Results 31 to 40 of about 807 (188)
Impeller Design of a Centrifugal Fan with Blade Optimization
International Journal of Rotating Machinery, 2011 A method is presented for redesigning a centrifugal impeller and its inlet duct. The double-discharge volute casing is a structural constraint and is maintained for its shape. The redesign effort was geared towards meeting the design volute exit pressure
Yu-Tai Lee +6 more
doaj +1 more source
A Casing Treatment with Axial Grooves for Centrifugal Compressors
International Journal of Turbomachinery, Propulsion and Power, 2019 This paper provides an investigation of a casing treatment (CT) approach for pressure ratio improvements of centrifugal compressors between peak efficiency and surge.
Sebastian Leichtfuß +4 more
doaj +1 more source
Velocity measurements in the vicinity of the exit and inlet of a spiral bevel gear shroud [PDF]
, 2015 In many aeroengines the accessory power offtake is achieved using a spiral bevel gear set running off one of the main shafts. The crown and bevel gears are housed in an internal gearbox. Over the past few years the Nottingham University Technology Centre
Graham Johnson +3 more
core +1 more source
Stall and leading-edge vortex in a centrifugal compressor with vaned diffuser
Nihon Kikai Gakkai ronbunshu, 2015 The experimental and CFD analysis were conducted to investigate the relationship between stall and leading-edge vortex (LEV) in a centrifugal compressor with vaned diffuser.
Nobumichi FUJISAWA +2 more
doaj +1 more source
Numerical simulation of turbulent flow between shrouded contra-rotating disks [PDF]
Advances in Mechanical Engineering, 2016 The turbulent flow between shrouded contra-rotating disks was numerically studied with a two-layer turbulence model and a modified Launder–Sharma low-Reynolds number k- ε model. The dissipation rate decrease caused by solid body rotation was considered in the second model.
Shu-Xian Chen +3 more
openaire +2 more sources
Aspects of plane waves and Taub-NUT as exact string theory solutions [PDF]
, 2004 This thesis is a study of some aspects of string theory solutions that are exact in the inverse string tension ɑ', and thus are valid beyond the low-energy limit.
Svendsen, Harald Georg
core
Journal of Marine Science and Engineering, 2023 To investigate the transient characteristics of high-speed axial flow water-jet pumps during start-up and emergency acceleration as well as to analyze how different accelerations affect the performance of internal flow, the k–ω turbulence model of the ...
Rongsheng Zhu +6 more
doaj +1 more source
Analysis of Windage Losses and Velocity Distribution for a Shrouded Rotating Disk [PDF]
Volume 1: Turbomachinery, 1987 An analysis of experimental results was carried out, establishing a direct correlation between measured velocity profiles and windage losses for a rotating disk inside a shrouded stator as typically found in turbomachinery. The analysis gives information on the regions of the rotating and static parts, which have a dominant effect upon ...
openaire +1 more source
Some Observations on the Computational Sensitivity of Rotating Cavity Flows
, 2021 Across the open literature, there is no clear consensus on what the most suitable modeling fidelity is for rotating cavity flows. Although it is a widely held opinion that unsteady Reynolds-averaged-Navier–Stokes (URANS) approaches are unsuitable, many ...
Tom Hickling +3 more
core +1 more source
AerospaceImproving airflow pressure is of great significance for the cooling and sealing of aeroengines. In a co-rotating cavity with radial inflow, vortex reducers are used to decrease the pressure drop. However, the performance of traditional vortex reducers is
Wenjie Shen +4 more
doaj +1 more source