Abstract
The aim of this study was to investigate the pressure drop coefficient and the static pressure difference related to the natural vortex length and to evaluate the results for gas-particle applications. CFD simulations were carried out using a numerical technique which had been verified previously. Results obtained from the numerical simulations were compared with the experimental data. Analysis of the results showed that the pressure drop coefficient decreases with the increasing inlet velocity, becoming almost constant above a certain value of the inlet velocity. The reason is that the effect of viscous forces decreases at high Reynolds numbers. The pressure drop coefficient also decreases with the increasing exit pipe diameter and decreasing exit pipe length.
Similar content being viewed by others
References
Chuah, T. G., Gimbun, J., & Choong, T. S. Y. (2006). A CFD study the effect of cone dimensions on sampling aerocyclones performance and hydrodynamics. Powder Technology, 162, 126–132. DOI: 10.1016/j.powtec.2005.12.010.
Cortés, C., & Gil, A. (2007). Modeling the gas and particle flow inside cyclone separators. Progress in Energy and Combustion Science, 33, 409–452. DOI: 10.1016/j.pecs.2007.02.001.
Gil, A., Cortés, C., Romeo, L. M., & Velilla, J. (2002). Gasparticle flow inside cyclone diplegs with pneumatic extraction. Powder Technology, 128, 78–91. DOI: 10.1016/s0032-5910(02)00215-2.
Gimbun, J., Chuah, T. G., Fakhru’l-Razi, A., & Choong, T. S. Y. (2005). The influence of temperature and inlet velocity on cyclone pressure lose: a CFD study. Chemical Engineering and Processing, 44, 7–12. DOI: 10.1016/j.cep.2004.03.005.
Gong, A. L., & Wang, L. Z. (2004). Numerical study of gas phase flow in cyclones with the repds. Aerosol Science and Technology, 38, 506–512. DOI: 10.1080/02786820490449548.
Hoekstra, A. J., Derksen, J. J., & Van Den Akker, H. E. A. (1999). An experimental and numerical study of turbulent swirling flow in gas cyclones. Chemical Engineering Science, 54, 2055–2065. DOI: 10.1016/s0009-2509(98)00373-x.
Hoffmann, A. C., De Groot, M., & Hospers, A. (1996). The effect of the dust collection system on the flowpat-tern and separation efficiency of a gas cyclone. The Canadian Journal of Chemical Engineering, 74, 464–470. DOI: 10.1002/cjce.5450740405.
Karagoz, I., & Avci, A. (2005). Modelling of the pressure drop in tangential inlet cyclone separators. Aerosol Science and Technology, 39, 857–865. DOI: 10.1080/02786820500295560.
Karagoz, I., & Kaya, F. (2007). CFD investigation of the flow and heat transfer characteristics in a tangential inlet cyclone. International Communications in Heat and Mass Transfer, 34, 1119–1126. DOI: 10.1016/j.icheatmasstransfer.2007.05.017.
Karagoz, I., & Kaya, F. (2009). Evaluations of turbulence models for highly swirling flows in cyclones. Computer Modeling in Engineering & Sciences, 43, 111–130. DOI: 10.3970/cmes.2009.043.111.
Kaya, F., & Karagoz, I. (2008). Performance analysis of numerical schemes in swirling turbulent flows in cyclones. Current Science, 94, 1273–1278.
Kaya, F., & Karagoz, I. (2009). Numerical investigation of performance characteristics of a cyclone prolonged with a dipleg. Chemical Engineering Journal, 151, 39–45. DOI: 10.1016/j.cej.2009.01.040.
Kenny, L. C., & Gussman, R. A. (1997). Characterizations and modelling of a family of cyclone aerosol preseparators. Journal of Aerosol Science, 28, 677–688. DOI: 10.1016/s0021-8502(96)00455-7.
Kim, J. C., & Lee, K. W. (1990). Experimental study of particle collection by small cyclones. Aerosol Science and Technology, 12, 1003–1015. DOI: 10.1080/02786829008959410.
König, C., Büttner, H., & Ebert, F. (1991). Desing data for cyclones. Particle & Particle Systems Characterization, 8, 301–307. DOI: 10.1002/ppsc.19910080155.
Lapple, C. E., (1951). Processes use many collector types. Chemical Engineering, 58, 144–151.
Moore, M. E., & McFarland, A. R. (1993). Performance modelling of single-inlet aerosol sampling cyclones. Environmental Science & Technology, 27, 1842–1848. DOI: 10.1021/es00046a012.
Obermair, S., Woisetschläger, J., & Staudinger, G. (2003). Investigation of the flow pattern in different dust outlet geometries of a gas cyclone by laser Doppler anemometry. Powder Technology, 138, 239–251. DOI: 10.1016/j.powtec.2003.09.009.
Qian, F. P., Zhang, J. G., & Zhang, M. Y. (2006). Effects of the prolonged vertical tube on the separation performance of a cyclone. Journal of Hazardous Materials, 136, 822–829. DOI: 10.1016/j.jhazmat.2006.01.028.
Stairmand, C. J. (1951). The design and performance of cyclone separators. Transaction of the Institution of Chemical Engineers, 29, 356–383.
Upton, S. L., Mark, D., Douglass, E. J., Hall, D. J., & Griffiths, W. D. (1994). A wind tunnel evaluation of the physical sampling efficiencies of three bioaerosol samplers. Journal of Aerosol Science, 25, 1493–1501. DOI: 10.1016/0021-8502 (94)90220-8.
Xiang, R. B., Park, S. H., & Lee, K. W. (2001). Effects of cone dimension on cyclone performance. Journal of Aerosol Science, 32, 549–561. DOI: 10.1016/s0021-8502(00)00094-x.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kaya, F., Karagoz, I. Experimental and numerical investigation of pressure drop coefficient and static pressure difference in a tangential inlet cyclone separator. Chem. Pap. 66, 1019–1025 (2012). https://doi.org/10.2478/s11696-012-0214-7
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.2478/s11696-012-0214-7