Introduction of background knowledge regarding flow physics and CFD as well as detailed information about the use of AcuSolve and what specific options do.
Collection of AcuSolve simulation cases for which results are compared against analytical or experimental results to demonstrate the accuracy
of AcuSolve results.
Mesh attributes control various aspects of the mesh generation process, including mesh size. Mesh attributes can be
set on a global (whole model) and/or local (model entity) basis.
Mesh size can also be specified as a function of location. Geometric shapes such as spheres,
boxes and cylinders can be drawn and mesh sizes are specified for the volume enclosing these
Zone Mesh Attributes.
The Global Mesh Attributes represent mesh settings that are applied to the entire model. Additionally, the
size specified in this panel is used as the global mesh length scale that is used in the octree method when
evaluating all subsequent mesh sizes.
Every geometric model in AcuConsole contains one or more volume groups. The pipe example model has one volume group called fluid with one geometric
region.
Once the geometry is imported into AcuConsole, it will have one or more surface groups. Each of the surface groups could have one or more geometric faces
associated with it.
The Mesh size type for Surface Mesh Attributes can be Absolute, Relative, Absolute Expression, Relative Expression,
Absolute Anisotropic, Relative Anisotropic or None.
If the Mesh size type is set to None, then AcuConsole uses the mesh size provided on the parent volume group and the Global Mesh Attributes to determine the mesh
size on the face.
The Curvature refinement parameters for a surface work in the same way as the ones used in Volume Mesh Attributes. The only difference is that they are applied on each of the geometric faces in the surface group.
Boundary layer parameters can only be applied in the Mesh Attribute panel for surface groups. To activate boundary
layer specification, the Boundary layer flag must be turned On.
Once the geometry is imported into AcuConsole, it will have one or more surface groups. Each of the surface groups could have one or more geometric faces
associated with it.
Consider the pipe model from the previous examples. The global mesh size is set to a
relative value of 0.1 and mesh size on the inflow surface is set to 0.0025. The mesh
is generated by launching the mesh generator.
Once the mesh is imported into AcuConsole the surface
mesh size on the inflow is found to be finer than the surface mesh on the outflow.
Here the mesh generator used the smaller of 0.0025 and 0.005m for the inflow
surface, and 0.005m everywhere else.
Now, consider adding boundary layers to the wall surface. The boundary layer
attributes are set in the Surface Mesh Attributes panel. Mesh attributes are
de-activated on the inflow surface. Once the mesh is generated with these settings,
boundary layer elements are generated.
As shown above, the default boundary layer settings are used. You can choose to use
different boundary layer element types as well as choose different Resolve
options.