Results 71 to 80 of about 11,306,054 (330)

Approximate Solution of PHI-Four and Allen–Cahn Equations Using Non-Polynomial Spline Technique

Mathematics
The aim of this work is to use an efficient and accurate numerical technique based on non-polynomial spline for the solution of the PHI-Four and Allen–Cahn equations.
Mehboob Ul Haq, Sirajul Haq, Ihteram Ali, Mohammad Javad Ebadi   +3 more
doaj   +1 more source

Soliton propagation in lossy optical fibers

Semina: Ciências Exatas e Tecnológicas, 2019
In this work we study the propagation of solitons in lossy optical fibers. The main objective of this work is to study the loss of energy of the soliton wave during propagation and then to evaluate the impact of this loss on the transmission of the ...
Caroline Dall'Agnol, Paulo Laerte Natti, Eliandro Rodrigues Cirilo, Neyva Maria Lopes Romeiro, Érica Regina TakanoNatti   +4 more
doaj   +1 more source

A Model for Solving the Maxwell Quasi Stationary Equations in a 3-Phase Electric Reduction Furnace [PDF]

Modeling, Identification and Control, 1982
A computer code has been developed for the approximate computation of electric and magnetic fields within an electric reduction furnace. The paper describes the numerical methods used to solve Maxwell's quasi-stationary equations, which are the governing
S. Ekrann, Terje Sira
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Laser Metal Deposited Ti4822 Hollow Pipe: Experimental and Computational Modelling Study

Advanced Engineering Materials, EarlyView.
Laser metal deposition (LMD) of a crack‐free built Ti4822 alloys is challenging. This article reports outstanding characteristics of a hollow pipe that is built with LMD technology when a predicted, nontransformation substrate temperature of 800 °C is used.
Sadiq A. Raji, Monnamme Tlotleng, Samuel Skhosane, Lehlogonolo R. Kanyane, Abimbola P. I. Popoola, Sisa L. Pityana   +5 more
wiley   +1 more source

A Local Strong form Meshless Method for Solving 2D time-Dependent Schrödinger Equations

پژوهش‌های ریاضی, 2018
This paper deals with the numerical solutions of the 2D time dependent Schr¨odinger equations by using a local strong form meshless method. The time variable is discretized by a finite difference scheme. Then, in the resultant elliptic type PDEs, special
Fariba Takhtabnoos, Ahmad Shirzadi
doaj  

Um modelo numérico baseado no sistema de coordenadas curvilíneas para o método MAC simplificado

Semina: Ciências Exatas e Tecnológicas, 2018
Neste trabalho desenvolvemos uma metodologia numérica para estudar alguns fluxos de fluidos incompressíveis sem superfícies livres, usando o sistema de coordenadas curvilíneas e com a geometria do contorno construída através de splines parametrizadas ...
Eliandro Rodrigues Cirilo, Alessandra Negrini Dalla Barba, Paulo Laerte Natti, Neyva Maria Lopes Romeiro   +3 more
doaj   +1 more source

Influence of quark boundary conditions on the pion mass in finite volume

, 2005
We calculate the mass shift for the pion in a finite volume with renormalization group (RG) methods in the framework of the quark-mesons model. In particular, we investigate the importance of the quark effects on the pion mass. As in lattice gauge theory,
B. Klein, H. J. Pirner, J. Braun, J. Zinn-Justin, J. D. Walecka   +4 more
core   +1 more source

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

Advanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

Applications of the nonlinear Klein/Sinh-Gordon equations in modern physics: a numerical study

Mathematical Modelling and Control
In this article, a hybrid numerical scheme based on Lucas and Fibonacci polynomials in combination with Störmer's method for the solution of Klein/Sinh-Gordon equations is proposed.
Ihteram Ali, Imtiaz Ahmad
doaj   +1 more source