An artificial boundary condition for an advection–diffusion equation
An artificial boundary condition for an advection–diffusion equation
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平流扩散方程的人工边界条件
DOI:
10.1002/mma.1670140302
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发表时间:
1991
影响因子:
2.9
通讯作者:
J. Lohéac
中科院分区:
文献类型:
--
作者:
J. Lohéac
Consider the advection-diffusion equation: u t +au x1 -vΔu=0 in R n xR + with initial data u 0 ; the support of u 0 is contained in R - n (x 1 <0) and a:R n →R is positive. In order to approximate the full space solution by the solution of a problem in R - n xR + , we propose the artificial boundary condition; u t +au x1 =0 on Σ. We study this by means of a transmission problem: the error is an O(v 2 ) for small values of the viscosity v