Tips & Tricks

Here you will find articles on how to solve specific issues related to ESI's software solutions. Missing ESI products will be added progressively. Each article has a short abstract which is accessible to everyone. As logged users you can see the full article with all attached screenshots, and you can post comments related to each article

Using Region sources in CFD-VisCART

Using Region sources in CFD-VisCART
In order to control grid spacing at user-defined locations, mesh sources are a common tool in CFD-VisCART (Figure 1). Point, Line, Curve, Plane, Box and Surface sources have been available for several years. Cylinder and Sphere sources were introduced a few years back... read more
CFD
16
0

Automatic covering of larger unwanted holes in CFD-VisCART

Automatic covering of larger unwanted holes in CFD-VisCART
CFD-VisCART meshing automatically closes or covers holes in the geometry that are smaller in size than the cell size specified at the surfaces. To cover LARGER holes, the ‘Max Hole Size to Cover’ feature can be used. This feature, introduced in... read more
CFD
6
0

Grouping parts during data import in CFD-VisCART

Grouping parts during data import in CFD-VisCART
When dealing with complex industrial models such as cars and airplanes, hundreds of parts need to be managed. Each one of these parts may also be subdivided into different components. In order to easily manipulate these different parts and components in CFD-VisCART,... read more
CFD
8
0

CFD-VisCART: Mesh Extrusion

CFD-VisCART: Mesh Extrusion
In most CFD simulations, it is required to place inlets/outlets far enough from the region of interest in order to reduce their influence on the solution. In many applications, this can be done by extruding existing inlets/outlets BC patches away from the domain. read more
CFD
8
0

Preserving boundaries between patches with CFD-VisCART’s Single Domain mesher

Preserving boundaries between patches with CFD-VisCART’s Single Domain mesher
The ‘Preserve Features’ option does very well in preserving features between geometry patches – as long as the patches are not coplanar (dihedral angle = 0) or include a very small dihedral angle between them. read more
CFD
9
0

CFD-VisCART: Suppression of parts for mesh generation

CFD-VisCART: Suppression of parts for mesh generation
When performing an analysis comparing component A versus component B, it is useful to have both components stored in the same file for physical comparison and documentation purposes. However, when generating the mesh for the analysis, only one of the parts should be... read more
CFD
10
0

Boundary Layer meshing in CFD-VisCART

Boundary Layer meshing in CFD-VisCART
In order to accurately capture flow field characteristics, a fine mesh near boundary walls is often needed. This is commonly referred to as the Boundary Layer mesh or simply, Boundary Layers. When dealing with structured meshes, one would cluster grid points near... read more
CFD
31
0

"Preserve Feature" option in CFD-VisCART

"Preserve Feature" option in CFD-VisCART
When dealing with the multi-domain mesher in CFD-VisCART, the ‘Preserve Feature’ option can help you get a mesh that closely follow the original geometry. The meshing algorithm controls the refinement based on the detected ‘Critical... read more
CFD
11
0

Local cell size control option in CFD-VisCART

Local cell size control option in CFD-VisCART
It is often necessary to refine or coarsen the mesh in some regions of your model, whether it be to allow the solver to correctly capture gradients of variables (refinement), or reduce the mesh density in some areas to lower the total cell count. In CFD-VisCART, there... read more
CFD
8
0

Surface mesh coarsening option for Shrink-Wrapped meshes

Surface mesh coarsening option for Shrink-Wrapped meshes
When generating a shrink-wrapped surface mesh, one could end up with a large number of faces (triangles) in an attempt to capture small features. The Mesh Decimation tool in CFD-VisCART allows the user to reduce the number of faces without losing features preserved... read more
CFD
12
0

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