Performance and Flow Condition of Contra-rotating Small-sized Axial Fan at Partial Flow Rate [PDF]
International Journal of Fluid Machinery and Systems, 2010 Small-sized axial fans are used as air cooler for electric equipments. But there is a strong demand for higher power of fans according to the increase of quantity of heat from electric devices. Therefore, higher rotational speed design is conducted, although, it causes the deterioration of efficiency and the increase of noise.
Toru Shigemitsu +3 more
openaire +3 more sources
International Journal of Fluid Machinery and Systems, 2012 T. Shigemitsu, J. Fukutomi, H. Shimizu
semanticscholar +3 more sources
Experimental study of the instationary flow between two ducted Counter-rotating rotors [PDF]
, 2013 The purpose of this work is to study experimentally the aerodynamic characteristics of a subsonic counter-rotating axial-flow fans system operating in a ducted configuration.
BAKIR, Farid +4 more
core +6 more sources
Time-domain harmonic balance method for aerodynamic and aeroelastic simulations of turbomachinery flows [PDF]
, 2013 A time-domain Harmonic Balance method is applied to simulate the blade row interactions and vibrations of state- of-the-art industrial turbomachinery configurations. The present harmonic balance approach is a time-integration scheme that turns a periodic
Besicovitch A.S. +5 more
core +1 more source
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
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
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
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
Intake ground vortex characteristics [PDF]
, 2011 The development of ground vortices when an intake operates in close proximity to the ground has been studied computationally for several configurations including front and rear quarter approaching flows as well as tailwind arrangements.
MacManus, David G. +2 more
core +1 more source
Trailing edge noise theory for rotating blades in uniform flow [PDF]
, 2013 This paper presents a new formulation for trailing edge noise radiation from rotating blades based on an analytical solution of the convective wave equation. It accounts for distributed loading and the effect of mean flow and spanwise wavenumber.
Agarwal, Anurag +2 more
core +1 more source