Results 61 to 70 of about 328,216 (310)

Review of Film Cooling Techniques for Aerospace Vehicles

open access: yesEnergies
Film cooling, a vital method for controlling surface temperatures in components subjected to intense heat, strives to enhance efficiency through innovative technological advancements.
Edidiong Michael Umana, Xiufeng Yang
doaj   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz   +4 more
wiley   +1 more source

Numerical study on film cooling mechanism and characteristics of cylindrical holes with branched jet injections

open access: yesPropulsion and Power Research, 2013
The film cooling mechanism and characteristics of a row of cylindrical holes with branched jet injections were investigated by numerical simulation. Three geometries for the branched jet injection holes and four blowing ratios were considered.
Yu Yao, Jingzhou Zhang, Yang Yang
doaj   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

open access: yesAdvanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein   +2 more
wiley   +1 more source

Turbine airfoil film cooling [PDF]

open access: yes
Emphasis is placed on developing more accurate analytical models for predicting turbine airfoil external heat transfer rates. Performance goals of new engines require highly refined, accurate design tools to meet durability requirements.
Hylton, Larry D.
core   +4 more sources

Aerodynamic Losses in Turbines with and without Film Cooling, as Influenced by Mainstream Turbulence, Surface Roughness, Airfoil Shape, and Mach Number

open access: yesInternational Journal of Rotating Machinery, 2012
The influences of a variety of different physical phenomena are described as they affect the aerodynamic performance of turbine airfoils in compressible, high-speed flows with either subsonic or transonic Mach number distributions.
Phil Ligrani
doaj   +1 more source

Enhancement of Cooling Effectiveness with Mist Assisted Film Cooling

open access: yesWorld Congress on Momentum, Heat and Mass Transfer, 2019
info:eu-repo/semantics ...
Biswal, Pratibha   +2 more
openaire   +2 more sources

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger   +2 more
wiley   +1 more source

Study of Methods to Reduce Water Loss Rate for Vegetables in Vacuum Cooling

open access: yesZhileng xuebao, 2013
Water loss is inevitable during vacuum cooling because the temperature is decreased through the loss of water in vegetables. The cooling effect of leafy vegetables in vacuum cooling is evident, but that of root vegetables is not obvious because their ...
Wang Xueqin, Liu Baolin
doaj  

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

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