olink

NAME

olink

SYNOPSIS

          olink e1 e2 [-b break] [-l rest] [-s stiff]

DESCRIPTION

olink creates creates one link between each immersed boundary point in entity e1 and a corresponding immersed boundary point on entity e2.

olink requires two arguments. These are;

• e1 - the name of one of the linked entities.
• e2 - the name of the other linked entity.

To link two entities, they must each be named. Therefore, in the definition of those entities, the -N or -A flags must be used.

olink interpretes the following options.

• -b break = link breaking length(as a fraction of the initial length)
• -l rest = link resting length (as a fraction of the initial length)
• -s stiff = stiffness of the elastic springs

To use olink, the two entities that are linked must have an identical number of immersed boundary points. The user can ensure this by using the -n command when specifying the entities.

The links are formed by the following method. Let x_j be the jth point on entity e1 and let X_j be the jth point on entity e2. Then a link is formed from x_j to X_j for every pair.

To make a logical linking structure, the first point on entity e1 should be closer to the first point on entity e2 than to any other point on entity e2. This is not a requirement of olink however.

SEE ALSO

spring, blink, link, slink

EXAMPLE

          circle 0.25 1.25 0.05 -N 1 -n 100
          circle 0.25 1.25 0.07 -N 2 -n 100
          olink 1 2

This code establishes a 100 link network between the two concentric circles.