bht_link page

Biohydrodynamics Toolbox    

bht_link1, bht_link2

Functions describing polygon-shaped boundary.

Syntax

y = bht_link1(t,der,settings)

y = bht_link2(t,der,settings)

Description

These functions define smoothed polygon-shaped boundaries as parameterized lines over [0,2*pi[. The input variable t (the parameter) must be a vector with all of its elements within [0,2*pi[. The function returns, depending on the flag der:

• der = 0: the points' coordinates corresponding to the parameters t.
• der = 1: the coordinates of the tangent vectors (the first derivative of the parameterization).
• der = 2: the second derivative of the parameterization.

The inpute variable settings is a row vector of four elements for bht_link1 and height elements for bht_link2. It is used to set the boundaries' shapes as shown in the figures below.

Boundaries' view

Here is what the boundaries look like.

See also

Fluid's boundaries

bht_boundary_check

2008 - A. Munnier and B. Pincon (Insitut Elie Cartan and INRIA Lorraine, Projet CORIDA, Nancy, France).