Results 71 to 80 of about 125,489 (316)

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm   +3 more
wiley   +1 more source

An experimental and numerical investigation of the effect of aero gas turbine test facility aspect ratio on thrust measurement. [PDF]

open access: yes, 2011
This work describes the outcome of research program investigating thrust measurements in enclosed test facility for modern aero gas turbine engines. Literature work, experimental work and a description of Computational fluid dynamics simulation system
Al-Alshaikh, Abdullatif
core  

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

open access: yesAdvanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič   +7 more
wiley   +1 more source

Analyzing Engine Performance and Combustor Performance to Assess Sustainable Aviation Fuel Blends

open access: yesAerospace
FT blends derived from biomass have been confirmed to benefit reductions in GHG and particulate matter (PM). An improvement in combustibility is predicted to reduce fuel consumption and lead to further emission reduction. Various FT fuel blends (7%, 10%,
Ziyu Liu, Xiaoyi Yang
doaj   +1 more source

Tongue thrust in adults

open access: yesInternational Journal of Orofacial Myology, 1978
Tongue thrust, or reverse swallow, is evidenced by the incorrect placement of the tongue between the upper and lower teeth in swallowing or at rest. 1 Most dentists and speech pathologists associate the term "tongue thrust" with concomitant speech problems and malocclusions that may require orthodontic appliances.
openaire   +3 more sources

Evaluation of Plasticity and Creep Parameters From Tensile Stress–Strain Data for a Range of Strain Rates

open access: yesAdvanced Engineering Materials, EarlyView.
This plot compares experimental tensile stress–strain curves (with 4 different strain rates) and corresponding modelled curves (obtained using the optimised sets of Voce and Miller–Norton parameter values shown). The inferred M‐N values, characterizing the creep, are very similar to those obtained via conventional creep testing.
S. Ooi, R. P. Thompson, T. W. Clyne
wiley   +1 more source

An Experimental Study of Lubrication in Thrust Slide-Bearings of Scroll Compressors - Effect of Thickness and Inside Form of Thrust Plate -

open access: yes, 2012
The present study focuses on the effect of the thickness and inner form of the thrust plate in a scroll compressor upon the lubrication features. A simplified model of a annular thrust slide-bearing with thinner thrust plate submerged in a refrigerant ...
Anami, Keiko   +4 more
core  

Static highly elliptical orbits using hybrid low-thrust propulsion

open access: yes, 2012
The use of extended static-highly elliptical orbits, termed Taranis orbits, is considered for continuous observation of high latitude regions. Low-thrust propulsion is used to alter the critical inclination of Molniya-like orbits to any inclination ...
Macdonald, Malcolm, Anderson, Pamela
core   +1 more source

Analytical, circle-to-circle low-thrust transfer trajectories with plane change [PDF]

open access: yes, 2013
Orbit averaging techniques are used to develop analytical approximations of circle-to-circle low-thrust trajectory transfers with plane-change about the Sun.
Macdonald, Malcolm, Malcolm Macdonald
core   +1 more source

Adapted or atypical thrusting

open access: yesInternational Journal of Orofacial Myology, 1999
Distinguishing between the terms "adapted thrusting" and "atypical thrusting" is not the critical factor in planning treatment for patients demonstrating tongue thrust behavior. Evaluation of fadors including age of the patient, breathing pattern, cranio-facial characteristics, head and body posture are important in determining when, and how to provide
openaire   +3 more sources

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