Results 11 to 20 of about 270,343 (348)
Energy Procedia, 2012 AbstractHigh temperatures occurring during stagnation conditions can be very detrimental to the reliability, durability and safety of solar thermal systems. Various approaches to mitigate the effects to stagnation have been employed in the past, however as collector and system efficiencies improve, and larger solar systems are installed, the need for ...
Stephen J. Harrison +1 more
openaire +3 more sources
An Improved Real--Space Genetic Algorithm for Crystal Structure and Polymorph Prediction [PDF]
Physical Review B 77, 134117 2008, 2008 Existing Genetic Algorithms for crystal structure and polymorph prediction can suffer from stagnation during evolution, with a consequent loss of efficiency and accuracy. An improved Genetic Algorithm (GA) is introduced herein which penalizes similar structures and so enhances structural diversity in the population at each generation.
M. I. J. Probert +2 more
arxiv +5 more sources
Deposition of graphenic nanomaterials from elevated temperature premixed stagnation flames
Applications in Energy and Combustion Science, 2023 The work examines the unique nanostructure of carbon nanoparticles deposited from sooting premixed flames with flame temperatures exceeding 2200 K.
Shruthi Dasappa, Joaquin Camacho
doaj +2 more sources
Stagnation temperature effect on the conical shock with application for air
Chinese Journal of Aeronautics, 2018 Abstract The aim of this work is to realize a new numerical program based on the development of a mathematical model allowing determining the parameters of the supersonic flow through a conical shock under hypothesis at high temperature, in the context of correcting the perfect gas model.
Toufik Zebbiche, Toufik Elaichi
openaire +3 more sources
Impact of Flow Unsteadiness on Steady-State Gas-Path Stagnation Temperature Measurements [PDF]
, 2018 Steady-state stagnation temperature probes are used during gas turbine engine testing as a means of characterising turbomachinery component performance.
Clare Bonham +4 more
openalex +4 more sources
Species separation and modification of neutron diagnostics in inertial-confinement fusion [PDF]
, 2014 The different behaviours of deuterium (D) and tritium (T) in the hot spot of marginally-igniting cryogenic DT inertial-confinement fusion (ICF) targets are investigated with an ion Fokker-Planck model. With respect to an equivalent single-species model, a higher density and a higher temperature are found for T in the stagnation phase of the target ...
Canaud, Benoit +2 more
arxiv +3 more sources
Butane Heat Pipes for Stagnation Temperature Reduction of Solar Thermal Collectors
Energy Procedia, 2016 Heat pipes in solar thermal collectors enable to reduce the temperature loads in the solar circuit during stagnation periods by exploiting their dry out limit. Typically water, pentane or acetone are used as heat transfer media in collector heat pipes.
Bert Schiebler +4 more
openaire +3 more sources
Thermal Structure of Turbulent Stagnating Opposed Jets with Different Temperature.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1997 Fluctuating temperature has been measured using a laser Rayleigh scattering technique along a centerline of turbulent stagnating opposed jets (cold jet velocity : 2m/s) with different temperatures up to about 400°C. The temperature signals show that the temperature fluctuation is characterized by spike type fluctuations with a sharp increase or ...
Hidenori Yoshimura +3 more
openaire +4 more sources
Aerospace, 2023 In this paper, aimed at the problem of large temperature gradient thermal testing with the typical sharp wedge leading edge structure of a hypersonic vehicle, a subsonic high-temperature combustion gas heating (SHCH) test device is used to conduct a ...
Ri Wang +5 more
doaj +1 more source
Angewandte Chemie, Volume 134, Issue 51, December 19, 2022., 2022 Reactions between the highly strained uranacycle I with various boranes afford unprecedented uranium complexes bearing either a pendant borate or a pendant borane Lewis acid. The latter promotes the 1,2‐insertion of CO into a UIV‐N bond. Abstract In this contribution, we illustrate uranium complexes bearing a pendant borate (i.e.
Wei Su +4 more
wiley +2 more sources