CFD Analysis of Diverse Serrated Blade Configuration Effects on Fluid Flow of a Modified Centrifugal Fan

Zaimar Zaimar

Abstract


This paper presents the effects of the diverse serrated blade configurations on airflow characteristics of a modified centrifugal fan by CFD. This application is investigated to improve aerodynamic performance. These configurations (USB, ISB, USB, OSB) are simulated at the impeller speed levels by CFD. Then tested to analyze airflow characteristic values by ANCOVA test. The simulation results show that the BSB configuration achieves the high static pressures about 84.5-214.7 Pa in the wall zone. While the ISB generates the lower TKE in all the zones, except in the impeller zone. It produces about 0.51-12.47 m2s-2 TKE in the wall zone. The ANCOVA test results indicate that the effects of the impeller speed are very significant (a < 0.01) on the airflow characteristics in all the zones, except for static pressure is no significant (a > 0.05) in the impeller and fluid flow zone. The effect of the serrated blade configurations is very significant on static pressure in the inlet and wall zone, and significant (a < 0.05) in the fluid flow zone. While it is very significant to air velocity in the impeller, fluid flow, and wall zone, and very significant on TKE in the impeller zone and outlet zone.

Keywords


fluid flow characteristics, centrifugal fan, CFD analysis, serrated blade configurations

Full Text:

PDF

References


A. Corsinia, G. Delibraa, F. Rispolia, A.G. Sheardb, P. Venturini, Aerodynamic simulation of a high-pressure centrifugal fan for process industries. Proceedings of ASME Turbo Expo 2013: Turbine Technical Conference and Exposition GT2013, San Antonio, Texas, USA. (2013) 1-11.

Z. Lin, Numerical study of aerodynamic characteristics on the wind turbine airfoil with leading and tailing edges protuberances. Fluid Machinery. 40 (2012) 27-31.

S. Thangarasu, G. Sureshkannan, N.V. Dhandapani, Design and experimental investigation of forward curved, backward curved and radial blade impellers of centrifugal blower. Australian Journal of Basic and Applied Sciences. 9(1), (2015) 71-75.

R. Raggoth Singh, M. Natraj, Optimizing impeller geometry for performance enhancement of a centrifugal blower using Taguchi quality concept. International Journal of Engineering and Science Technology. 4(10), (2012) 4308-4314.

E. Rusiński, P. Moczko, P. Odyjas, D. Pietrusiak, Investigation of vibrations of a main centrifugal fan used in mine ventilation. Archives of Civil and Mechanical Engineering. (2014) 1-11. http://www.elsevier.com/locate/acme.

M. Younsi, F. Bakir, S. Kouidri, R. Rey, Influence of impeller geometry on the unsteady flow in a centrifugal fan: numerical and experimental analyses. International Journal of Rotating Machinery. (2007) 1-10.

F. Tong, W.Y. Qiao, L. Wang, Noise reduction mechanism of bionic airfoil trailing edge serrations. Acta Aeronaut Astronaut Sinica. 36 (2015) 2911–2922.

T.V. VaIkov, C.S. Tan, Effect of upstream rotor vertical disturbances on the time-average performance of axial compressor stators, part I - Framework of technical approach and wake stator blade interactions. ASME Journal of Turbomachinery. 121 (1999) 377–386.

W. Zhang, J. Yuan, B. Zhou, H. Li, Y. Yuan, The influence of axial-flow fan trailing edge structure on internal flow Advances. Advance in Mechanical Engineering. 10(11), (2018) 1-12.

L.E. Jones, R.D. Sandberg, Acoustic and hydrodynamic analysis of the flow around an aerofoil with trailing-edge serrations. Journal of Fluid Mechanics. 706 (2012) 295-322.

K.L. Hansen, R.M. Kelso, B.B. Dally, Performance variations of leading-edge tubercles for distinct airfoil profiles. American Institute of Aeronautics and Astronautics Journal. 49(1), (2011)185-194.

Dhyanjyoti Deb Nath, K. Viswanath, A.B. Patel, Experimental study of the effect of serrations on axial flow fan blade trailing edge. Proceedings of the ASME 2016 International Mechanical Engineering Congress and Exposition, Phoenix-Arizona, USA. (2016) 1-12.

H.A. Alawadhi, A.G. Alex, Y.H. Kim, CFD analysis of wing trailing edge vortex generator using serrations. EPJ Web of Conferences 67, 02002. (2014) 1-8.

Zaimar, Mursalim, H. Abbas, Supratomo. Performance testing of a modified centrifugal fan with serrated blade impeller. International Journal of Science and Technology Research. 6(10), (2017) 122-125.

F. Shigehisa, I. Taku, H. Kiyotaka, M. Fukaya, Platform technology for computational fluid dynamics supporting design of system products - from power plants and industrial machinery to home appliances. Hitachi Review. 61(6), (2012) 244-248.

P. Chand, S. Rai, Centrifugal fan impeller design with optimization of blade. International Journal of Applied Engineering Research. 7(11), (2012) 2082-2089.

A.T. Oyelami, S.B. Adejuyigbe, Waheed, A.K. Ogunkoya, D. Iliya, Analysis of radial-flow impellers of different configurations. The Pacific Journal of Science and Technology. 13(1), (2012) 24-33.

S.K. Kusekar, A.K. Lavnis, Optimization of critical parts of centrifugal blower by modal & CFD analysis. International Journal of Innovative Research in Advanced Engineering. 1(12), (2014) 69-82.

Lumamaheswararao, M. Ashif, Fluid flow analysis of centrifugal fan by using FEM. International Journal of Mechanical Engineering and Technology. 7(2), (2016) 45-51.

F. Tuakia. The fundamentals of CFD by using FLUENT. Publishing of Informatika, Bandung, Indonesia. (2008) 9-194.

P.N. Son, J.W. Kim, E.Y. Ahn, Effects of bell mouth geometries on the flow rate of centrifugal. Journal of Mechanic and Science Technology. 25(9), (2011) 2267-2276.

L. Anggraini, Analysis of Porosity Defects in Aluminum as Part Handle Motor Vehicle Lever Processed by High-pressure Die Casting. In IOP Conference Series: Materials Science and Engineering, 367 (2018) 012039.

C. Arce Leon, R. Merino-Martinez, D. Ragni, F. Avallone, F. Scarano, S. Probsting, M. Snellen, D. Simons, J. Madsen, Effect of trailing edge serration-low misalignment on airfoil noise emissions. Journal of Sound and Vibrations. 405 (2017) 19-33.

M. Howe, Noise produced by a sawtooth trailing edge. Journal of the Acoustical Society of America. 90 (1991) 482-487.

Austin H. Church, Centrifugal fan and blower. John Wiley & Son. Publishing. New York (1986).

L. Anggraini, Y. Natsume, K. Ameyama, Effect of particle shape on dispersion formation of harmonic microstructure of Si3N4-ZrO2. In Materials Science Forum. 864 (2016) 47-51.

S. Khelladi, S. Kouidri, F. Bakir, R. Rey, Flow study in the impeller-diffuser interface of a vane centrifugal fan. ASME Journal of Fluid Engineering. 127 (2005) 495-502.

X. Liu, H. Kamliya Jawahar, M. Azarpeyvand, Wake development of airfoils with serrated trailing edges. In 22nd AIAA CEAS Aeroacoustics Conference. American Institute of Aeronautics and Astronautics. (2016) 1-21.




DOI: http://dx.doi.org/10.33021/jmem.v6i1.1246

Refbacks

  • There are currently no refbacks.


This work is licensed under a
Creative Commons Attribution-NonCommercial 4.0 International License