Results 31 to 40 of about 2,859,954 (336)

Reduction of the COSMOS Southern Sky galaxy survey data to the RC3 standard system [PDF]

open access: yes, 1996
After having cross-identified a subsample of LEDA galaxies in the COSMOS database, we defined the best relations to convert COSMOS parameters (coordinates, position angle, diameter, axis ratio and apparent magnitude) into RC3 system used in the LEDA ...
Di Nella, H.   +3 more
core   +2 more sources

Improvement of Solid-Gas Interaction in Fluidized Bed Systems via Secondary Air- Injection

open access: yesMATEC Web of Conferences, 2017
Since the invention of fluidized bed systems to augment chemical reactions, numerous innovations were introduced to the system. These innovations result-in substantial improvement to the overall efficiency apart from resulting the fluidized bed system to
Mohideen Batcha Mohd Faizal   +2 more
doaj   +1 more source

Flow Characteristics and Mass Flow Distribution Mechanism Within Multi-Inlet and Multi-Outlet Corotating Disc Cavities

open access: yesEnergies
This study reveals the governing mechanism of mass flow distribution within a multi-inlet, multi-outlet corotating disc cavity, providing critical insights for designing advanced gas turbine secondary air systems.
Clarence Jia Cheng Chai   +2 more
doaj   +1 more source

Experimental and Numerical Investigation on Finned Vortex Reducer in a Rotating Cavity with a Radial Inflow

open access: yesAerospace, 2023
In aero-engines, a secondary air system is used to cool the rotor discs and seal cavities between rotor and stator parts. The pressure loss caused by bleed air can be effectively reduced by setting the finned vortex reducer. Thus, the bleed system design
Jian He   +4 more
doaj   +1 more source

Modeling and Detecting False Data Injection Attacks against Railway Traction Power Systems [PDF]

open access: yes, 2017
Modern urban railways extensively use computerized sensing and control technologies to achieve safe, reliable, and well-timed operations. However, the use of these technologies may provide a convenient leverage to cyber-attackers who have bypassed the ...
Lakshminarayana, Subhash   +3 more
core   +2 more sources

Experimental investigation of solid holdup in twin-cyclone combustor [PDF]

open access: yesResearch & Knowledge, 2016
In this study, the hydrodynamics behaviors and solid holdup in a twin-cyclone combustor with a swirling fl uidized bed were investigated under a wide range of cold–air operating conditions. Silica sand of three different particle size ranges: 600–710 μm,
Kasama Sirisomboon, Nuttachai Kummun
doaj   +1 more source

A Modeling Method on Aircraft Engine Based on the Component Method of Secondary Air System

open access: yes, 2014
The dynamic characteristic of transient secondary air system has the significance to ensure the airworthiness safety. This paper provides the component method to solve the secondary air system through the analysis between the component method and network
Weiwei Che, S. Ding, Chuankai Liu
semanticscholar   +1 more source

Using morphological analysis to tackle uncertainty at the design phase for a safety critical application

open access: yesPropulsion and Power Research, 2015
The gas turbine engine internal air system provides cooling and sealing air to a series of critical subsystems and components such as high pressure gas turbine blades, as well as controlling the thrust load on the turbine and compressor spool assembly ...
P.R.N. Childs, B. Garvey
doaj   +1 more source

Influence of Inlet Temperature Differentials on Aerothermal Characteristics and Mass Flow Distribution in Multi-Inlet and Multi-Outlet Corotating-Disc Cavities

open access: yesEnergies
To facilitate the development of next-generation gas turbine cooling systems, the present study systematically investigates the influence of inlet temperature differentials on the aerothermal characteristics and mass flow distribution within multi-inlet,
Clarence Jia Cheng Chai   +2 more
doaj   +1 more source

Research and Development of Carbon Dioxide Refrigeration Technology [PDF]

open access: yesE3S Web of Conferences, 2020
With the agreement of the Kigali amendment to the Montreal Protocol, the timetable for the reduction of the mandate and the limitation of 18 controlled substances are being phased in. This has brought great challenges to the transformation, upgrading and
Wang Qi, Li Guangpeng
doaj   +1 more source

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