## Cauchy boundary condition

In mathematics , a Cauchy (pronounced /koʊˈʃiː/ ) **boundary condition** imposed on an ordinary differential equation or a partial differential equation specifies both the values a solution of a differential equation is to take on the **boundary** of the domain and the normal derivative

**wikipedia.org**| 2011/8/26 3:57:58

## Dirichlet boundary condition

In mathematics , the Dirichlet (or first-type ) **boundary condition** is a type of **boundary condition** , named after Johann Peter Gustav Lejeune Dirichlet (1805–1859) who studied under Cauchy and succeeded Gauss at University of Göttingen . [ 1 ] When imposed on an ordinary or a partial

**wikipedia.org**| 2011/6/8 17:14:48

## No-slip condition

In fluid dynamics , the no-slip **condition** for viscous fluids states that at a solid **boundary** , the fluid will have zero velocity relative to the **boundary** . The fluid velocity at all fluid–solid boundaries is equal to that of the solid **boundary** . [ 1 ] Conceptually, one can think of the

**wikipedia.org**| 2011/4/29 8:28:43

## Flood fill

themselves into a corner. This is also a method for solving mazes. The four pixels making the primary **boundary** are examined to see what action should be taken. The painter could find themselves in one of several conditions: All four **boundary** pixels are filled. Three of the **boundary** pixels

**wikipedia.org**| 2011/5/6 7:44:19

## Free boundary problem

In mathematics , a free **boundary** problem is a partial differential equation to be solved for both an unknown function u and an unknown domain Ω. The segment Γ of the **boundary** of Ω which is not known at the outset of the problem is the free **boundary** . The classic example is the melting

**wikipedia.org**| 2011/7/1 8:14:43

## Boundary layer

In physics and fluid mechanics , a **boundary** layer is that layer of fluid in the immediate vicinity of a bounding surface where effects of viscosity of the fluid are considered in detail. In the Earth's atmosphere , the planetary **boundary** layer is the air layer near the ground affected

**wikipedia.org**| 2011/7/21 11:22:38

## Stokes boundary layer

In fluid dynamics , the Stokes **boundary** layer , or oscillatory **boundary** layer , refers to the **boundary** layer close to a solid wall in oscillatory flow of a viscous fluid . Or, it refers to the similar case of an oscillating plate in a viscous fluid at rest, with the oscillation direction

**wikipedia.org**| 2011/5/1 8:41:06

## Boundary value problem

In mathematics , in the field of differential equations , a **boundary** value problem is a differential equation together with a set of additional restraints, called the **boundary** conditions . A solution to a **boundary** value problem is a solution to the differential equation which also satisfies

**wikipedia.org**| 2011/5/25 17:06:03

## Elliptic boundary value problem

In mathematics , an elliptic **boundary** value problem is a special kind of **boundary** value problem which can be thought of as the stable state of an evolution problem . For example, the Dirichlet problem for the Laplacian gives the eventual distribution of heat in a room several hours after

**wikipedia.org**| 2011/5/5 6:56:08

## Irish Boundary Commission

The Irish **Boundary** Commission was a commission which met in 1924–25 to decide on the precise delineation of the border between the Irish Free State and Northern Ireland . The 1921 Anglo-Irish Treaty , which ended the Anglo-Irish War , provided for such a commission if Northern Ireland

**wikipedia.org**| 2011/8/8 11:47:29