OJFD  Vol.5 No.4 , December 2015
LDA Study of Particulate Flow in a Channel with Deformed Surface Locations and with Flow Conditioner
ABSTRACT
Hydroabrasion in particulate flows plays an important role in various industrial and natural processes. To predict the effects of particulate flow and the resulting phenomena such as erosion/abrasion in a pipeline, channel or a fitting, it is essential to characterize the effects in a simple standardized geometry. For this purpose, it is vital to initially understand the particulate flow behavior and motion in such geometries. In the present work, two series of experimental works by application of the LDA measurement technique were successfully conducted. First, the particulate flow behavior at downstream of a flow conditioner inside a channel with square cross-section was investigated. Shorter lengths for fully development of velocity profile by using the self-constructed flow conditioner were observed. Moreover, the flow at downstream of the conditioner was modeled with the CFD tool (ANSYS-CFX V. 14.57) and the simulation results were compared and validated by the LDA experimental data. Better agreement between the simulation results and experimental data was observed in the fully developed region. However, there are some deviations due to the actual pressure loss through the experimental loop and the calculated pressure loss value, which includes some assumptions for the loss coefficients. Furthermore, the particulate flow behavior and vortex generation inside the deformed locations of a channel surface were studied in detail. With the help of the Matlab program, it was possible to calculate and visualize the velocity vectors for each measured point inside the channel accurately.

Cite this paper
Azimian, M. and Bart, H. (2015) LDA Study of Particulate Flow in a Channel with Deformed Surface Locations and with Flow Conditioner. Open Journal of Fluid Dynamics, 5, 353-363. doi: 10.4236/ojfd.2015.54035.
References
[1]   Huber, N. and Sommerfeld, M. (1994) Characterization of the Cross-Sectional Particle Concentration Distribution in Pneumatic Conveying Systems. Powder Technology, 79, 191-210.
http://dx.doi.org/10.1016/0032-5910(94)02823-0

[2]   Tsuji, Y. and Morikawa, Y. (1982) LDV Measurements of an Air-Solid Two-Phase Flow in a Horizontal Pipe. Journal of Fluid Mechanics, 120, 385-409.
http://dx.doi.org/10.1017/S002211208200281X

[3]   Ozgoren, M., Pinar, E., Sahin, B. and Akilli, H. (2011) Comparison of Flow Structures in the Downstream Region of a Cylinder and Sphere. International Journal of Heat and Fluid Flow, 32, 1138-1146.
http://dx.doi.org/10.1016/j.ijheatfluidflow.2011.08.003

[4]   Kumara, W.A.S., Elseth, G., Halvorsen, B.M. and Melaaen, M.C. (2010) Comparison of Particle Image Velocimetry and Laser Doppler Anemometry Measurement Methods Applied to the Oil-Water Flow in Horizontal Pipe. Flow Measurement and Instrumentation, 21, 105-117.
http://dx.doi.org/10.1016/j.flowmeasinst.2010.01.005

[5]   Ristic, S., Ilic, J., Cantrak, D., Ristic, O. and Jankovic, N. (2012) Estimation of Laser-Doppler Anemometry Measuring Volume Displacement in Cylindrical Pipe Flow. Thermal Science, 16, 1027-1042.
http://dx.doi.org/10.2298/TSCI1204027R

[6]   Durst, F., Kikura, H., Lekakis, I., Jovanovic, J. and Ye, Q. (1996) Wall Shear Stress Determination from Near-Wall Mean Velocity Data in Turbulent Pipe and Channel Flows. Experiments in Fluids, 20, 417-428.
http://dx.doi.org/10.1007/BF00189380

[7]   Azimian, M., Lichti, M. and Bart, H.-J. (2014) Investigation of Particulate Flow in a Channel by Application of CFD, DEM and LDA/PDA. The Open Chemical Engineering Journal, 8, 1-11.
http://dx.doi.org/10.2174/1874123101408010001

[8]   Schlüter, T. and Merzkirch, W. (1996) PIV Measurements of the Time-Averaged Flow Velocity Downstream of Flow Conditioners in a Pipeline. Flow Measurement and Instrumentation, 7, 173-179.
http://dx.doi.org/10.1016/S0955-5986(96)00016-7

[9]   Xiong, W., Kalkühler, K. and Merzkirch, W. (2003) Velocity and Turbulence Measurements Downstream of Flow Conditioners. Flow Measurement and Instrumentation, 14, 249-260.
http://dx.doi.org/10.1016/S0955-5986(03)00031-1

[10]   Spearman, E., Sattary, J. and Reader-Harris, M. (1996) Comparison of Velocity and Turbulence Profiles Downstream of Perforated Plate Flow Conditioners. Flow Measurement and Instrumentation, 7, 181-199.
http://dx.doi.org/10.1016/S0955-5986(96)00013-1

[11]   Frattolillo, A. and Massarotti, N. (2002) Flow Conditioners Efficiency a Comparison Based on Numerical Approach. Flow Measurement and Instrumentation, 13, 1-11.
http://dx.doi.org/10.1016/S0955-5986(02)00017-1

[12]   Manshoor, B., Nicolleau, F. and Beck, S. (2011) The Fractal Flow Conditioner for Orifice Plate Flow Meters. Flow Measurement and Instrumentation, 22, 208-214.
http://dx.doi.org/10.1016/j.flowmeasinst.2011.02.003

[13]   Gordeev, S., Groschel, F., Heinzel, V., Hering, W. and Stieglitz, R. (2014) Numerical Study of the Flow Conditioner for the IFMIF Liquid Lithium Target. Fusion Engineering and Design, 89, 1751-1757.
http://dx.doi.org/10.1016/j.fusengdes.2013.12.010

[14]   Liu, C. and Shen, Y.M. (2009) A Three-Dimensional Solid-Liquid Two-Phase Turbulence Model with the Effect of Vegetation in Non-Orthogonal Curvilinear Coordinates. Science in China Series G: Physics, Mechanics and Astronomy, 52, 1062-1073.
http://dx.doi.org/10.1007/s11433-009-0136-8

 
 
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