Software for Numerical Calculations of Particle Trajectories in the Earth’s Magnetosphere and Its Use in Processing PAMELA Experimental Data

2021 ◽  
Vol 85 (4) ◽  
pp. 383-385
Author(s):  
V. S. Golubkov ◽  
A. G. Mayorov
Keyword(s):  
Experimental Data ◽  
Numerical Calculations ◽  
Particle Trajectories ◽  
Earth’S Magnetosphere ◽  
Earth's Magnetosphere

scholarly journals Current Systems in the Earth's Magnetosphere

2018 ◽  
Vol 56 (2) ◽  
pp. 309-332 ◽  
Author(s):  
N. Yu. Ganushkina ◽  
M. W. Liemohn ◽  
S. Dubyagin
Keyword(s):  
Earth’S Magnetosphere ◽  
Earth's Magnetosphere ◽  
Current Systems

scholarly journals Analytical Formula for the Ratio of Central to Minimum Film Thickness in a Circular EHL Contact

Lubricants ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 80 ◽  
Author(s):  
Petr Sperka ◽  
Ivan Krupka ◽  
Martin Hartl
Keyword(s):  
Experimental Data ◽  
Film Thickness ◽  
Analytical Formula ◽  
Numerical Calculations ◽  
Constant Ratio ◽  
Viscosity Coefficients ◽  
Wide Range ◽  
Minimum Film Thickness ◽  
Film Parameter ◽  
Ehl Contact

Prediction of minimum film thickness is often used in practice for calculation of film parameter to design machine operation in full film regime. It was reported several times that majority of prediction formulas cannot match experimental data in terms of minimum film thickness. These standard prediction formulas give almost constant ratio between central and minimum film thickness while numerical calculations show ratio which spans from 1 to more than 3 depending on M and L parameters. In this paper, an analytical formula of this ratio is presented for lubricants with various pressure–viscosity coefficients. The analytical formula is compared with optical interferometry measurements and differences are discussed. It allows better prediction, compared to standard formulas, of minimum film thickness for wide range of M and L parameters.

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