Abstract
The primary aim of this paper is to assess the performance of k-ε turbulence models by means of adopting various near wall treatments to simulate the flow within a sharp 90° 3-D turning diffuser. The Computational Fluid Dynamics (CFD) results were validated quantitatively and qualitatively with the experimental results (using Particle Image Velocimetry (PIV)). The standard k-ε adopted curvature correction and enhanced wall treatment of y+ ≈ 1.2–1.7 appears as the best validated model, producing minimal deviation with comparable flow structures to the experimental cases.
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References
Fox, R.W., Kline, S.J.: Flow regime data and design methods for curve subsonic diffusers. J. Basic Eng. ASME 84, 303–312 (1962)
Sagi, C.J., Johnson, J.P.: The design and performance of two-dimensional curved diffusers. J. Basic Eng. ASME 89, 715–731 (1967)
Sullerey, R.K., Chandra, B., Muralidhar, V.: Performance comparison of straight and curved diffusers. J. Def. Sci. 33, 195–203 (1983)
Chong, T.P., Joseph, P.F., Davies, P.O.A.L.: A parametric study of passive flow control for a short, high area ratio 90° curved diffuser. J. Fluids Eng. 130, 1–12 (2008)
Nordin, N., Karim, Z.A.A., Othman, S., Raghavan, V.R.: The performance of turning diffusers at various inlet conditions. Appl. Mech. Mater. 465–466, 597–602 (2014)
Seth, N.H.N., Nordin, N., Othman, S., Raghavan, V.R.: Investigation of flow uniformity and pressure recovery in a turning diffuser by means of baffles. Appl. Mech. Mater. 465–466, 526–530 (2014)
Gan, G., Riffat, S.B.: Measurement and computational fluid dynamics prediction of diffuser pressure-loss coefficient. Appl. Energy 54(2), 181–195 (1996)
El-Askary, W.A., Nasr, M.: Performance of a bend diffuser system: experimental and numerical studies. Comput. Fluids 38, 160–170 (2009)
Jakirlic, S., Kadavelil, G., Kornhaas, M., Schäfer, M., Sternel, D.C., Tropea, C.: Numerical and physical aspects in LES and hybrid LES/RANS of turbulent flow separation in a 3-D diffuser. Int. J. Heat Fluid Flow 31, 820–832 (2010)
Nordin, N., Karim, Z.A.A., Othman, S., Raghavan, V.R.: Effect of varying inflow reynolds number on pressure recovery and flow uniformity of 3-D turning diffuser. Appl. Mech. Mater. 699, 422–428 (2015)
Nordin, N., Raghavan, V.R., Othman, S., Karim, Z.A.A.: Compatibility of 3-D turning diffusers by means of varying area ratios and outlet-inlet configuration. ARPN J. Eng. Appl. Sci. 7(6), 708–713 (2012)
Nordin, N., Raghavan, V.R., Othman, S., Karim, Z.A.A.: Numerical investigation of turning diffuser performance by varying geometric and operating parameters. Appl. Mech. Mater. 229–231, 2086–2093 (2012)
Yang, Y.T., Hou, C.F.: Numerical calculation of turbulent flow in symmetric two-dimensional diffusers. Acta Mech. 137, 43–54 (1999)
Xu, D., Leschziner, M.A., Khoo, B.C., Shu, C.: Numerical prediction of separation and reattachment of turbulent flow in axisymmetric diffuser. Comput. Fluids 26, 417–423 (1997)
Gopaliya, M.K., Kumar, M., Kumar, S., Gopaliya, S.M.: Analysis of performance characteristics of S-shaped diffuser with offset. Aerosp. Sci. Tech. 11, 130–135 (2007)
Gopaliya, M.K., Goel, P., Prashar, S., Dutt, A.: CFD analysis of performance characteristics of S-shaped diffusers with combined horizontal and vertical offsets. Comput. Fluids 40, 280–290 (2011)
Ibrahim, I.H., Ng, E.Y.K., Wong, K., Gunasekaran, R.: Effects of centerline curvature and cross-sectional shape transitioning in the subsonic diffuser of the F-5 fighter jet. J. Mech. Sci. Technol. 22, 1993–1997 (2008)
Mohamed, M.S., Djebedjian, B., Rayan, M.A.: Experimental and numerical studies of flow in a logarithmatic spiral curved diffuser. In: ASME Fluids Engineering Summer Conference, Boston (2000)
ANSYS FLUENT User’s Guide, release 14.0, Canonsburg, USA (2011)
Nordin, N., Karim, Z.A.A., Othman, S., Raghavan, V.R.: Design and development of low subsonic wind tunnel for turning diffuser application. Adv. Mater. Res. 614-615, 586–591 (2013)
Nordin, N., Karim, Z.A.A., Othman, S., Raghavan, V.R.: Verification of fully developed flow entering diffuser and particle image velocimetry procedures. Appl. Mech. Mater. 465-466, 1352–1356 (2014)
Kim, J., Moin, P., Moser, R.: Turbulence statistics in fully developed channel flow at low Reynolds number. J. Fluid Mech. 177, 297–302 (1987)
Nordin, N., Karim, Z.A.A., Othman, S., Raghavan, V.R.: Verification of 3-D stereoscopic PIV operation and procedures. Int. J. Eng. Technol. 12(4), 19–26 (2012)
Spalart, P.R., Shur, M.L.: On the sensitization of turbulence models to rotation and curvature. Aerosp. Sci. Tech. 1(5), 297–302 (1997)
Acknowledgements
This work was financially supported by the Fundamental Research Grant Scheme (FRGS) of the Ministry of Higher Education, Malaysia and was conducted in Universiti Tun Hussein Onn Malaysia (UTHM). Immeasurable appreciation is extended to Head of Department of Energy and Thermofluid Engineering of UTHM, Dr. Azmahani Sadikin and Head of Center for Energy and Industrial Environment Studies, Dr. Mohd Faizal Mohideen Batcha for all provided research supports. A sense of gratitude is also devoted to Mr. Zainal Abidin Alias (Assistant Engineer of PIV Laboratory, UTHM) and Mr. Rosman Tukiman (Assistant Engineer of CFD Laboratory, UTHM) for the technical-lab assist.
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Nordin, N. et al. (2017). Assessment of Turbulence Model Performance Adopted Near Wall Treatment for a Sharp 90° 3-D Turning Diffuser. In: Mohamed Ali, M., Wahid, H., Mohd Subha, N., Sahlan, S., Md. Yunus, M., Wahap, A. (eds) Modeling, Design and Simulation of Systems. AsiaSim 2017. Communications in Computer and Information Science, vol 751. Springer, Singapore. https://doi.org/10.1007/978-981-10-6463-0_23
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DOI: https://doi.org/10.1007/978-981-10-6463-0_23
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