YÜKSEK VERİMLİ SWIFT SİKLONDA GİRİŞ HIZININ ETKİSİNİN İNCELENMESİ

Nihan Babaoğlu; İbrahim Ararat

doi:10.17780/ksujes.1521558

EN TR

INVESTIGATION OF INLET VELOCITY EFFECT ON HIGH EFFICIENCY SWIFT CYCLONE

Abstract

In this paper, study is performed in order to demonstrate the effect of the inlet velocity on collection efficiency and pressure drop by using numerical methods. Numerical simulation is accomplished for six different inlet velocity at range of 10-20 m/s. Gridding was done with small elements to obtain better results. Turbulent flow is analyzed using Reynolds Stress Model (RSM). Set appropriate time steps to model the transient processes is 1000 for 5 ms with 10000 iterations. Rosin-Ramler size distribution method was used to calculate particle mass fraction. Centrifugal force increased because that for value of inlet velocity increases, the tangential velocity enhances. Based on this situation, it can be concluded that for the particles to move towards the cyclone wall and the collection efficiency increased. It is seen that with the increase in inlet velocity, the pressure drop increases greatly due to the increase in the rotating flow. It is expressed that this change increases as exponentially. It is also observed pressure on cyclone wall markedly increased with the increase inlet velocity.

Keywords

YÜKSEK VERİMLİ SWIFT SİKLONDA GİRİŞ HIZININ ETKİSİNİN İNCELENMESİ

Öz

Bu çalışmada, yüksek verimli Swift (HE) tipi siklonda giriş hızının toplama verimi ve basınç kayıplarına olan etkileri nümerik yöntemler kullanılarak ortaya koyulmuştur. 10 – 20 m/s aralığında altı farklı giriş hız değerleri için çalışmalar yapılmıştır. Yapılan bu çalışmada daha iyi sonuçlar elde etmek için küçük elemanlar ile gridleme işlemi gerçekleştirilmiştir. Reynolds Stress Model (RSM) türbülanslı akışın çözümlenmesi için kullanılmıştır. Çözümleme her bir giriş hızı için transient olarak 5 ms’lik 1000 adım ile 10000 iterasyon ile gerçekleştirilmiştir. Partiküllerin boyut dağılımlarını belirlemek için Rosin-Rammler metodu kullanılmıştır. Giriş hızının artışı teğetsel hızı artırdığı için partiküle etki eden santrifüj kuvveti artmıştır. Buda partiküllerin siklon duvarına doğru hareket etmesine ve toplama veriminin artmasına neden olmuştur. Giriş hızının artışı ile birlikte, dönen akışın artması dolayısıyla basınç kaybının çok fazla arttığı görülmektedir. Bu değişimin üstel olarak arttığı görülür. Giriş hızının artışıyla birlikte siklon duvarlarında oluşan basınçlar aşırı derecede artmıştır.

Anahtar Kelimeler

References

Babaoğlu, N., Parvaz, F., Hosseini, S., & Elsayed, K. (2021). Giriş kesit şeklinin çok girişli bir gaz siklonun performansı üzerindeki etkisi. Powder Technology.
Barth, W. (1956). Design and Layout of the Cyclone Separator on the Basis of New Investigations. Brennstow-Wäerme-Kraft (BWK), 8(4), 1–9.
Brar, L. S., & Elsayed, K. (2018). Analysis and optimization of cyclone separators with eccentric vortex finders using large eddy simulation and artificial neural network. Separation and Purification Technology, 207, 269–283. https://doi.org/10.1016/j.seppur.2018.06.013
Elsayed, K., & Lacor, C. (2011a). Modeling, analysis and optimization of aircyclones using artificial neural network, response surface methodology and CFD simulation approaches. Powder Technology, 212(1), 115–133. https://doi.org/10.1016/j.powtec.2011.05.002
Elsayed, K., & Lacor, C. (2011b). Numerical modeling of the flow field and performance in cyclones of different cone-tip diameters. Computers and Fluids, 51(1), 48–59. https://doi.org/10.1016/j.compfluid.2011.07.010
Elsayed, K., & Lacor, C. (2013). The effect of cyclone vortex finder dimensions on the flow pattern and performance using LES. Computers and Fluids, 71, 224–239. https://doi.org/10.1016/j.compfluid.2012.09.027
Gao, Y., Zhang, M., Guo, J., & Xu, L. (2022). Impact of the oxidation of SO2 by NO2 on regional sulfate concentrations over the North China Plain. Atmospheric Pollution Research, 13(3), 101337. https://doi.org/https://doi.org/10.1016/j.apr.2022.101337
Gimbun, J., Chuah, T. G., Fakhru’l-Razi, A., & Choong, T. S. Y. (2005). The influence of temperature and inlet velocity on cyclone pressure drop: A CFD study. Chemical Engineering and Processing: Process Intensification, 44(1), 7–12. https://doi.org/10.1016/j.cep.2004.03.005

Griffiths, W. D., & Boysan, F. (1996). Computational fluid dynamics (CFD) and empirical modelling of the performance of a number of cyclone samplers. Journal of Aerosol Science, 27(2), 281–304. https://doi.org/https://doi.org/10.1016/0021-8502(95)00549-8
Hoffmann, A. C., Stein, L. E., & Bradshaw, P. (2003). Gas cyclones and swirl tubes: principles, design and operation. Appl. Mech. Rev., 56(2), B28--B29.
Iozia, D. L., & Leith, D. (1989). Effect of cyclone dimensions on gas flow pattern and collection efficiency. Aerosol Science and Technology, 10(3), 491–500. https://doi.org/10.1080/02786828908959289
Jion, M. M. M. F., Jannat, J. N., Mia, M. Y., Ali, M. A., Islam, M. S., Ibrahim, S. M., Pal, S. C., Islam, A., Sarker, A., Malafaia, G., Bilal, M., & Islam, A. R. M. T. (2023). A critical review and prospect of NO2 and SO2 pollution over Asia: Hotspots, trends, and sources. Science of The Total Environment, 876, 162851. https://doi.org/https://doi.org/10.1016/j.scitotenv.2023.162851
Lapple, C. E. (1950). Gravity and Centrifugal Separation. American Industrial Hygiene Association Quarterly, 11(1), 40–48. https://doi.org/10.1080/00968205009344283
Leith, D., & Mehta, D. (1973). Cyclone performance and design. Atmospheric Environment (1967), 7(5), 527–549. https://doi.org/https://doi.org/10.1016/0004-6981(73)90006-1
Lim, K. S., Kwon, S. B., & Lee, K. W. (2003). Characteristics of the collection efficiency for a double inlet cyclone with clean air. Journal of Aerosol Science, 34(8), 1085–1095. https://doi.org/10.1016/S0021-8502(03)00079-X
Raoufi, A., Shams, M., Farzaneh, M., & Ebrahimi, R. (2008). Numerical simulation and optimization of fluid flow in cyclone vortex finder. Chemical Engineering and Processing: Process Intensification, 47(1), 128–137. https://doi.org/10.1016/j.cep.2007.08.004
Safikhani, H. (2016). Modeling and multi-objective Pareto optimization of new cyclone separators using CFD, ANNs and NSGA II algorithm. Advanced Powder Technology, 27(5), 2277–2284. https://doi.org/10.1016/j.apt.2016.08.017
Safikhani, H., Akhavan-Behabadi, M. A., Nariman-Zadeh, N., & Mahmood Abadi, M. J. (2011). Modeling and multi-objective optimization of square cyclones using CFD and neural networks. Chemical Engineering Research and Design, 89(3), 301–309. https://doi.org/10.1016/j.cherd.2010.07.004
Sun, X., & Yoon, J. Y. (2018). Multi-objective optimization of a gas cyclone separator using genetic algorithm and computational fluid dynamics. Powder Technology, 325, 347–360. https://doi.org/10.1016/j.powtec.2017.11.012
Venkatesh, S., Suresh Kumar, R., Sivapirakasam, S. P., Sakthivel, M., Venkatesh, D., & Yasar Arafath, S. (2020). Multi-objective optimization, experimental and CFD approach for performance analysis in square cyclone separator. Powder Technology, 371, 115–129. https://doi.org/10.1016/j.powtec.2020.05.080
Wasilewski, M., & Brar, L. S. (2017). Optimization of the geometry of cyclone separators used in clinker burning process: A case study. Powder Technology, 313, 293–302. https://doi.org/10.1016/j.powtec.2017.03.025
Wasilewski, M., Singh Brar, L., & Ligus, G. (2021). Effect of the central rod dimensions on the performance of cyclone separators - optimization study. Separation and Purification Technology, 274(May), 119020. https://doi.org/10.1016/j.seppur.2021.119020
Yang, H., Wang, N., Cao, Y., Meng, X., & Yao, L. (2023). Effects of helical fins on the performance of a cyclone separator: A numerical study. Advanced Powder Technology, 34(1), 103929. https://doi.org/https://doi.org/10.1016/j.apt.2022.103929
Yoshida, H. (2013). Effect of apex cone shape and local fluid flow control method on fine particle classification of gas-cyclone. Chemical Engineering Science, 85, 55–61. https://doi.org/https://doi.org/10.1016/j.ces.2012.01.060
Zhao, B., Su, Y., & Zhang, J. (2006). Simulation of gas flow pattern and separation efficiency in cyclone with conventional single and spiral double inlet configuration. Chemical Engineering Research and Design, 84(12 A), 1158–1165. https://doi.org/10.1205/cherd06040

Details

Primary Language

Turkish

Subjects

Air Pollution and Gas Cleaning

Journal Section

Research Article

Authors

Nihan Babaoğlu ^*
0000-0003-3356-9407
Türkiye

İbrahim Ararat
0009-0000-1626-1334
Türkiye

Publication Date

June 3, 2025

Submission Date

July 24, 2024

Acceptance Date

August 19, 2024

Published in Issue

Year 2025 Volume: 28 Number: 2

DOI

https://doi.org/10.17780/ksujes.1521558

IZ

https://izlik.org/JA27FD37KG

Cite

RIS / Bibtex

APA

Babaoğlu, N., & Ararat, İ. (2025). YÜKSEK VERİMLİ SWIFT SİKLONDA GİRİŞ HIZININ ETKİSİNİN İNCELENMESİ. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 28(2), 583-591. https://doi.org/10.17780/ksujes.1521558