关于对流-扩散问题格林函数估计的尖锐性
On the sharpness of Green's function estimates for a convection-diffusion problem
AI总结:
针对三维具有特征层的线性奇异摄动对流-扩散问题,通过建立格林函数及其导数的L1范数下界,证明了先前所得上界的尖锐性。
摘要:
本文考虑三维空间中具有特征层的线性奇异摄动对流-扩散问题。我们证明了最近获得的格林函数及其导数在$L_1$范数下的上界的尖锐性。为此,本文建立了相应的下界。上下界均明确显示了与奇异摄动参数的任何依赖关系。
英文摘要:
Linear singularly perturbed convection-diffusion problems with characteristic layers are considered in three dimensions. We demonstrate the sharpness of our recently obtained upper bounds for the associated Green's function and its derivatives in the $L_1$ norm. For this, in this paper we establish the corresponding lower bounds. Both upper and lower bounds explicitly show any dependence on the singular perturbation parameter.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。