Results 231 to 240 of about 238,611 (303)
Some of the next articles are maybe not open access.
Journal of turbomachinery
An optimized axial slot casing treatment (OPCT) was designed that experimentally improves the stall margin by 7.31% with the efficiency gain of 1.94% at a design speed of 100% in a high-speed axial flow fan.
Yihan Li +6 more
semanticscholar +1 more source
An optimized axial slot casing treatment (OPCT) was designed that experimentally improves the stall margin by 7.31% with the efficiency gain of 1.94% at a design speed of 100% in a high-speed axial flow fan.
Yihan Li +6 more
semanticscholar +1 more source
Sources of Noise in Axial Flow Fans
The Journal of the Acoustical Society of America, 1971Experiments and theory relating to fan noise sources are reviewed with emphasis on axial flow machines. At supersonic rotor speeds, the steady shock pattern attached to a rotor is an efficient radiator of sound. In most practical cases of subsonic rotor operation, however, direct radiation from the rotor-locked pressure field is negligible compared ...
B. D. Mugridge, C. L. Morfey
openaire +1 more source
International Journal of Turbo & Jet-Engines
The present study aims to identify the suitable tip clearance and volumetric flow rates for low-speed axial flow fans. The performance of an axial fan depends on various parameters like fan speed, available tip clearance gap, volumetric flow rate, power ...
Jignesh R. Vala +3 more
semanticscholar +1 more source
The present study aims to identify the suitable tip clearance and volumetric flow rates for low-speed axial flow fans. The performance of an axial fan depends on various parameters like fan speed, available tip clearance gap, volumetric flow rate, power ...
Jignesh R. Vala +3 more
semanticscholar +1 more source
The Journal of the Acoustical Society of America, 2010
An axial flow fan of high efficiency and low noise level is provided. The fan includes a motor, an impeller having a plurality of blades around a hub fitted to the motor, and a fan casing having an air inlet on one side and an air outlet on the other, wherein a radial position with a maximum setting angle in a blade section, and a radial position with ...
openaire +1 more source
An axial flow fan of high efficiency and low noise level is provided. The fan includes a motor, an impeller having a plurality of blades around a hub fitted to the motor, and a fan casing having an air inlet on one side and an air outlet on the other, wherein a radial position with a maximum setting angle in a blade section, and a radial position with ...
openaire +1 more source
Noise and Efficiency of Axial-Flow Fans
SAE Technical Paper Series, 1970<div class="htmlview paragraph">A test apparatus was constructed and instrumented for testing tractor engine cooling fans in an environment simulating actual operating conditions. Tests were conducted to investigate the influence of the blade pitch angle, blade camber and fan rotational speed on the air delivery performance, the input power ...
J. W. Hummel, J. A. Weber
openaire +1 more source
Reynolds Number Scaling of Axial Flow Fans [PDF]
, 2022 There exists uncertainty about the accuracy with which the fan scaling laws can predict the performance characteristics of a full scale prototype fan from model testing. This uncertainty stems from the large difference in the value for Reynolds number that typically exists between the prototype and model fan.
Steenkamp, Gerhardus Marthinus +2 more
openaire +1 more source
Journal of turbomachinery, 2020
This paper describes a multidisciplinary design optimization for performance improvement of an electric-ducted fan rotor using free-form deformation (FFD) and data mining techniques.
R. Adjei +3 more
semanticscholar +1 more source
This paper describes a multidisciplinary design optimization for performance improvement of an electric-ducted fan rotor using free-form deformation (FFD) and data mining techniques.
R. Adjei +3 more
semanticscholar +1 more source
Leakage flow flutter in a low-speed axial-flow fan with shrouded blades
Journal of Sound and Vibration, 2020A large-amplitude axial vibration of a rotor fan with shrouded blades has been experimentally observed. The analysis of the Campbell diagram shows that the vibration is related to a backward-whirl vibrational mode of the rotor which is always present ...
L. Carassale +3 more
semanticscholar +1 more source
Performance Degradation and Flow Instability of Axial-Flow Fan Due to Upstream Obstacle
, 2020This paper elucidates the performance degradation and flow instability of an axial fan caused by the presence of disk-shaped obstacles upstream of the fan, such as wall surfaces. The increase in pressure loss and the decrease in shaft power coefficient
D. Kang +6 more
semanticscholar +1 more source
The Design and Performance of an Axial-Flow Fan
Journal of Fluids Engineering, 1934Abstract This paper deals with the design and performance of an axial-flow fan for comparatively high pressures. The design is based largely on extensive investigations of the air flow through a fan of well-known design which yielded certain constants.
Lionel S. Marks, John R. Weske
openaire +1 more source