Abaqus CEL Initial Water Level Modeling Method

The rain in Beijing has come to a temporary end for now. Here is a brief summary of the CEL initial water level modeling method in Abaqus.

1. Uniform Direct Assignment

Applicable scenarios:

Suitable for use when the water level shape is regular, making it convenient to partition from existing geometry.

Modeling process:

(1) Set creation: Create the Eulerian domain, then use partitioning tools to divide the Eulerian domain, and separately define a set for the initial water level portion;

(2) Initial water level definition: In the predefined field of the Load module, select Uniform (default), select the set defined in (1), and set the volume fraction to 1 and the rest to 0, as follows:

Corresponding keyword:

Note: A volume fraction of 1 means completely filled with water, and 0 means void.

2. Volume Fraction Tool

Applicable scenarios:

Suitable for complex shapes that cannot be directly obtained through partitioning.

Modeling process:

(1) Create reference part: The geometric shape is the initial water level. Note that the shape must be a 3D solid or shell;

(2) Eulerian domain meshing: Before defining the initial water level, the Eulerian domain needs to be meshed because this tool calculates how much of each Eulerian element is occupied by water;

(3) Discrete field creation: Use the volume fraction tool to generate the required discrete field from the established Eulerian domain using the reference part. The volume fraction tool entry is as follows:

(4) Initial water level definition: In the predefined field of the Load module, select Discrete Field, and select the discrete field set created in (3), as follows:

Corresponding keyword:

3. Results Comparison

The main comparison is for the same scenario, using the two methods to calculate results, which are basically consistent, as follows:

Note: During post-processing, try to hide the mesh, use 100% averaging, and then enable the semi-transparent tool.