Results 31 to 40 of about 2,133 (160)

Accurate and efficient explicit approximations of the Colebrook flow friction equation based on the Wright omega-function [PDF]

open access: yes, 2018
The Colebrook equation is a popular model for estimating friction loss coefficients in water and gas pipes. The model is implicit in the unknown flow friction factor, f. To date, the captured flow friction factor, f, can be extracted from the logarithmic
Brkić, Dejan, Praks, Pavel
core   +8 more sources

Thermal distribution through a moving longitudinal trapezoidal fin with variable temperature-dependent thermal properties using DTM-Pade approximant

open access: yesCase Studies in Thermal Engineering, 2021
The present inspection elaborates the thermal distribution through a convective-radiative longitudinal trapezoidal moving fin with an internal heat source by considering the linear and nonlinear temperature-dependent thermal conductivities and heat ...
M.C. Jayaprakash   +6 more
doaj   +1 more source

Padé approximant related to inequalities for Gauss lemniscate functions

open access: yesJournal of Inequalities and Applications, 2016
Based on the Padé approximation method, we present new inequalities for Gauss lemniscate functions. We also solve a conjecture on inequalities for Gauss lemniscate functions proposed by Sun and Chen.
Juan Liu, Chao-Ping Chen
doaj   +1 more source

Reinterpretation of Classic Proton Charge Form Factor Measurements

open access: yesFrontiers in Physics, 2020
In 1963, a proton radius of 0.805(11) fm was extracted from electron scattering data and this classic value has been used in the standard dipole parameterization of the form factor. In trying to reproduce this classic result, we discovered that there was
Miha Mihovilovič   +6 more
doaj   +1 more source

High-resolution simulations and modeling of reshocked single-mode Richtmyer-Meshkov instability: Comparison to experimental data and to amplitude growth model predictions [PDF]

open access: yes, 2007
The reshocked single-mode Richtmyer-Meshkov instability is simulated in two spatial dimensions using the fifth- and ninth-order weighted essentially nonoscillatory shock-capturing method with uniform spatial resolution of 256 points per initial ...
Don, Wai Sun   +2 more
core   +1 more source

An analytical method with Padé technique for solving of variational problems

open access: yesNonlinear Engineering, 2017
In this paper, the homotopy analysis method (HAM) is employed to solve a class of variational problems (VPs). By using the so-called ħ-curves, we determine the convergence parameter ħ, which plays key role to control convergence of solution series.
Jaffarian H., Sayevand K., Kumar Sunil
doaj   +1 more source

Effective Summation and Interpolation of Series by Self-Similar Root Approximants

open access: yes, 2015
We describe a simple analytical method for effective summation of series, including divergent series. The method is based on self-similar approximation theory resulting in self-similar root approximants.
Gluzman, S., Yukalov, V. I.
core   +2 more sources

Thermodynamics of localized magnetic moments in a Dirac conductor [PDF]

open access: yes, 2011
We show that the magnetic susceptibility of a dilute ensemble of magnetic impurities in a conductor with a relativistic electronic spectrum is non-analytic in the inverse tempertature at $1/T\to 0$. We derive a general theory of this effect and construct
E. Burovski   +5 more
core   +2 more sources

Frequency-Weighted Residual Truncation and Padé Approximant for Model Reduction of Power System with Constant Time Delay

open access: yesIEEE Access, 2020
To improve the efficiency for managing power systems with constant time delay, an improved frequency-weighted model reduction is proposed. First, the Padé approximant allows to represent the time delay in the state-space form and build a linear ...
Yonghui Nie   +4 more
doaj   +1 more source

Role of ternary hybrid nanofluid in the thermal distribution of a dovetail fin with the internal generation of heat

open access: yesCase Studies in Thermal Engineering, 2022
The primary goal of this research is to examine the thermal variance in a dovetail fin under fully wet conditions with ternary hybrid nanofluid ZnFe2O4 +MnZnFe2O4 +NiZnFe2O4- H2O taking temperature and humidity ratio differences into account as driving ...
J Suresh Goud   +7 more
doaj   +1 more source

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