Results 61 to 70 of about 2,080,676 (172)

Numerical Solution of a parabolic system with blowup of the solution

open access: yes, 2009
In this paper, the author proposes a numerical method to solve a parabolic system of two quasilinear equations of nonlinear heat conduction with sources. The solution of this system may blow up in finite time.
Roux, Marie-Noëlle Le
core   +2 more sources

Gauge Invariant Overlaps for Classical Solutions in Open String Field Theory

open access: yes, 2008
We calculate gauge invariant observables for Schnabl's solution with analytic method and with the level truncation approximation. We also compute them for the numerical solution initially obtained by Sen and Zwiebach in the level truncation approximation
Ellwood   +34 more
core   +1 more source

Thermal properties determination of a cylindrical product during its cooling: two-dimensional numerical model and uncertainty

open access: yesInternational Journal of Food Properties, 2019
In this article, a two-dimensional model is proposed to determine thermal diffusivity and convective heat transfer coefficient, providing the average values, their uncertainties and the covariance matrix referring to these parameters for a product with ...
Wilton Pereira da Silva   +5 more
doaj   +1 more source

Modeling seismic wave propagation in partially saturated porous media: a comparative study

open access: yesFrontiers in Earth Science
Seismic wave propagation in partially saturated porous media involves multiscale wave-induced fluid flow (WIFF) mechanisms, which significantly impact distinct wave dispersion and attenuation across different frequency bands.
Weishi Chen   +4 more
doaj   +1 more source

Recovering Two Lost Treatises on Approximating the Sine of 1 ° from Qushjī’s Commentary on Zīj-i Ṣulṭānī [PDF]

open access: yesNazariyat: Journal for the History of Islamic Philosophy and Sciences
The accuracy of medieval approximations of the Sine of 1° reached its peak with the works of the Persian mathematician and astronomer Ghiyāth al-Dīn Jamshīd al-Kāshī (d. 832/1429), and his patron Ulugh Beg (d.
Fateme Savadi
doaj   +1 more source

MODELING OF PROCESSES IN APPLICATION PROGRAM

open access: yesСовременная наука и инновации, 2022
Since people learned to create models and conduct calculations on Basiq, Fortran, there have been many attempts to recreate physical processes close to real ones, mathematical programs have replaced these programs - Maple, MATLAB, Mathematica, and also ...
G. A. Mankaeva   +5 more
doaj  

Matrix-equation-based strategies for convection-diffusion equations

open access: yes, 2015
We are interested in the numerical solution of nonsymmetric linear systems arising from the discretization of convection-diffusion partial differential equations with separable coefficients and dominant convection.
Palitta, Davide, Simoncini, Valeria
core   +1 more source

Optimal Order Convergence Implies Numerical Smoothness

open access: yes, 2013
It is natural to expect the following loosely stated approximation principle to hold: a numerical approximation solution should be in some sense as smooth as its target exact solution in order to have optimal convergence.
Chou, So-Hsiang
core  

Numerical solution of Riemann-Hilbert problems: Painleve II [PDF]

open access: yes, 2009
We describe a new spectral method for solving matrix-valued Riemann-Hilbert problems numerically. We demonstrate the effectiveness of this approach by computing solutions to the homogeneous Painleve II equation.
Olver, Sheehan
core  

MHD three dimensional flow of Oldroyd-B nanofluid over a bidirectional stretching sheet: DTM-Padé Solution

open access: yesNonlinear Engineering, 2019
Current article is devoted with the study of MHD 3D flow of Oldroyd B type nanofluid induced by bi-directional stretching sheet. Expertise similarity transformation is confined to reduce the governing partial differential equations into ordinary ...
Gupta Sumit, Gupta Sandeep
doaj   +1 more source

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