Experimental and Numerical Investigations of Fluid Flow Behaviors in a Biomass Cyclone Burner

Pasymi Pasymi; Yogi W Budhi; Yazid Bindar

doi:10.22146/ajche.56708

Experimental and Numerical Investigations of Fluid Flow Behaviors in a Biomass Cyclone Burner

https://doi.org/10.22146/ajche.56708

Pasymi Pasymi^(1*), Yogi W Budhi⁽²⁾, Yazid Bindar⁽³⁾

(1) Department of Chemical Engineering, Faculty of Industrial Technology, Universitas Bung Hatta, Padang, Indonesia
(2) Energy and Processing System Research Group, Study Programmes of Chemical, Bioenergy and Chemurgy Engineerings, Faculty of Industrial Technology, Institut Teknologi Bandung, Indonesia
(3) Energy and Processing System Research Group, Study Programmes of Chemical, Bioenergy and Chemurgy Engineerings, Faculty of Industrial Technology, Institut Teknologi Bandung, Indonesia
(*) Corresponding Author

Abstract

A combination of the experimental and numerical methods was used to investigate the fluid flow behaviors in a proposed cyclone burner. Recirculation flow and pressure drop, two of the important fluid flow behaviors that affect the burner's performance, have been studied here. Experimentally, the recirculation flow phenomenon in the burner was observed through paper slices dynamic in a transparent burner, and pressure drop was measured using a tube manometer. Meanwhile numerically, the fluid flow behaviors were simulated using the standard k-e turbulence model, under Ansys-Fluent software. The simulation results showed that, at a certain value of inlet aspect ratio (R_IA) and initial tangential intensity (I_IT), especially for high I_IT, the recirculation flow phenomenon was clearly observed in the center of the burner cylinder which closely resembles a tornado-tail. The indication of existence recirculation flow was also found from the experiment results. The study also exhibited that the results of simulated static pressure drop were closely approaching the experiment results, particularly for I_IT values £ 4.3. The mean deviation of static pressure between the simulation and the experiment results, for a varied range of R_IA and I_IT,was about 15%. From the results above, it was obvious that fluid flow behaviors (recirculation flow and static pressure) in the proposed cyclone burner are greatly influenced by the R_IA and I_IT values, where the I_IT effect was more significant compared to the R_IA. This study also suggests that, the standard k-e turbulence model could be relied upon to well predict the behaviors of fluid flow in the proposed cyclone burner, at low to moderate swirl intensities.

Keywords

Cyclone burner; Initial tangential intensity; Inlet aspect ratio; Paper slice dynamic; Recirculation flow; Static pressure; Standard k- turbulence model; Tornado-tail

Full Text:

PDF

References

Al-Abdeli, Y. M., and Masri, A. R. (2015). “Review of laboratory swirl burners and experiments for model validation,” Exp. Therm. Fluid Sci., 69, 178-196.
Arnao, J. H. S., Ferreira, D. J. O., Santos, C. G., Alvarez, J. E., Rangel, L. P., and Park, S. W. (2015). “The influence of swirl burner geometry on the sugar-cane bagasse injection and burning,” International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 9, 798-801.
Aydin, O., Avci, M., Markal, B., and Yazici, Y. (2014). “An experimental study on the decaying swirl flow in a tube,” Int. Commun. Heat Mass, 55, 22-28.
Baxter, L., Ip, L., Lu, H., and Tree, D. (2005). “Distinguishing biomass combustion characteristics and their implications for sustainable energy,” The 5^th Asia Pacific Conference on Combustion, University of Adelaide, Australia.
Bindar, Y. (2017). Rekayasa komputasi aliran turbulen multidimensi, 1^st ed., ITB Press, Bandung, Indonesia.
Bourgouin, J. F., Moeck, J., Durox, D., Schuller, T., and Candel, S. (2013). “Sensitivity of swirling flows to small changes in the swirler geometry,” CR Mecanique, 341, 211–219.
Chen, J., Haynes, B. S., and Fletcher, D. F. A. (1999). “Numerical and experimental study of tangentially injected swirling pipe flows,” The 2^ndInternational Conference on CFD in the Minerals and Process Industries CSIRO, Melbourne, Australia, 485 – 490.
Gawali, S. S., and Bhambere, M. B. (2015). “Computational fluid dynamics approach for predictions of cyclone separator pressure drop,” IJMERR, 4 (1), 374-377.
Jakirlic, S., Hanjalic, K., and Tropea, C. (2002). “Modelling rotating and swirling turbulent flows: A perpetual challenge,” AIAA J, 40, 1984-1996.
Nemoda, S., Bakic, V., Oka, S., Zivkovic, G., and Crnomarkavic, N. (2005). “Experimental and numerical investigation of gaseous fuel combustion in swirl chamber,” Int. J. Heat Mass Tran., 48, 4623–4632.
Pasymi, Budhi, Y. W., and Bindar, Y. (2017). “Effect of initial tangential intensity on the fluid dynamic characteristics in tangential burner,” MATEC Web Conf., 101, 1-6.
Pasymi, Budhi, Y. W., and Bindar, Y. (2018). “Three dimensional cyclonic turbulent flow structures at various geometries, inlet-outlet orientations, and operating conditions,” J. Mech. Eng. Sci., 12 (4), 4300-4328.
Reis, L. C. B. S., Carvalho, J. A. Jr., Nascimento, M. A. R., Rodrigues, L. O., Dias, F. L. G., and Sobrinho, P. M. (2014). “Numerical modeling of flow through an industrial burner orifice,” Appl. Therm. Eng., 67, 201-213.
Vassilev, S. V., Vassileva, C. G., and Vassilev, V. S. (2015). “Advantages and disadvantages of composition and properties of biomass in comparison with coal: An overview,” Fuel, 158, 330–350.
Vazquez, J. A. R. (2012). A computational fluid dynamics investigation of turbulent swirling burner, Thesis, University of Zaragoza, Spain.
Ziqiang, L. V., Guangqiang, L., and Yingjie, L. (2016). “Optimization Study on Bias Angle of a Swirl Burner with Tangential Inlet Air,” International Journal of Smart Home, 10, 171-180.

DOI: https://doi.org/10.22146/ajche.56708

Article Metrics

Abstract views : 5023 |

Refbacks

There are currently no refbacks.

Username
Password
Remember me