ALE

Purpose:

To provide LS-DYNA users with a user-friendly ALE/FSI preprocessing tool. This tool is designed to greatly facilitate the ALE/FSI model buildup process. It guides users through different aspects of ALE/FSI model setup. Its embedded check can ensure minimum input file errors.

Also this tool will generate the initial volume fractions for immediate onscreen display.

Function:

Define Group : Add ALE Multi-Material Groups and Specify their mesh parts.

Define Material: Add MAT + EOS + HOURGLASS sets and assign them to all AMMGs. User can use their own hourglass definitions. If not, the default hourglass formulation of 1 and coefficient of 1.0E-6 will be used.

Define Volume : Fill in different AMMGs .

Define Control :Choose either Donor Cell, which is of 1st order or Van Leer, 2nd order advention scheme. Other control parameters such as termination time and number of binary plots are also specified in this panel.

Define IC/BC : These tabs are used to define the initial and boundary conditions.

Define Mesh Motion : ALE mesh motions are defined here.

Define FSI : Fluid-structure interaction can be specified here.

Sample:

1. Explosion under water : a simple sample to show the use of this application.

2. Initial Volume Filling : a simple sample to show how to filling ale material into the mesh.

Dialog:

See samples for more information.