Results 31 to 40 of about 84 (79)

Simulation of Phase Change Material Absorbers for Passive Cooling of Solar Systems

open access: yesEnergies, 2022
One of the main challenges that face the reliable use of photovoltaic solar systems in hot arid regions is the prevailing high temperatures during the day.
Abdelhakim Hassabou, Rima J. Isaifan
doaj   +1 more source

Analysis of Two Dimensional Steady-State Heat Conduction Problems by MLPG Method [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2011
Numerical solutions obtained by the Meshless local Petrov–Galerkin (MLPG) method are presented for two-dimensional steady-state heat conduction problems.
GholamHosein Baradaran   +1 more
doaj  

Studying the Effect of Pulse Shape on Dynamic Stress Intensity Factor at the Finite Crack Tip using Displacement Fields [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2020
In analytical studies, step (Heaviside) function is used to simulate an impact load. However, in real behaviour of materials, loading and unloading take a short time.
Hossein Rahmani   +1 more
doaj  

NEW FUNCTIONAL RELATIONS FOR LINEAR RHEOLOGICAL MODELS OF MAXWELL AND KELVIN-VOIGT

open access: yesРоссийский технологический журнал, 2017
The article proposes new functional relationships for deformations and stresses within the framework of the linear rheological Maxwell and Kelvin-Vogt models.
V. D. Karlov
doaj   +1 more source

New operational relations for mathematical models of local nonequilibrium heat transfer

open access: yesРоссийский технологический журнал, 2022
Objectives. Recently, interest in studying local nonequilibrium processes has increased in the context of the development of laser technologies, the possibility of reaching ultrahigh temperatures and pressures, and the need for a mathematical description
E. M. Kartashov
doaj   +1 more source

Colombeau's theory and shock wave solutions for systems of PDEs

open access: yesElectronic Journal of Differential Equations, 2000
In this article we study the existence of shock wave solutions for systems of partial differential equations of hydrodynamics with viscosity in one space dimension in the context of Colombeau's theory of generalized functions.
F. Villarreal
doaj  

Numerical MLPG Analysis of Piezoelectric Sensor in Structures

open access: yesSlovak Journal of Civil Engineering, 2014
The paper deals with a numerical analysis of the electro-mechanical response of piezoelectric sensors subjected to an external non-uniform displacement field.
Staňák Peter   +3 more
doaj   +1 more source

Performance Investigation of Integrated Model of Quarter Car Semi-Active Seat Suspension with Human Model

open access: yesApplied Sciences, 2020
In this paper, an integrated model of a semi-active seat suspension with a human model over a quarter is presented. The proposed eight-degrees of freedom (8-DOF) integrated model consists of 2-DOF for the quarter car model, 2-DOF for the semi-active seat
Saransh Jain   +3 more
doaj   +1 more source

Proposed standardized definitions for vertical resolution and uncertainty in the NDACC lidar ozone and temperature algorithms – Part 1: Vertical resolution [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
A standardized approach for the definition and reporting of vertical resolution of the ozone and temperature lidar profiles contributing to the Network for the Detection for Atmospheric Composition Change (NDACC) database is proposed.
T. Leblanc   +7 more
doaj   +1 more source

Corrected Fourier series and its application to function approximation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
Any quasismooth function f(x) in a finite interval [0,x0], which has only a finite number of finite discontinuities and has only a finite number of extremes, can be approximated by a uniformly convergent Fourier series and a correction function.
Qing-Hua Zhang   +2 more
doaj   +1 more source

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