Analytical, semi-analytical, and numerical solutions for the Cahn–Allen equation
Mostafa M. A. Khater, Choonkil Park, Dianchen Lu, Raghda A. M. Attia
Abstract
Abstract This paper studies the analytical, semi-analytical, and numerical solutions of the Cahn–Allen equation, which plays a vital role in describing the structure of the dynamics for phase separation in Fe – Cr – X ( $X=Mo,Cu$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>X</mml:mi><mml:mo>=</mml:mo><mml:mi>M</mml:mi><mml:mi>o</mml:mi><mml:mo>,</mml:mo><mml:mi>C</mml:mi><mml:mi>u</mml:mi></mml:math> ) ternary alloys. The modified Khater method, the Adomian decomposition method, and the quintic B-spline scheme are implemented on our suggested model to get distinct kinds of solutions. These solutions describe the dynamics of the phase separation in iron alloys and are also used in solidification and nucleation problems. The applications of this model arise in many various fields such as plasma physics, quantum mechanics, mathematical biology, and fluid dynamics. The comparison between the obtained solutions is represented by using figures and tables to explain the value of the error between exact and numerical solutions. All solutions are verified by using Mathematica software.