LIU Lihan. The Uniqueness and Existence of Solutions for the 3-D Helmholtz Equation in a Coaxial Waveguide with Unbounded Perturbation[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2014,53(3):35-42.
LIU Lihan. The Uniqueness and Existence of Solutions for the 3-D Helmholtz Equation in a Coaxial Waveguide with Unbounded Perturbation[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2014,53(3):35-42.DOI:
The 3-D Helmholtz equation in a coaxial waveguide with unbounded perturbation is studied
allowing the presence of guided waves
while a few assumptions on the perturbation and the source term are adapted. On the basis of the Green's function for the 3-D homogeneous Helmholtz equation in a coaxial waveguide without perturbation
a generalized (out-going) Sommerfeld-Rellich radiation condition is introduced. And then the uniqueness and existence of solutions for the studied 3-D Helmholtz equation satisfying some radiation conditions are proven.
关键词
Helmholtz方程共轴波导扰动解的存在性解的唯一性Green函数辐射条件
Keywords
Helmholtz equationcoaxial waveguideunbounded perturbationexistence of solutionsuniqueness of solutionsGreen's functionradiation condition