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Philipp Dietrich and Marc Schneider
In applications, the acoustics of fans can differ significantly from the measurements of the standalone fan. This is due to disturbed inflow conditions, for example, caused by a heat exchanger upstream of an axial fan. Resolving the complex geometry and ...
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Pavel Kholodov and Stéphane Moreau
Large Eddy Simulation is performed using the NASA Source Diagnostic Test turbofan at approach conditions (62% of the design speed). The simulation is performed in a periodic domain containing one fan blade (rotor-alone configuration). The aerodynamic and...
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Jitendra A. Kewalramani, Zhenting Zou, Richard W. Marsh, Bruce G. Bukiet and Jay N. Meegoda
In this paper, nonlinearity associated with intense ultrasound is studied by using the one-dimensional motion of nonlinear shock wave in an ideal fluid. In nonlinear acoustics, the wave speed of different segments of a waveform is different, which causes...
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Manuel Henner, Bruno Demory, Mohamed Alaoui, Maxime Laurent and Benjamin Behey
Two blade curvatures representative of those found in automotive fans are compared. Measured performances are analyzed for forward and backward curved blades, either with or without heat-exchangers placed in front of them. The backward fan demonstrated g...
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Victor Mileshin
The paper reviews new experimental technologies for the development of advanced fans with high bypass ratios. Most of those developments are carried out in a highly specialized acoustic test facility available at the Central Institute of Aviation Motors ...
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