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Simulation of a Transonic Axial Flow Fan of a High Bypass Ratio Turbofan Engine During Flight Conditions

H. Z. Hassan(1*), M. H. Gobran(2), A. Abd El-Azim(3)

(1) Department of Mechanical Engineering, College of Engineering, Alfaisal University, Saudi Arabia
(2) Mechanical Power Engineering Department, Faculty of Engineering, Zagazig University, Egypt
(3) Mechanical Power Engineering Department, Faculty of Engineering, Zagazig University, Egypt
(*) Corresponding author


DOI: https://doi.org/10.15866/irease.v7i1.1338

Abstract


In the present work, the three dimensional (3-D) flow field through the transonic axial flow fan and the intake of the CF6-50 high bypass ratio turbofan engine is investigated under the flight cruise conditions (11000 meter altitude and 0.85 Mach number). The fan in concern has a large diameter, about 2.18 m. The fan blade is tapered, highly twisted, and has a long span, about 0.65 m, with a low hub to tip ratio, about 0.4. The actual dimensions of both the fan and its intake are used in the present simulation. Moreover, the steady, compressible, turbulent, and viscous 3-D air flow field in both the intake and fan is solved and investigated. The computational domain is a periodic sector of an angle (360/38) through both the fan and the intake zones.  At the design speed and pressure ratio, slight deviations of the efficiency, about 1.27%, and mass flow rate, about 1%, compared with those listed in the engine manual are obtained by the simulation. Furthermore, results of simulation show shock waves formed in the passage at the trailing edge of the suction side and propagate towards the opposite blade pressure side for the outer third of blade span.
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Keywords


Transonic Flow; Flight Conditions; Axial Flow Fan; High Bypass Ratio; Turbofan Engine; 3-D Flow; Shock Wave

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References


C. Tona, P. A. Raviolo, L. F. Pellegrini, S. de Oliveira Júnior, Exergy and thermoeconomic analysis of a turbofan engine during a typical commercial flight, Energy, vol. 35 n. 2, 2010, pp. 952-959.
http://dx.doi.org/10.1016/j.energy.2009.06.052

H. Z. Hassan, M. H. Gobran, A. Abd El-Azim, 3-D Flow Simulation through the Intake and Fan of Turbofan Engine at Take-Off Conditions, (2013) International Review of Aerospace Engineering (IREASE), 6 (1), pp. 1-8.

Neves, F.M.S.P., Barata, J.M.M., Silva, A.R.R., Numerical Study of the Mixing of Co-Axial Jets, (2011) International Review of Mechanical Engineering (IREME), 5 (5), pp. 876-883.

Elias E. Panagiotopoulos, Spyridon D. Kyparissis, Computational Flowfield Investigation of Store Separation Trajectories from Transonic Aircraft Wing, (2009) International Review of Aerospace Engineering (IREASE), 2 (3), pp. 139-144.

H. Z. Hassan, M. H. Gobran, A. Abd El-Azim, Performance Prediction for the Fan of the CF6-50 Turbofan Engine at the Off-Design Conditions, (2013) International Review of Aerospace Engineering (IREASE), 6 (1), pp. 9-17.

S. Thanigaiarasu, S. Elangovan, E. Rathakrishnan, Effect of Arc-Tabs on the Mixing Characteristics of Subsonic and Sonic Jets, (2010) International Review of Aerospace Engineering (IREASE), 3 (1), pp. 1-8.

Srivastava, B.K., Tewari, S.P., Prakash, J., Effect of welding parameters (heat input) on mechanical behavior and microstructure of submerged arc welded HSLA steel joints, (2012) International Review of Mechanical Engineering (IREME), 6 (6), pp. 1312-1320.

F. Brójo, J. Lebre, Effects of Intercooling and Regeneration in the Performance of a Turbofan Engine, (2010) International Review of Aerospace Engineering (IREASE), 3 (3), pp. 138-143.

VB Jaware, Amarjit Singh, SD More, SV Joshi, Computational Study of the Effect of Fence on the External and Internal Compression in a Mixed Inline Intake, (2011) International Review of Aerospace Engineering (IREASE), 4 (1), pp. 35-42.

Elias E. Panagiotopoulos, Spyridon D. Kyparissis, Dionissios P. Margaris, CFD Flowfield Analysis on the Atmospheric Flight of the Subsonic Robotic Hellenic UAV Pegasus II, (2010) International Review of Aerospace Engineering (IREASE), 3. (4), pp. 223-231.

M. Bugaj, Modern Systems in General Aviation Aircraft Maintenance, (2011) International Review of Aerospace Engineering (IREASE), 4 (2), pp. 70-75.

Haijun Zeng, Youchao Sun, The Compliance Design Study on Engine Induction System Icing and Ice Ingestion, (2012) International Review of Aerospace Engineering (IREASE), 5 (1), pp. 24-27.

Luís Rodrigues, Kouamana Bousson, Francisco Brójo, Thermodynamic Analysis and Optimization of a Scramjet Engine with Thermal Management System, (2010) International Review of Aerospace Engineering (IREASE), 3 (3), pp. 162-171.

K. M. Pandey, Gaurav Kumar, Anand Surana, Dhrubajyoti Deka, CFD Analysis of Airbus A380 Isolated Wings during Take-Off, Cruising and Landing and Comparison with Low Reynolds Number, High Lift S1223 Airfoil, (2012) International Review of Aerospace Engineering (IREASE), 5 (3), pp. 80-88.

F. De Domenico, A. Amoresano, C. De Nicola, Numerical Analysis of Anti-Icing and De-Icing Thermal Systems, (2012) International Review of Aerospace Engineering (IREASE), 5 (4), pp. 117-123.

K. M. Pandey, N. K. Saha, E. Ahmed, 3D CFD Analysis of Helicopter Rotor at Higher Rotational Speed, (2012) International Review of Aerospace Engineering (IREASE), 5 (2), pp. 54-61.

N. Bekka, R. Bessaïh, M. Sellam, Numerical Study of Transonic Flows Using Various Turbulence Models, (2008) International Review of Mechanical Engineering (IREME), 2 (4), pp. 599-607.

Jamei, S., Sidik, N.A.C., Malek, A.M.A., Mansor, S., Priyanto, A., Aerodynamic characteristics of rectangular-wing with reverse taper wing and anhedral angle in ground effect, (2012) International Review of Mechanical Engineering (IREME), 6 (7), pp. 1521-1528.

Michael Papadakis, Hsiung-Wei Yeong, Koji Shimoi, See-Ho Wong, Wind Tunnel Experiments with Simulated Ice Fragments, (2012) International Review of Aerospace Engineering (IREASE), 5 (5), pp. 221-228.

Douvi, E.C., Margaris, D.P., Aerodynamic performance investigation under the influence of heavy rain of a NACA 0012 airfoil for wind turbine applications, (2012) International Review of Mechanical Engineering (IREME), 6 (6), pp. 1228-1235.

L. M. Amoo, On the design and structural analysis of jet engine fan blade structures, Progress in Aerospace Sciences, vol. 60, 2015, pp.1-11.
http://dx.doi.org/10.1016/j.paerosci.2012.08.002

I. K. Jennions, M. G. Turner, Three-dimensional Navier-Stokes computation of transonic fan flow using an explicit flow solver and an implicit solver, Journal of Turbomachinery, ASME Transactions, vol. 115, 1993.
http://dx.doi.org/10.1115/1.2929232

M. G. Turner, I. K. Jennions, An investigation of turbulence modeling in transonic fans including a novel implementation of an implicit k-ϵTurbulence Model, Journal of Turbomachinery, ASME Transactions, vol. 115, 1993.
http://dx.doi.org/10.1115/1.2929231

F. Falchetti, H. Quiniou, L. Verdier, Aerodynamic design and 3d navier-stokes analysis of a high specific flow fan, International Gas Turbine and Aeroengine Congress, The Hague, Netherlands, June 13-16, 1994.
http://dx.doi.org/10.1115/94-gt-477

M. G. Beiler, T. H. Carolus, Computation and measurement of the flow in axial flow fans with skewed blades, Journal of turbomachinery, ASME Transactions vol. 121, 1999.
http://dx.doi.org/10.1115/1.2841234

CF6-50 turbofan engine repairing manual, Egypt Air Company, Cairo, Egypt.

T. Tschirner, M. Pfitzner, R. Merz, Aerodynamic optimization of an aeroengine bypass duct OGV-pylon configuration, proceedings of ASME turbo EXPO 2002, June 2002, Amsterdam, The Netherlands.
http://dx.doi.org/10.1115/gt2002-30493

P. Spalart, S. Allmaras, A one-equation turbulence model for aerodynamic flows, Technical Report AIAA-92-0439, American Institute of Aeronautics and Astronautics, 1992.

FLUENT documentation, User Guide Manual.
http://dx.doi.org/10.2172/10192753


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