Results 31 to 40 of about 5,193,989 (342)

A new model of fluid flow to determine pressure balance characteristics [PDF]

open access: yes, 2013
Some projects such as the EUROMET project 463 have underlined the lack of agreement between experimental measurements and calculations by the finite element method (FEM), used to determine the piston fall rate of a high-pressure balance used in primary ...
WONGTHEP, Padipat   +3 more
core   +1 more source

JET ENGINE INLET DISTORTION SCREEN AND DESCRIPTOR EVALUATION

open access: yesActa Polytechnica, 2017
Total pressure distortion is one of the three basic flow distortions (total pressure, total temperature and swirl distortion) that might appear at the inlet of a gas turbine engine (GTE) during operation.
Jiří Pečinka   +3 more
doaj   +1 more source

Aerodynamic Shape Optimization of an Aircraft Propulsor Air Intake with Boundary Layer Ingestion

open access: yesApplied Mechanics, 2022
The growth of the airline industry has highlighted the need for more environmentally conscious aviation, leading to the conceptualization of more fuel-efficient aircraft.
Ayesh Sudasinghe   +4 more
doaj   +1 more source

Detecting Intralabyrinthine Pressure Increase by Postural Manipulation with Wideband Tympanometry and Distortion Product Otoacoustic Emissions [PDF]

open access: yes, 2020
Objective: Intracranial pressure increase is known to affect inner ear pressure through the cochlear and vestibular aqueducts. This finding forms a good model for inner ear pressure studies.
Funda Tümkaya   +4 more
core   +1 more source

A Study on the Stall Detection of an Axial Compressor through Pressure Analysis

open access: yesApplied Sciences, 2017
In order to research the inherent working laws of compressors nearing stall state, a series of compressor experiments are conducted. With the help of fast Fourier transform, the amplitude–frequency characteristics of pressures at the compressor inlet ...
Haoying Chen   +3 more
doaj   +1 more source

Numerical Simulation on the Influence of Inlet Flow Characteristics on the Performance of a Centrifugal Compressor

open access: yesEnergies, 2023
Although inlet bent pipes are usually adopted due to limited installation space, the influences of different bend pipes on the inlet flow characteristics and performance of centrifugal compressors are still unclear.
Xing Li   +6 more
doaj   +1 more source

A Modified Circumferentially Averaged Method for Compressor Performance under Inlet Distortion

open access: yesAerospace, 2023
Inlet distortion detrimentally affects the aerodynamic performance and lessens the stability of compressors, and has received considerable attention. The need to accurately estimate its effect on the performance and stability of compressor as early as ...
Yang Zhao, Donghai Jin, Xingmin Gui
doaj   +1 more source

The compressibility and high pressure structure of diopside from first principles simulation [PDF]

open access: yes, 2008
The structure of diopside (CaMgSi2O6) has been calculated at pressures between 0 and 25 GPa using the planewaves and pseudopotentials approach to density functional theory.
Dove, M. T.   +7 more
core   +1 more source

Is infrasound perceived by the auditory system through distortions?

open access: yesActa Acustica, 2021
Several studies showed that the human auditory system is sensitive to infrasound. The present study investigated if non-linear processes within the ear generate distortion products, which may explain the auditory sensitivity to infrasound.
Joost Holger   +3 more
doaj   +1 more source

Energy Effects of Ground Vortex-Induced Flow Distortion and Foreign Object Ingestion in Aeroengine Intakes

open access: yesEnergies
Ground vortex formation beneath aeroengine intakes during near-ground operations represents an energy-related aerodynamic issue, as it degrades inlet flow quality, induces pressure distortion, and reduces the effective utilization of incoming kinetic ...
Longqing Lei   +4 more
doaj   +1 more source

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