Results 71 to 80 of about 8,352,814 (137)
FluidsIn aerospace, flow control techniques have improved the separation flow characteristics around airfoils by various means. In this paper, the delayed detached eddy simulation (DDES) technique is used to simulate the detailed flow field around the NACA0021
Zelin Liu, Kaidi Li, Xiaojing Sun
doaj +1 more source
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2018 When developing counter-rotating fans for advanced aircraft engines with ducted blades (CRTF), it is very important to ensure high acoustic and aerodynamic characteristics. To provide investigations of aerodynamic and acoustic performance of the original
V. I. Mileshin +3 more
doaj +1 more source
Hospital performance: costs of acute admitted patients in public hospitals in 2011–12 [PDF]
, 2015 Some public hospitals spend nearly twice as much money as others to provide similar services to similar groups of patients. Overview Hospitals account for a large share of the funds Australia spends on the health sector each year. In 2011–12, about 30%
National Health Performance Authority
core
Engineering Applications of Computational Fluid MechanicsThis study investigates the effects of surface roughness on the aerodynamic and acoustic performance of propellers, employing CFD techniques with RANS equations.
Seongho Park +2 more
doaj +1 more source
Experimentally determined aeroacoustic performance and control of several sonic inlets [PDF]
, 1975 Low speed wind tunnel tests were conducted to determine the aeroacoustic performance of several model sonic inlets. The results were analyzed to indicate how inlet aeroacoustic characteristics were affected by inlet design and operating conditions.
Miller, B. A.
core
On the Effect of Tip Flow on the Noise of a Ducted Rotor
International Journal of Turbomachinery, Propulsion and PowerThis study focuses on the aeroacoustic aspects of ducted rotors that could possibly be used in future electrically driven helicopter tail rotor systems. It provides a comprehensive understanding of the tip flow evolution, and of the interaction with the ...
Jose Rendón-Arredondo, Stéphane Moreau
doaj +1 more source
Medição e simulação acustica de silenciadores veiculares [PDF]
, 1995 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro TecnoogicoPara a atenuação do ruído emitido pelo motor, os veículos são equipados com silenciadores.
Kimura, Marcio Rogerio Maebara
core
Performance characterization of a slotted wind turbine airfoil featuring passive blowing
Energy ReportsRenewable energy is crucial for a sustainable future, and wind energy holds significant potential as a viable solution to meet global demands. The current study employs high-fidelity Computational Fluid Dynamics (CFD) simulations to investigate the ...
Md. Zishan Akhter +3 more
doaj +1 more source
Engineering Applications of Computational Fluid MechanicsDirect evaporative cooling (DEC) air conditioning has gained widespread adoption as a green and low-carbon cooling technology. However, large-airflow DEC units often suffer from elevated noise levels and reduced aerodynamic efficiency due to limitations ...
Yaming Fan +5 more
doaj +1 more source
FluidsThe rapid growth of drone use in urban areas has prompted authorities to review airspace regulations, forcing drone manufacturers to anticipate and reduce the noise emissions during the design stage.
Pietro Li Volsi +5 more
doaj +1 more source