Visualized Flow Structure inside an Odor-Removing Basin System with Multi-Stacked Porous Baffles

Article Preview

Abstract:

Baffles are frequently used to reduce flow speed and to change fluid passages by directly blocking oncoming flow. This study employed multi-stacked porous baffle obstructions to enhance the flow relaxations of water-soluble buoyant gases inside an odor removing basin system. We performed qualitative flow visualization by using tracing particles in working fluid to evaluate the effects of porous baffles. Particle image velocimetry technique was also employed to quantitatively analyze the flow field around the baffle regime. As a result, oncoming two-phase bubbly flow from the basin bottom regime was bent, passing the edge of a porous baffle plate. The main stream speed and momentum were effectively reduced by the installed porous flow obstruction devices.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

908-912

Citation:

Online since:

April 2015

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] H. Li and V. Kotteke, Effect of baffle spacing on pressure drop and local heat transfer in shell-and-tube heat exchangers for staggered tube arrangement, Int. J. Heat Mass Transfer. 41 (1998) 1303–1311.

DOI: 10.1016/s0017-9310(97)00201-9

Google Scholar

[2] Y. Li, G. He, X. Liu, G. Xiao and B. Li, CFD simulations of turbulent flow in baffle-filled membrane tubes, Separ. and Purif. Technol. 67 (2009) 14–20.

DOI: 10.1016/j.seppur.2009.02.022

Google Scholar

[3] H. Jamshidnia and Y. Takeda, Effect of standing baffle on the structure of flow in a rectangular open channel, Proc. 6th Int. Symp. On Ultrasonic Doppler Methods for Fluid Mech. and Fluid Eng. (2008) 81-84.

Google Scholar

[4] M. Zheng, J. Li, M.R. Mackley and J. Yao, The development of asymmetry for oscillatory flow within a tube containing sharp edge periodic baffles, Phys. of Fluids, 19 (2007) 1-15.

DOI: 10.1063/1.2799553

Google Scholar

[5] V. Roig, C. Suzanne and L. Masbernat, Experimental investigation of a turbulent bubbly mixing layer, Int. J. Multiphase Flow, 24 (1998) 35–54.

DOI: 10.1016/s0301-9322(97)00046-3

Google Scholar