The accurate prediction of drag caused by bluff bodies present in aerospace applications, particularly at high angles of attack, was a challenge. An experimental and numerical investigation of a nacelle intended for fuselage-mounted aircraft engines was completed at several angles of attack between 0 deg and 45 deg with a Reynolds number of 6 × 105. Steady-flow simulations were conducted on hybrid grids using ANSYS fluent 15.0 with preference given to the realizable k–ε turbulence model. Both total drag and the pressure-to-viscous drag ratio increased with angle of attack as a consequence of greater flow separation on the suction surface. Near-field and far-field drag predictions had grid uncertainties below 2.5% and were within 10% of experiment, which were less than the uncertainties of the respective force balance and outlet traverse data at all angles of attack. Regions were defined on suction-side x-pressure force plots using the validated computational fluid dynamics (CFD) data-set that showed where and how much drag could be reduced. At 20 deg angle of attack, there was a potential to reduce up to 20% drag contained within the separated flow region.
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February 2018
Research-Article
Identifying Opportunities for Reducing Nacelle Drag
M. S. Zawislak,
M. S. Zawislak
Department of Mechanical and Materials
Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: maverick.zawislak@queensu.ca
Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: maverick.zawislak@queensu.ca
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D. J. Cerantola,
D. J. Cerantola
Department of Mechanical and
Materials Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: david.cerantola@queensu.ca
Materials Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: david.cerantola@queensu.ca
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A. M. Birk
A. M. Birk
Department of Mechanical and
Materials Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: birk@me.queensu.ca
Materials Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: birk@me.queensu.ca
Search for other works by this author on:
M. S. Zawislak
Department of Mechanical and Materials
Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: maverick.zawislak@queensu.ca
Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: maverick.zawislak@queensu.ca
D. J. Cerantola
Department of Mechanical and
Materials Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: david.cerantola@queensu.ca
Materials Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: david.cerantola@queensu.ca
A. M. Birk
Department of Mechanical and
Materials Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: birk@me.queensu.ca
Materials Engineering,
Queen's University,
Kingston, ON K7L 3N6, Canada
e-mail: birk@me.queensu.ca
Contributed by the Aircraft Engine Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 12, 2017; final manuscript received July 20, 2017; published online October 10, 2017. Editor: David Wisler.
J. Eng. Gas Turbines Power. Feb 2018, 140(2): 021202 (9 pages)
Published Online: October 10, 2017
Article history
Received:
July 12, 2017
Revised:
July 20, 2017
Citation
Zawislak, M. S., Cerantola, D. J., and Birk, A. M. (October 10, 2017). "Identifying Opportunities for Reducing Nacelle Drag." ASME. J. Eng. Gas Turbines Power. February 2018; 140(2): 021202. https://doi.org/10.1115/1.4037864
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