scholarly journals Constructing Uniform Approximate Analytical Solutions for the Blasius Problem

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Beong In Yun
Keyword(s):  
Weight Function ◽  
Analytical Solutions ◽  
Series Solution ◽  
Numerical Results ◽  
Infinite Interval ◽  
Constructive Method ◽  
Reference Solution ◽  
Blasius Problem ◽  
Approximate Analytical Solutions ◽  
Uniform Accuracy

We propose a simple constructive method which assures uniform accuracy of the approximate analytical solutions for the Blasius problem on the semi-infinite interval0,∞. The method is based on a weight function having an S-shape to reflect a series solution near the originx=0and a reference solution far from the origin. Numerical results show the efficiency of the proposed method.

APPROXIMATE RELATIVISTIC κ-STATE SOLUTIONS TO THE DIRAC-HYPERBOLIC PROBLEM WITH GENERALIZED TENSOR INTERACTIONS

2013 ◽  
Vol 22 (07) ◽  
pp. 1350048 ◽  
Author(s):  
AKPAN N. IKOT ◽  
H. HASSANABADI ◽  
B. H. YAZARLOO ◽  
S. ZARRINKAMAR
Keyword(s):  
Dirac Equation ◽  
Analytical Solutions ◽  
Tensor Interaction ◽  
Numerical Results ◽  
Hyperbolic Problem ◽  
Energy Eigenvalues ◽  
Approximate Analytical Solutions ◽  
Frame Work ◽  
Nu Method

In this paper, we present the approximate analytical solutions of the Dirac equation for hyperbolical potential within the frame work of spin and pseudospin symmetries limit including the newly proposed generalized tensor interaction (GTI) using the Nikiforov–Uvarov (NU) technique. We obtained the energy eigenvalues and the corresponding eigenfunction using the generalized parametric NU method. The numerical results of our work reveal that the presence of the GTI changes the degeneracy between the spin and pseudospin state doublets.

scholarly journals A Homotopy-Analysis Approach for Nonlinear Wave-Like Equations with Variable Coefficients

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Afgan Aslanov
Keyword(s):  
Boundary Conditions ◽  
Nonlinear Equations ◽  
Nonlinear Wave ◽  
Analytical Solutions ◽  
Wave Operator ◽  
Series Solution ◽  
Variable Coefficients ◽  
Analysis Approach ◽  
Approximate Analytical Solutions ◽  
Homotopy Analysis

We are interested in the approximate analytical solutions of the wave-like nonlinear equations with variable coefficients. We use a wave operator, which provides a convenient way of controlling all initial and boundary conditions. The proposed choice of the auxiliary operator helps to find the approximate series solution without any discretization, linearization, or restrictive assumptions. Several examples are given to verify the reliability and efficiency of the method.

scholarly journals Approximate Analytical Solutions Using Hyperbolic Functions for the Generalized Blasius Problem

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Beong In Yun
Keyword(s):  
Boundary Conditions ◽  
Analytical Solutions ◽  
Hyperbolic Functions ◽  
Blasius Problem ◽  
Approximate Analytical Solutions ◽  
The Given

We propose simple forms of approximate analytical solutions for the generalized Blasius problem based on the given boundary conditions and some known properties of the solution. The efficiency of the proposed solutions is shown for various cases. As a result, one can see that the solutions are uniformly accurate over the whole region.

scholarly journals SOLUTIONS OF THE DIRAC EQUATION WITH THE SHIFTED DENG–FAN POTENTIAL INCLUDING YUKAWA-LIKE TENSOR INTERACTION

2013 ◽  
Vol 22 (08) ◽  
pp. 1350062 ◽  
Author(s):  
W. A. YAHYA ◽  
B. J. FALAYE ◽  
O. J. OLUWADARE ◽  
K. J. OYEWUMI
Keyword(s):  
Dirac Equation ◽  
Analytical Solutions ◽  
Approximation Scheme ◽  
Pseudospin Symmetry ◽  
Tensor Interaction ◽  
Numerical Results ◽  
Energy Eigenvalues ◽  
Approximate Analytical Solutions ◽  
Uvarov Method

By using the Nikiforov–Uvarov method, we give the approximate analytical solutions of the Dirac equation with the shifted Deng–Fan potential including the Yukawa-like tensor interaction under the spin and pseudospin symmetry conditions. After using an improved approximation scheme, we solved the resulting schrödinger-like equation analytically. Numerical results of the energy eigenvalues are also obtained, as expected, the tensor interaction removes degeneracies between spin and pseudospin doublets.

Approximate analytical solutions of stability problems for skew plates under combined loading

2011 ◽  
Vol 54 (2) ◽  
pp. 115-124 ◽  
Author(s):  
N. I. Akishev ◽  
I. I. Zakirov ◽  
V. A. Ivanov ◽  
V. N. Paimushin ◽  
M. A. Shishov
Keyword(s):  
Analytical Solutions ◽  
Combined Loading ◽  
Stability Problems ◽  
Approximate Analytical Solutions

Bifurcation Trees of Periodic Motions to Chaos in a Parametric, Quadratic Nonlinear Oscillator

2014 ◽  
Vol 24 (05) ◽  
pp. 1450075 ◽  
Author(s):  
Albert C. J. Luo ◽  
Bo Yu
Keyword(s):  
Fourier Series ◽  
Nonlinear Systems ◽  
Analytical Solutions ◽  
Nonlinear Oscillator ◽  
Series Solution ◽  
Parametric Oscillator ◽  
Periodic Motions ◽  
Parametric Oscillators ◽  
Harmonic Term ◽  
Nonlinear Behaviors

In this paper, bifurcation trees of periodic motions to chaos in a parametric oscillator with quadratic nonlinearity are investigated analytically as one of the simplest parametric oscillators. The analytical solutions of periodic motions in such a parametric oscillator are determined through the finite Fourier series, and the corresponding stability and bifurcation analyses for periodic motions are completed. Nonlinear behaviors of such periodic motions are characterized through frequency–amplitude curves of each harmonic term in the finite Fourier series solution. From bifurcation analysis of the analytical solutions, the bifurcation trees of periodic motion to chaos are obtained analytically, and numerical illustrations of periodic motions are presented through phase trajectories and analytical spectrum. This investigation shows period-1 motions exist in parametric nonlinear systems and the corresponding bifurcation trees to chaos exist as well.

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