六阶Cahn-Hilliard方程的修改
Sixth order modification of the Cahn-Hilliard equation
AI总结:
本文提出了一种六阶Cahn-Hilliard方程的修改形式,通过改变热力学势的表达式,引入了序参量依赖的平方梯度项和拉普拉斯算子的平方,从而得到六阶微分方程,并研究了其解的参数依赖性。
摘要:
我们考虑了六阶的对流-粘性Cahn-Hilliard方程,与标准四阶Cahn-Hilliard方程不同,是因为热力学势的表达式被修改了。在这样的修改热力学势中,平方梯度项的系数依赖于序参量。它还包含拉普拉斯算子的平方。这导致了一个六阶微分方程以及方程中的额外非线性项。我们得到了几种精确的静态波和行波解,并研究了解对系统参数的依赖性。
英文摘要:
We consider the sixth-order convective-viscous Cahn-Hilliard equation, different from the standard fourth-order Cahn-Hilliard equation due to the modified expression for the thermodynamic potential. In such modified thermodynamic potential the coefficient at the square gradient term is order-parameter-dependent. It also contains the square of the Laplacian. This results in a sixth-order differential equation and additional nonlinear terms in the equation. We obtained several exact static- and traveling wave solutions and studied the dependence of solutions on the parameters of the system.
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