Results 11 to 20 of about 221,693 (258)

Correlations and Kappa Distributions: Numerical Experiment and Physical Understanding [PDF]

open access: yesEntropy
Kappa distributions, their statistical framework, and their thermodynamic origin describe systems with correlations among their particle energies, residing in stationary states out of classical thermal equilibrium/space plasmas, from solar wind to the ...
David J. McComas   +2 more
doaj   +2 more sources

Calculation of pipeline branches with considering nonlinearity of elastic base [PDF]

open access: yesE3S Web of Conferences, 2023
When calculating systems on an elastic foundation, the generalized Reissner-Vlasov-Filomenko-Borodich model is traditionally used. Such models are acceptable for small displacements. For large displacements, there are some deviations from reality.
Ostonov T. K.   +5 more
doaj   +1 more source

Nuclear Reactivity Calculation with Reduction of Fluctuations

open access: yesInternational Journal of Technology, 2023
This article presents a study based on a series of numerical experiments. It demonstrates the possibility of reducing fluctuations in the calculation of reactivity using the second Bernoulli number based on the approximation of the Euler-Maclaurin ...
Daniel Suescun-Diaz   +2 more
doaj   +1 more source

Optimization of Geometrical Parameters of Fire Wood Fluidized Bed Burner [PDF]

open access: yesProblems of the Regional Energetics, 2021
The aim of this work is to determine the dynamics of the firewood burning-out in the fluidized bed burners and to select the optimal constructive characteristics of the burner of the fluidized bed, which allows decreasing the unburnt fuel particles to be
Pivnenko Y.   +4 more
doaj   +1 more source

Design of Computational Models for Hydroturbine Units Based on a Nonparametric Regression Approach with Adaptation by Evolutionary Algorithms

open access: yesComputation, 2021
This article deals with the problem of designing regression models for evaluating the parameters of the operation of complex technological equipment—hydroturbine units.
Vladimir Viktorovich Bukhtoyarov   +1 more
doaj   +1 more source

Numerical Experiments on Spiral Structure [PDF]

open access: yesThe Astrophysical Journal, 1970
Results of an n-body calculation, containing about 120000 particles, were shown as a motion picture. Some of the particles are treated as ‘gas’, obeying a special dissipative dynamics, the rest as ‘stars’. The system was started as pure ‘gas’, and ‘stars’ were made out of the ‘gas’ in a manner closely mimicking real galaxies.
R. H. Miller   +2 more
openaire   +1 more source

The Ability of a Soil Temperature Gradient-Based Methodology to Detect Leaks from Pipelines in Buried District Heating Channels

open access: yesEnergies, 2021
We carried out several numerical experiments to analyze how different boundary conditions affect the ability to detect small pipeline leaks. Our method is based on determining the soil temperature gradient above a buried district heating channel.
Matjaž Perpar, Zlatko Rek
doaj   +1 more source

Special features of assessing the strength of nuclear reactor equipment under dynamic loads

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2023
The paper presents tasks and approaches to their solutions in assessing vibration strength and dynamic safety of marine reactor equipment (for example: pumps, control driven rod mechanisms).
K. A. Lonin   +4 more
doaj   +1 more source

An Armijo-Type Hard Thresholding Algorithm for Joint Sparse Recovery

open access: yesIEEE Access, 2021
Joint sparse recovery (JSR) in compressed sensing simultaneously recovers sparse signals with a common sparsity structure from their multiple measurement vectors obtained through a common sensing matrix.
Lili Pan, Xunzhi Zhu
doaj   +1 more source

Numerical analysis of stationary solutions of systems with delayed argument in mathematical immunology

open access: yesСовременная математика: Фундаментальные направления, 2022
This work is devoted to the technology developed by the authors that allows one for fixed values of parameters and tracing by parameters to calculate stationary solutions of systems with delay and analyze their stability.
M. Yu. Khristichenko   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy