Analytical Solutions for an Escape Problem in a Disc with an Arbitrary Distribution of Exit Holes Along Its Boundary
Analytical Solutions for an Escape Problem in a Disc with an Arbitrary Distribution of Exit Holes Along Its Boundary
复制标题
出口孔沿边界任意分布的圆盘逃逸问题的解析解
DOI:
10.1007/s10955-016-1653-2
复制
发表时间:
2016
影响因子:
1.6
通讯作者:
Marshall J
中科院分区:
文献类型:
--
作者:
Marshall J
We analytically construct solutions for the mean first-passage time and splitting probabilities for the escape problem of a particle moving with continuous Brownian motion in a confining planar disc with an arbitrary distribution (i.e., of any number, size and spacing) of exit holes/absorbing sections along its boundary. The governing equations for these quantities are Poisson’s equation with a (non-zero) constant forcing term and Laplace’s equation, respectively, and both are subject to a mixture of homogeneous Neumann and Dirichlet boundary conditions. Our solutions are expressed as explicit closed formulae written in terms of a parameterising variable via a conformal map, using special transcendental functions that are defined in terms of an associated Schottky group. They are derived by exploiting recent results for a related problem of fluid mechanics that describes a unidirectional flow over “no-slip/no-shear” surfaces, as well as results from potential theory, all of which were themselves derived using the same theory of Schottky groups. They are exact up to the determination of a finite set of mapping parameters, which is performed numerically. Their evaluation also requires the numerical inversion of the parameterising conformal map. Computations for a series of illustrative examples are also presented.
登录
查看更多内容
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
David Mumford;C. Series;David Wright
通讯作者:
David Wright
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
A. Singer;Z. Schuss;D. Holcman
通讯作者:
D. Holcman
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
D. Crowdy;Jonathan S. Marshall
通讯作者:
Jonathan S. Marshall
影响因子:
1.2
作者:
D. Crowdy;E. Kropf;Christopher C. Green;Mohamed M. S. Nasser
通讯作者:
Mohamed M. S. Nasser
影响因子:
2.1
作者:
Crowdy D
通讯作者:
Crowdy D