Results 21 to 30 of about 5,629,785 (335)
Experimental study on vibration and noise characteristics of small fan motors
Nihon Kikai Gakkai ronbunshu, 2014 In this paper, the phenomenon of vibration and noise in a small fan motor caused by electromagnetic forces were experimentally investigated. First, vibration characteristics of the fan motor in a non-operating state were determined by experimental modal ...
Masaki OGUSHI +6 more
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Energy Science & Engineering, 2023 Indoor air conditioning systems play a crucial role in regulating the environmental conditions of enclosed spaces. The noise generated by such systems can significantly impact human comfort.
Jian Lei +4 more
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Noise Prediction of Centrifugal Fan Based on Improved Nenral Network [PDF]
E3S Web of Conferences, 2021 In order to solve the problems that the prediction accuracy of the traditional centrifugal fan is low and the cost is high, a noise prediction model for centrifugal fan based on improved particle swarm optimization (IPSO) optimized BP neural network was ...
Long Bo +3 more
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Tonal noise of voluteless centrifugal fan generated by turbulence stemming from upstream inlet gap [PDF]
The Physics of Fluids, 2021 In this study, noise generation is investigated for a generic voluteless centrifugal HVAC fan at an off-design operation point where tonal noise increases.
M. Ottersten, H. Yao, Lars Davidson
semanticscholar +1 more source
Energies, 2023 Fans as industrial devices are among the most significant single recipients of driving energy. Therefore, they represent an important area of energy savings to reduce CO2 emissions. The ubiquity of fans and their operation under conditions different from
M. Piwowarski, Damian Jakowski
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ANALYTICAL MODEL OF ENGINE FAN NOISE
Akustika, 2019 An analytical model of a far acoustic gas-turbine engine (GTE) fan field affording an acceptable accuracy for practical calculations in a broad band of bypass ratio variation has been proposed.
V. Samokhin, Petr Moshkov, A. Yakovlev
semanticscholar +1 more source
Aerodynamic and aeroacoustic properties of axial fan blades with slitted leading edges
Acta Acustica, 2022 A detailed experimental analysis of the aerodynamic and aeroacoustic properties of flat-plate axial fans with slitted leading edges is performed. The sound emissions of five slitted leading edge designs are measured at a constant rotational speed and at ...
Ocker Christof +4 more
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Fan Noise Boundary-Layer Ingestion Installation Effects for NOVA Aircraft Configuration
Advanced Courses, 2019 Aim of this paper is to investigate the effects of the turbulent flow developing over a fuselage on fan noise for Boundary Layer Ingestion (BLI) embedded propulsion systems.
G. Romani +4 more
semanticscholar +1 more source
Numerical flow noise simulation of an axial fan with a Lattice-Boltzmann solver
Acta Acustica, 2023 In this paper, a transient and compressible solver based on the Lattice-Boltzmann Method/Very Large Eddy Simulation (LBM/VLES) approach is employed to predict unsteady flow physics and flow-induced noise generation of a low-pressure axial fan ...
Evangelos Antoniou +4 more
semanticscholar +1 more source
Utjecaj radijalnog i aksijalnog razrmaka na emitiranu buku i performance ventilatora
Promet (Zagreb), 2012 Among all auxilimy units of the air cooled diesel engine acooling fan is the noisiest. One of the noise generation mechanismsis the blade interaction with the vortices occurring in theradial and axial clearances of the fan due to the pressure ...
Mirko Čudina
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