002.
[5] Hameed Balassim Mahood, Hala A. Kadim and Ali N. Salim, “Effect of Flow-Obstruction Geometry on Pressure Drops in Horizontal Air-Water Two-Phase Flow”, Al-Qadisiya Journal For Engineering Sciences, Vol. 2, No. 3, 2009, pp. 641-653.
[6] Introductory FLUENT Notes, FLUENT v6.3, Fluent User Services Center, December 2006.
[7] Matev Dular, Rudolf Bachert, Bernd Stoffel and Brane irok, “Influence of the Velocity Distribution at the Inlet Boundary on the CFD Prediction of Local Velocity and Pressure Fields around a Hydrofoil”, Experimental Thermal and Fluid Science 32 (2008) 882–891.
International Journal of Science and Engineering Investigations, Volume 2, Issue 18, July 2013 154
www.IJSEI.com ISSN: 2251-884 3 Paper ID: 21813-22
[8] Morten Kjeldsen and Roger E. A. Arndt, “Blade Load Dynamics in
Cavitating and Two Phase Flows”, Proceedings of the 7th International
Symposium on Cavitation, CAV2009 – Paper No. 113, August 17-22,
2009, Ann Arbor, Michigan, USA.
[9] Riyadh S. Al-Turaihi, “Experimental Investigation of Two-Phase Flow
(Gas –Liquid) Around a Straight Hydrofoil in Rectangular Channel”,
Journal of Babylon University, Iraq, 2012, accepted and submitted for
publication.
[10] Seyoung Lee, Changjin Lee, and Soohyung Park, “Unsteady Cavitation
and Cryogenic Flow Cavitation around 2D Body”, IEEE computer
society, Fifth International Conference on Computational Science and
Applications, DOI 10.1109/ICCSA.2007.49. pp. 306-312.
[11] Shakouchi, T., Tian, D., and Ida, T., “Behavior of Wake flow Behind
Obstacle in a Gas–Liquid Vertical Two-Phase flow (Effects of Blockage
Ratio)”, (in Japanese). Trans. JSME, B, 2001, 67 (654), pp. 377–383.
[12] T Degawa and T Uchiyama, “Numerical Simulation of Bubbly Flow
Around Two Tandem Square-Section Cylinders by Vortex Method”, J.
Mechanical Engineering Science, Proc. IMechE Vol. 222 Part C, 2008,
pp. 225-234.
[13] Xiangbin Li, Guoyu Wang, Mindi Zhang and Wei Shyy, “Structures of
Supercavitating Multiphase Flows”, International Journal of Thermal
Sciences 47 (2008), pp. 1263–1275].
[14] M. Young, The Technical Writer's Handbook. Mill Valley, CA:
University Science, 1989.

Thank you for copying data from http://www.arastirmax.com