Absolute Mesh Size
If the Mesh size type is set to Absolute, then the Absolute mesh size value needs to be provided.
It should be noted that the Absolute mesh size has a length unit associated with it, which can be modified.
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AcuSolve is a leading general purpose CFD solver that is capable of solving the most demanding industrial and scientific applications.
Discover AcuSolve functionality with interactive tutorials.
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.
AcuSolve command descriptions and corresponding examples.
AcuSolve utility programs covering preparatory and post-processing as well as user-defined functions and utility scripts.
Customization of AcuSolve allowing you to customize certain capabilities of the solver.
Instruction of the mesh generation capability in AcuConsole, a GUI based pre-processor for AcuSolve.
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.
AcuMeshSim is a standalone C++ program. It can be run from the command line, but is more often run directly from AcuConsole.
Mesh controls are used to control the size and characteristics of the mesh in different areas of the model.
Mesh size can be roughly equated to the edge length of the elements generated by the mesh generator.
Curvature meshing attributes are extremely useful for capturing the curvature in the model during mesh generation.
Periodic boundary conditions are used in AcuSolve when only a subset of the full flow domain is simulated.
In certain simulations the flow domain may have a very high aspect ratio.
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.
All of the mesh features in this section are advanced, and in most cases you do not need to change any of them.
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.
This option tells the mesher not to mesh the volume regions in this group. Note that any surfaces attached to the volume that are shared by other active volume groups will still be meshed.
If the Mesh size type is set to Absolute, then the Absolute mesh size value needs to be provided.
If the Mesh size type is set to Relative, Relative mesh size needs to be provided. The resulting element size is computed by multiplying the relative mesh size with the maximum edge length of the bounding box of the individual regions in a volume group.
Mesh sizes for volumes can be specified as expressions. To specify an Absolute Expression, set the Mesh size type to Absolute Expression.
To specify a Relative Expression, set the Mesh size type to Relative Expression.
This option allows you to enter an absolute size and a tensor that defines the orientation of the anisotropy.
This option allows you to enter a relative size and a tensor that defines the orientation of the anisotropy.
This setting tells the mesher to apply no mesh controls to the volume group. Note that the volume may still inherit mesh controls from the global level and surfaces may inherit controls from adjacent volumes.
Turning On the Curvature refinement parameters for the volume groups gives access to the Curvature angle and Curvature mesh size factor settings.
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.
To properly set periodic boundary conditions in AcuSolve, the mesh nodes on periodic faces must match after applying the periodic transformation.
Extrusion meshing is a technique in which structured mesh is created in volume and on surface entities.
The Zone Mesh Attributes panel provides a method for you to set mesh sizes in regions that are independent of the CAD model.
An edge mesh specifies mesh attributes along a selected edge of a model.
Generating a mesh using AcuConsole requires you to set up the mesh attributes and open the Launch AcuMeshSim dialog by clicking Tools > Generate Mesh.
Customization of AcuConsole allowing you to improve your particular workflow.
Commands of AcuTrace, a particle tracer that runs as a post-processor to or a co-processor with AcuSolve.
Instructions to define additional solution quantities of AcuTrace called user equations.
Usage of AcuFieldView, an OEM version of Intelligent Light’s FieldView post-processing software.
Instruction of the AcuReport tool, a standalone post-processor batch tool used to generate a report from an AcuSolve solution database.
Instruction of the mesh generation capability in AcuConsole, a GUI based pre-processor for AcuSolve.
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.
If the Mesh size type is set to Absolute, then the Absolute mesh size value needs to be provided.
If the Mesh size type is set to Absolute, then the Absolute mesh size value needs to be provided.
It should be noted that the Absolute mesh size has a length unit associated with it, which can be modified.
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