Orthonormal eigenfunction expansions for sixth-order boundary value problems
Orthonormal eigenfunction expansions for sixth-order boundary value problems
复制标题
六阶边值问题的正交本征函数展开式
DOI:
10.1088/1742-6596/2675/1/012016
复制
发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Christov, I C
中科院分区:
文献类型:
--
作者:
Papanicolaou, N C;Christov, I C
Sixth-order boundary value problems (BVPs) arise in thin-film flows with a surface that has elastic bending resistance. To solve such problems, we first derive a complete set of odd and even orthonormal eigenfunctions—resembling trigonometric sines and cosines, as well as the so-called" beam" functions. These functions intrinsically satisfy boundary conditions (BCs) of relevance to thin-film flows, since they are the solutions of a self-adjoint sixth-order Sturm–Liouville BVP with the same BCs. Next, we propose a Galerkin spectral approach for sixth-order problems; namely the sought function as well as all its derivatives and terms appearing in the differential equation are expanded into an infinite series with respect to the derived complete orthonormal (CON) set of eigenfunctions. The unknown coefficients in the series expansion are determined by solving the algebraic system derived by taking successive inner products with each member of the CON set of eigenfunctions. The proposed method and its convergence are demonstrated by solving two model sixth-order BVPs.
登录
查看更多内容
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
H. Stone
通讯作者:
H. Stone
影响因子:
3.7
作者:
E. Boyko;R. Eshel;K. Gommed;A. Gat;M. Bercovici
通讯作者:
M. Bercovici
DOI:
--
发表时间:
2005
期刊:
Die Naturwissenschaften
影响因子:
--
作者:
Mk.
通讯作者:
Mk.
影响因子:
3.7
作者:
A. Tulchinsky;A. Gat
通讯作者:
A. Gat
影响因子:
3.7
作者:
J. Lister;Dominic J. Skinner;Timothy Large
通讯作者:
Timothy Large