A class of nonlinear differential-integral singular perturbation problem for the disturbed evolution equations is studied. Using the singular perturbation method, the structure of solution to problem is discussed in t...A class of nonlinear differential-integral singular perturbation problem for the disturbed evolution equations is studied. Using the singular perturbation method, the structure of solution to problem is discussed in the cases of two small parameters and under the suitable conditions. Firstly, the outer solution to boundary value problem is given. Secondly, constructing the non-singular coordinate system near the boundary, the variables of multiple scales is introduced to obtain the boundary layer corrective term for the solution. Then the stretched variable is applied to get the initial layer correction term. Finally, using the fix point theorem, the uniformly valid asymptotic expansion of the solution to problem is proved. The proposed method possesses the advantages of convenient use and high accuracy.展开更多
基金Supported by the National Natural Science Foundation of China(11202106)the Natural Science Foundation of the Education Department of Anhui Province(KJ2017A702)the Key Projects of Outstanding Young Talents of Universities in Anhui Province(gxyqZD2016520)
文摘A class of nonlinear differential-integral singular perturbation problem for the disturbed evolution equations is studied. Using the singular perturbation method, the structure of solution to problem is discussed in the cases of two small parameters and under the suitable conditions. Firstly, the outer solution to boundary value problem is given. Secondly, constructing the non-singular coordinate system near the boundary, the variables of multiple scales is introduced to obtain the boundary layer corrective term for the solution. Then the stretched variable is applied to get the initial layer correction term. Finally, using the fix point theorem, the uniformly valid asymptotic expansion of the solution to problem is proved. The proposed method possesses the advantages of convenient use and high accuracy.
