Document Type : Research Paper

Authors

Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran

Abstract

The addition of proper-sized metal particles to the effervescent fuels increases the density of exhaust gases from rocket engines and the trust consequently. On the other hand, the addition of non-optimized metal particles causes combustion instability. Thus, the separation of proper-sized metal particles is under consideration here. In this study, among different methods of separating the aluminum particles in the fuel, the performance of the conic cyclone separator has been studied and the numerical results are validated by the experimental data. With a specific particle diameter and speed, the less the angle between the cyclone body and the horizon, the higher would be the separation efficiency. In addition, for increasing the separation efficiency of aluminum particle, it is recommended to build the inlet section of cyclone at the lower point of cyclone body.

Keywords

[1]  Flagan, R.C. and Seinfeld, J.H., Fundamental of Air Pollution Engineering, Chapter 7: Removal of Particle from Gas Stream, California Institute of Technology, 2012, pp. 391-392,
[2]   Wilcox, D.C., Turbulence Modeling for CFD, 2nd edition Los Angeles: DCW Industries, Inc, 1994.
[3]   Wang, L., Theoritical Study of Cyclone Design, (PhD Thesis), Graduated Studies of Texas A & M University, May 2004.
[4]   Ahangar, M. and Ebrahimi, E., “The Effect of Chemical Kinetics Modeling of Combustion of Gaseous Oxidizing on Solid Fuel,” Journal of Space Science and Technology, Vol. 3, No. 1, 2001, pp. 1-12.
[5]   Altmeyer, S., Mathieu, V., Jullemier, S., Contal, P., Midoux, N., Rode, S. and Leclerc, J.-P., “Comparison of Different Models of Cyclone Prediction Performance Forvarious Operating Conditions using a General Software,” Chemical Engineering and Processing Journal, Vol. 43, No. 4, 2004, pp. 511–522.
[6]   UMUCU, Y., “Investigation of Separation Performance of Dense Medium Cyclone using Computer Simulation,” Physicochemical Problems of Mineral Processing, Vol. 51, No. 1, 2015, pp. 303−314.
[7]   Slack, M.D., Prasad, R.O., Bakker, A. and Boysan, F., “Advances in Cyclone Modeling using Unstructured Grid,” Institution of Chemical Engineers, Vol. 78, No. 8, 2000, pp.1098–1104.
[8]   Wang, L., Parnell, C.B., Shaw, B.W. and Lacey, R.E. “A Theoretical Approach for Predicting Number of Turnsand Cyclone Pressure Drop,”American Society of Agricultural and Biological Engineers, Vol. 49, No. 2, 2006, pp.491−503.
[9]   Chu, K.W., Wang, B., Yu, A.B. and Vince, A., “Modeling the Multiphase Flow in Dense Medium Cyclones,” 7th International Conference on CFD in the Minerals and ProcessIndustries, Australia, 9-11 December 2009.
[10] Azadi, M., Azadi, M. and Mohebbi, A., “A CFD Study of the Effect of Cyclone Size on its Performance Parameters,” Journal of Hazardous Materials, Vol. 182, No.1–3, 2010, pp. 835–841.
[11] Vince, A., Barnettc, G.D. and Barnett, P.J., “How to Optimize Design and Operation of Dense Medium Cyclones in Coal Preparation,” Minerals Engineering Journal, Vol. 62, 2014,  pp. 55–65.
[12] Xiong, Z., Ji, Z. and Wu, X., “Development of a Cyclone Separator with High Efficiency and Low Pressure Drop in Axial Inlet Cyclones,” Journal of Powder Technology, Vol. 253, No. 1, 2014, pp. 644–649.
[13] Hsiao, T.Ch., Huang, Sh.H. Hsu, Ch.W., Chen, Ch. Ch. “Effects of the Geometric Configuration on Cyclone Performance,” Journal of Aerosol Science, Vol. 86, No. 1, 2015, pp. 1–12.
[14] Li, X., Song, J., Sun, G., Jia, M,. Yan, C., Yang, Z., Wei, Y., “Experimental Study on Natural Vortex Length in a Cyclone Separator,” The Canadian Journal of Chemical Engineering, Accepted Author Manuscript. doi:10.1002/ cjce. 22598, 2016.
[15] Umucu, Y., “Investigation ofSeparation Performance of Dense Medium Cyclone using Computer Simulation,” Physicochemical Problems of Mineral Processing, Vol. 51, No. 1, 2015, pp. 303−314.
[16] Oh, J., Choi, S., Kim, J., “Numerical Simulation of an Internal Flow Field in a Uniflow Cyclone Separator,” Powder Technology, Vol. 274, No. 1, 2015, pp. 135–145.
[17] Oh, J., Choi, S. and Kim, J., ”Numerical Simulation of an Internal Flow Field in a Uniflow Cyclone Separator,” Powder Technology, Vol. 274, 2015, pp. 135–145.
[18] Shin, M., Kim, H. and Jang, D., “A Numerical and Experimental Study on a High Efficiency Cyclone Dust Separator for High Temperature and Pressurized Environments,” Applied Thermal Engineering, Vol. 25, No. 1, 2005, pp. 1821-­1835.
[19] Menter, F.R., “Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications,” AIAA Journal, Vol. 32, No. 8, 1994, pp. 1598-1605.
[20] Bagdi, P., Bhardwaj, P. and Sen, A.K., “Analysis and Simulation of a Micro Hydrocyclone Device for Particle Liquid Separation,” Journal of Fluids Engineering, Vol. 134, No. 2,  2012, 9 pages.
[21] Wang, L., Parnell, C.B., Shaw, B.W., “A Study of the Cyclone Fractional Efficiency Curves,” Agricultural Engineering International: the CIGR Journal of Scientific Research and Development. Vol. 2, No. 1, 2002, pp. 1-14.
[22] Brennan, M.S., Narasimha, M. and Holtham, P.N., “Multiphase Modelling of Hydrocyclones–Prediction of Cut-Size,” Minerals Engineering, Vol. 20, No. 4, 2007, pp. 395-406.