Results 101 to 110 of about 8,352,814 (137)

Improvement of Turbocharger Aeroacoustic Performance When Opening Wastegate

Lecture Notes in Mechanical Engineering, 2022
R. I. Rakhmatov, V. E. Krutolapov, A. G. Vetoshnikov   +2 more
exaly   +2 more sources

Characterization of Aerodynamic and Aeroacoustic Performance of Bladeless Fans

, 2019
Bladeless fans are well known for their unique shape and efficient performance, which have a great impact on the fan industry. At present, there are few studies on the bladeless fan and the research on the improvement of fan design is a lack. Therefore, the study on the performance of the bladeless fan with different design is the main purpose of this ...
Li, Ang
openaire   +2 more sources

Aeroacoustic Performance of Fractal Spoilers

AIAA Journal, 2012
One of the major environmental problems facing the aviation industry is that of aircraft noise. The work presented in this paper, done as part of the EU’s OPENAIR Project, looks at reducing spoiler noise whilst maintaining lift and drag characteristics through means of large-scale fractal porosity.
Nedic, J., Ganapathisubramani, B., Vassilicos, J.C., Borée, J., Brizzi, L.E., Spohn, A.   +5 more
openaire   +2 more sources

Aeroacoustic Performance of an Airfoil with Circulation Control

16th AIAA/CEAS Aeroacoustics Conference, 2010
Aerodynamic noise originating from slotted slats represents the major component of high-lift related airframe noise. Therefore slatless high-lift systems are considered effective means to reduce airframe noise. The major challenge within the design of such systems is to compensate the deficit in maximum lift performance for slatless wings, and the ...
Pott-Pollenske, Michael, Pfingsten, Kai Christoph   +1 more
openaire   +2 more sources

Aeroacoustic metastructure: Toroidal propeller with enhanced acoustic and aerodynamic performance

International Journal of Mechanical Sciences
Meng Guo
exaly   +2 more sources

Aerodynamic and Aeroacoustic Performance of a Skewed Rotor

Volume 6: Turbo Expo 2003, Parts A and B, 2003
This paper presents an experimental investigation and numerical simulation of the aerodynamic and aeroacoustic performance of an axial-flow fan with skewed rotating blades in the design and off-design operation. The blade is designed with a forward skew angle for which the stacking line is directed towards the rotating direction on the circumferential ...
Na Cai, Jianzhong Xu, Azemi Benaissa
openaire   +1 more source

Contrasting Code Performances for Computational Aeroacoustics of Jets

12th AIAA/CEAS Aeroacoustics Conference (27th AIAA Aeroacoustics Conference), 2006
The numerical propagation of subcritical Tollmein-Schlichting (T-S), inviscid vortical and cut-on acoustic waves is explored. For the former case, the performances of the very different NEAT, NTS, HYDRA, FLUXp and OSMIS3D codes is studied. A modest/coarse hexahedral computational grid that starkly shows differences between the different codes and ...
Paul Tucker, John Coupland, Simon Eastwood, Yan Liu, Richard Jefferson-Loveday, Oubay Hassan   +5 more
openaire   +1 more source

Effect of aeroacoustic interactions on ejector performance

Journal of Aircraft, 1975
References 1 Spreiter, J. R. and Sacks, A. H., "The Rolling Up of the Trailing Vortex Sheet and Its Effect on the Downwash Behind Wings," Journal of the Aeronautical Sciences, Vol. 18, January 1951, pp. 21-32. Brown, C. D., "Aerodynamics of Wake Vortices," AIAA Journal, Vol. 11, April 1973, pp. 531-536. 3 Mason, W. H. and Marchman, J.
openaire   +1 more source

Aeroacoustics and Performance Modeling of a Counter-Rotating Propfan

Volume 7: Turbomachinery, Parts A, B, and C, 2010
This paper presents a method for design and analysis of counter-rotating propfans with respect to performance and aeroacoustics. The preliminary design method generates the ideal optimum propeller design corrected for losses in terms of profile and compressibility drag.
Martin Olausson, Richard Avella´n, Niklas So¨rman, Filip Rudebeck, Lars-Erik Eriksson   +4 more
openaire   +1 more source

Optimization of the Aerodynamic and Aeroacoustic Performance of an Axial-Flow Fan

AIAA Journal, 2014
A multidisciplinary optimization to simultaneously enhance the aerodynamic and aeroacoustic performance of an axial-flow fan was performed. Flow analysis through the axial-flow fan was conducted by solving three-dimensional steady and unsteady Reynolds-averaged Navier–Stokes equations with the shear-stress transport turbulence model.
Jin-Hyuk Kim, Bavuudorj Ovgor, Kyung-Hun Cha, Joo-Hyung Kim, Seungbae Lee, Kwang-Yong Kim   +5 more
openaire   +1 more source