RANS-informed fan noise prediction: separation and extrapolation of rotor wake and potential field

2014 ◽  
Author(s):  
Robert Jaron ◽  
Antoine Moreau ◽  
Sebastien Guerin
Keyword(s):  
Potential Field ◽  
Noise Prediction ◽  
Fan Noise ◽  
Rotor Wake

Application of acoustic analogy to automotive engine-cooling fan noise prediction

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 1095-1098 ◽  
Author(s):  
Jeonghan Lee ◽  
Kyungseok Cho ◽  
Soogab Lee
Keyword(s):  
Noise Prediction ◽  
Acoustic Analogy ◽  
Fan Noise ◽  
Automotive Engine ◽  
Engine Cooling ◽  
Cooling Fan

scholarly journals The Influence of an Upstream Pylon on Open Rotor Aerodynamics at Angle of Attack

2019 ◽  
Vol 141 (2) ◽  
Author(s):  
Nishad G. Sohoni ◽  
Cesare A. Hall ◽  
Anthony B. Parry
Keyword(s):  
Potential Field ◽  
Angle Of Attack ◽  
Separated Flow ◽  
Rotor Blades ◽  
Tip Vortex ◽  
Rotor Wake ◽  
Rotor Aerodynamics ◽  
Open Rotor ◽  
Urans Cfd ◽  
Work Done

The aerodynamic impact of installing a horizontal pylon in front of a contra-rotating open rotor engine, at take-off, was studied. The unsteady interactions of the pylon's wake and potential field with the rotor blades were predicted by full-annulus URANS CFD calculations at 0 deg and 12 deg angle of attack (AoA). Two pylon configurations were studied: one where the front rotor blades move down behind the pylon (DBP), and one where they move up behind the pylon (UBP). When operating at 12 deg AoA, the UBP orientation was shown to reduce the rear rotor tip vortex sizes and separated flow regions, whereas the front rotor wake and vortex sizes were increased. In contrast, the DBP orientation was found to reduce the incidence variations onto the front rotor, leading to smaller wakes and vortices. The engine flow was also time-averaged, and the variation in work done on average midspan streamlines was shown to depend strongly on variation in incidence, along with a smaller contribution related to change of radius.

Experimental Validation of Ducted Low-Speed Cooling Fan Noise Prediction Methods Including Broadband Scattering

2016 ◽  
Author(s):  
Julien Christophe ◽  
Korcan Kucukcoskun ◽  
Dominic Lallier-Daniels ◽  
Marlène Sanjosé ◽  
Stephane Moreau
Keyword(s):  
Experimental Validation ◽  
Prediction Methods ◽  
Noise Prediction ◽  
Fan Noise ◽  
Low Speed ◽  
Cooling Fan

Fan Noise Prediction using CFD and its Validation

2007 ◽  
Author(s):  
Kishor Udawant ◽  
Vikram Tandon ◽  
S. Raju ◽  
Krishan Chugh ◽  
Ashok Khondge
Keyword(s):  
Noise Prediction ◽  
Fan Noise

One, no one and one hundred thousand methods for low-speed fan noise prediction

Noise Notes ◽  
2010 ◽  
Vol 9 (4) ◽  
pp. 17-33
Author(s):  
Damiano Casalino ◽  
Stephane Moreau ◽  
Michel Roger
Keyword(s):  
Noise Prediction ◽  
Fan Noise ◽  
Low Speed

Fan Noise Prediction Using Unsteady CFD Analysis

2002 ◽  
Author(s):  
Naoki Tsuchiya ◽  
Yoshiya Nakamura ◽  
Akihiro Yamagata ◽  
Hidekazu Kodama ◽  
Osamu Nozaki ◽  
...  
Keyword(s):  
Noise Prediction ◽  
Cfd Analysis ◽  
Fan Noise

Broadband fan noise prediction using single-airfoil theory

2006 ◽  
Vol 54 (1) ◽  
pp. 5-14 ◽  
Author(s):  
Michel Roger ◽  
Stephane Moreau ◽  
Alain Guedel
Keyword(s):  
Noise Prediction ◽  
Fan Noise
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