Results 1 to 10 of about 181,254 (309)

Optical Methods for the Determination of Combustion Temperatures [PDF]

open access: yes, 1953
A brief survey is presented of optical methods for the determination of temperatures which can be used in rocket engines. The data are presented in outlines and include an outline of basic principles involved in application of a given technique, a sketch
Dyne, P. J., Penner, S. S.
core   +1 more source

Experimental Analysis of the Three Dimensional Flow in a Wells Turbine Rotor

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2023
An experimental investigation of the local flow field in a Wells turbine has been conducted, in order to produce a detailed analysis of the aerodynamic characteristics of the rotor and support the search for optimized solutions.
Fabio Licheri   +3 more
doaj   +1 more source

In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process

open access: yesMetals, 2019
As part of a feasibility study, an alternative production process for titanium aluminides was investigated. This process is based on in situ alloying by means of a multi-wire technique in the layer-wise additive manufacturing process.
Philipp Henckell   +4 more
doaj   +1 more source

A Comprehensive Physical Profile for Aqueous Dispersions of Carbon Derivatives as Solar Working Fluids

open access: yesApplied Sciences, 2020
The application of nanofluids in direct solar absorption, heat transfer or direct solar steam generation entails carrying out a comprehensive study taking into account several physical quantities.
Elisa Sani   +6 more
doaj   +1 more source

Mechanical properties of wire arc additive manufactured carbon steel cylindrical component made by gas metal arc welding process

open access: yesJournal of the Mechanical Behavior of Materials, 2021
Wire arc additive manufacturing (WAAM), a welding-based additive manufacturing (AM) method, is a hot topic of research since it allows for the cost-effective fabrication of large-scale metal components at relatively high deposition rates.
Nagasai Bellamkonda Prasanna   +2 more
doaj   +1 more source

Flow characterization of microscale effusion and transpiration air cooling on single blade

open access: yesCase Studies in Thermal Engineering, 2022
Micro cooling has drawn attention as the next-generation cooling technique that is better than film cooling for a high-temperature turbine blade. Not to reduce the gas turbine efficiency while having high blade cooling effectiveness, it recommends that ...
Mingeon Kim   +3 more
doaj   +1 more source

The aging of tungsten filaments and its effect on wire surface kinetics in hot-wire chemical vapor deposition [PDF]

open access: yes, 2002
Wire-desorbed radicals present during hot-wire chemical vapor deposition growth have been measured by quadrupole mass spectrometry. New wires produce Si as the predominant radical for temperatures above 1500 K, with a minor contribution from SiH3 ...
Atwater, Harry A.   +3 more
core   +1 more source

CALCULATION-EXPERIMENTAL DETERMINATION OF THE AVERAGE NUMBER OF QUANTIZED LONGITUDINAL ELECTRON DE BROGLIE HALF WAVES IN A CYLINDRICAL CONDUCTOR WITH PULSED AXIAL CURRENT

open access: yesElectrical engineering & Electromechanics, 2020
Purpose. Implementation of calculation-experimental determination of average number n0m of the quantized longitudinal electron de Broglie half waves of length λezm/2 in the metal cylindrical conductor with the pulsed axial current of high density ...
M. I. Baranov, S. V. Rudakov
doaj   +1 more source

Thermophysical Properties of Nanofluids Composed of Ethylene Glycol and Long Multi-Walled Carbon Nanotubes

open access: yesFluids, 2020
In this work, thermal conductivity, viscosity, isobaric heat capacity, and density of stable carbon-based nanofluids are presented. The nanofluids under study are composed of 1,2-ethanediol (ethylene glycol, EG) and long multi-walled carbon nanotubes ...
Karolina Brzóska   +4 more
doaj   +1 more source

A shape memory alloy adaptive tuned vibration absorber: design and implementation

open access: yes, 2005
In this paper a tuned vibration absorber (TVA) is realized using shape memory alloy (SMA) elements. The elastic modulus of SMA changes with temperature and this effect is exploited to develop a continuously tunable device.A TVA with beam elements is ...
Brennan, M.J., Mace, B.R., Rustighi, E.
core   +1 more source

Home - About - Disclaimer - Privacy