Results 1 to 10 of about 428,605 (169)

Design optimization of a vane type pre-swirl nozzle

open access: yesEngineering Applications of Computational Fluid Mechanics, 2021
Pre-swirl system is installed to minimize energy loss between the stationary and rotating parts of turbine secondary air system. Although various optimization studies were conducted to increase the pre-swirl efficiency, most of the studies were focused ...
Jungsoo Lee   +5 more
doaj   +1 more source

Thermal Comfort and Energy Analysis of a Hybrid Cooling System by Coupling Natural Ventilation with Radiant and Indirect Evaporative Cooling

open access: yesEnergies, 2021
A hybrid cooling system which combines natural ventilation with a radiant cooling system for a hot and humid climate was studied. Indirect evaporative cooling was used to produce chilled water at temperatures slightly higher than the dew point. With this
Pradeep Shakya   +5 more
doaj   +1 more source

Flow characteristics in turbine wheel space cavity

open access: yesEnergy Reports, 2021
Unsteady flow structures unrelated to rotating frequency in the turbine wheel space cavity has been observed and reported in a number of recent rim sealing investigations.
Lei Xie   +4 more
doaj   +1 more source

Ozone pollution around a coastal region of South China Sea: interaction between marine and continental air [PDF]

open access: yesAtmospheric Chemistry and Physics, 2018
Marine atmosphere is usually considered to be a clean environment, but this study indicates that the near-coast waters of the South China Sea (SCS) suffer from even worse air quality than coastal cities.
H. Wang   +13 more
doaj   +1 more source

Self-Powered Fine Dust Filtration Using Triboelectrification-Induced Electric Field

open access: yesNanoscale Research Letters, 2022
Particulate matter (PM) in the environment can adversely affect the health of living things. However, high removal efficiency and low-pressure loss are crucial design challenges for any air filtration system.
Young-Jun Kim   +4 more
doaj   +1 more source

Numerical Investigation on Windback Seals Used in Aero Engines

open access: yesAerospace, 2018
Seals are considered one of the most important flow elements in turbomachinery applications. The most traditional and widely known seal is the labyrinth seal but in recent years other types like the brush or carbon seals were introduced since they ...
Michael Flouros   +3 more
doaj   +1 more source

Influence of gas outburst dynamic flow on mine ventilation system

open access: yesAIP Advances, 2021
This study was conducted to analyze the influence of outburst power from coal and gas on mine ventilation systems in order to avoid damage from secondary disasters to mine ventilation systems.
Jingxiao Yu, Zongxiang Li, Wenqing Wang
doaj   +1 more source

Numerical Investigation of the Effect of Air Leaking into the Working Fluid on the Performance of a Steam Ejector

open access: yesApplied Sciences, 2021
This paper investigated the effect of air leaking into the working fluid on the performance of a steam ejector. A simulation of the mixing of air into the primary and secondary fluids was performed using CFD. The effects of air with a 0, 0.1, 0.3 and 0.5
He Li   +4 more
doaj   +1 more source

Numerical study on optimization of secondary air box in a 600 MW opposed wall-fired boiler

open access: yesAIP Advances, 2023
The opposed wall-fired boiler has been widely employed in power plants in China due to its adaptability. However, the airflow in the same layer burners from the large air box is uneven, affecting the combustion characteristics of pulverized coal and ...
Xinyu Ning   +6 more
doaj   +1 more source

Continued Experimental Study on the Friction Contact between a Labyrinth Seal Fin and a Honeycomb Stator: Slanted Position

open access: yesAerospace, 2018
Labyrinth seals are a state-of-the-art sealing technology to prevent and control leakage flows at rotor–stator interfaces in turbomachinery. Higher pressure ratios and the economical use of cooling air require small clearances, which lead to ...
Oliver Munz   +3 more
doaj   +1 more source

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