Results 21 to 30 of about 7,091 (256)
Influence of design parameters on the global performances of low-speed counter-rotating axial-flow fans [PDF]
, 2014 The present work aims at experimentally investigating the effects of some parameters on the performances of a counter-rotating stage, and on the instationary flow between the rotors.
BAKIR, Farid +2 more
core +4 more sources
Numerical analysis of the hydrodynamic behaviour of immiscible metallic alloys in twin-screw rheomixing process [PDF]
, 2006 A numerical analysis by a VOF method is presented for studying the hydrodynamic mechanisms of the rheomixing process by a twin-screw extruder (TSE). The simplified flow field is established based on a systematic analysis of flow features of immiscible ...
Fan, Z, Tang, H, Wrobel, L C
core +1 more source
Advances in Mechanical Engineering, 2016 The contra-rotating fan is an electromechanical device in which electromagnetic force and aerodynamic force coordinate together. Its operation process is affected by multiple factors and is also coupled with multiple variables. In order to further reveal
Qian Wang, Dawei Meng
doaj +1 more source
Flow distortion measurements in convoluted aero engine intakes [PDF]
, 2015 The unsteady flowfields generated by convoluted aero engine intakes are major sources of instabilities that can compromise the performance of the downstream turbomachinery components.
Chiereghin, Nicola +2 more
core +2 more sources
Design and Experimental Validation of a Ducted Counter-rotating Axial-flow Fans System [PDF]
, 2012 An experimental study on the design of counter-rotating axial-flow fans was carried out. The fans were designed using an inverse method. In particular, the system is designed to have a pure axial discharge flow.
Bakir +21 more
core +8 more sources
Numerical study on aerodynamic noise performances of axial spacing in a contra-rotating axial fan [PDF]
, 2016 In order to study the effect of axial spacing on behaviors of aerodynamic performance and aerodynamic noises in a contra-rotating fan, the steady/unsteady Reynolds-averaged Navier-Stokes equations are solved by the numerical method in conjunction with a ...
Hengxuan Luan +4 more
core +2 more sources
Intake Ground Vortex Prediction Methods [PDF]
, 2011 For an aircraft turbofan engine in ground operations or during the take-off run a ground vortex can occur which is ingested and could potentially adversely affect the engine performance and operation.
MacManus, David G., Murphy, J. P.
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Meikuang AnquanTo enhance the aerodynamic performance of contra-rotating fan and ensure the safe working environment of mine, based on feedforward neural network agent model and genetic algorithm, the multi-objective optimization of contra-rotating fan double-row ...
Xinyu ZHANG, Hua JIANG, Wuqi GONG
doaj +1 more source
Experimental investigation on ducted counter-rotating axial flow fans [PDF]
, 2011 An experimental study on counter-rotating axial-flow fans was carried out. The fans of diameter D = 375 mm were designed using an inverse method. The counter-rotating fans operate in a ducted-flow configuration and the overall performances are measured ...
BAKIR, Farid +3 more
core +3 more sources
Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating Fan
International Journal of Aerospace Engineering, 2019 Because of the potential technical advantages, the contra-rotation technology has become a renewed interest in aviation and other applications. Contra-rotation increases efficiency in comparison with the single-rotor design, but this advantage is not ...
Hengxuan Luan +4 more
doaj +1 more source