Source
In the Flow Analysis Tree, under Domains, select a fluid domain to see the source in the Properties panel. If you select Create a New Source option under the Flow module, you can introduce the momentum sources and mass sources into a selected volume.
Mass Source
You can add mass source as a Mass Source Per Volume (kg/m3)/s, or a Total Mass Source (kg/s). A positive value for Mass Source Per Volume (kg/m3)/s or the Total Mass Source (kg/s) adds mass to the volume. A negative value removes it.
Momentum Source
You can add momentum source as a Momentum Source Per Volume (N/m3), or a Total Momentum Source (N). Momentum is a vector quantity and is added in terms of X, Y, and Z components. For a total momentum source, the source is momentum/ second with units of kg-m/s2 which is equivalent to a net force (N):
For a source per volume, the source is momentum/second per volume with units of kg-m/s2/m3 which is equivalent to a force per volume (N/m3):
• A source listing appears under the Flow module in the Properties panel when you create a source using Create a New Source. For the Flow module, the possible sources for a selected volume are Momentum Source Per Volume, Total Momentum Source, Mass Source Per Volume, or Total Mass Source.
• If no source is created, the source heading is not visible. Multiple sources are numbered sequentially, such as Source 1, Source 2, Source 3, and so on.
• If you remove a source, the remaining sources are renumbered at 1.
• To remove existing sources, select Remove This Source.