Theory-based Quiz

Ansys Fluent Meshing Watertight Geometry Workflow - Theory Quiz

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1 / 30

In the "Generate the Surface Mesh" task of the Ansys Fluent Meshing Watertight Geometry Workflow, the growth rate

Refers to the growth of element face area with each succeeding layer of elements away from a surface inside the volume

Refers to the growth of cells in the boundary layer

Refers to the growth of element edge length with each succeeding layer of elements along a surface.

2 / 30

The 'Merge Back the Separated Boundary Zones?' option appears in the Generate the Volume Mesh task when _____ option is enabled during surface mesh generation

Separate out boundary zones by angle

Auto Assign Zone Types

Check Self-intersection

Invoke Quality Improve

3 / 30

Reducing the value of the growth rate for a face sizing would:

Impose the cell size growth along the selected face.

Impose a smaller uniform cell size in the volume

Impose a smaller uniform cell size on the surface

Impose a smaller size change from a cell to its adjacent cell moving away from the selected face

4 / 30

The peel layers input for the poly-hexcore volume fill method, when no boundary layers are included in the computational model, controls the gap between____

Two levels of Cartesian hexahedral cells

The polyhedral cells and the core Cartesian hexahedral cells

The geometry and the polyhedral cells

The geometry and the core Cartesian hexahedral cells

5 / 30

Share topology to a geometry containing BOIs and FOIs:

All BOIs and FOIs must be excluded from share topology

All BOIs and FOIs must be included for share topology

Only BOIs must be included for share topology

Only FOIs must be excluded from share topology

6 / 30

In the Preferences panel, under the Meshing Workflow settings, if "do not save data" is selected for the "saving data for editing tasks", then (while using the Fluent Meshing Watertight Geometry Workflow):

If a task is edited after being completed, only this task will be reprocessed.

If a task is edited after being completed, all the upstream tasks will be reprocessed.

If a task is edited after being completed, only the current and the previous task will be reprocessed.

7 / 30

In the "Generate the Surface Mesh" task of the Ansys Fluent Meshing Watertight Geometry Workflow, the global size functions are applied:

To all the volumes in the CAD geometry.

Only to the surfaces of the CAD geometry with local size controls.

To all surfaces in the CAD geometry.

To all surfaces of the CAD geometry that do not have any local sizing.

8 / 30

For improved robustness and speed of interface connect share topology operation, which of the following is recommended to be done at the CAD creation phase?

Creation of named selections for contact topologies

Deletion of solid regions from the CAD model

Volume extraction

Share topology

9 / 30

Which of the following growth rate values would generate the finest surface mesh using the watertight geometry workflow (assume that all other settings under the "Generate the Surface Mesh" task are maintained the same)?

1.05

1.1

1.2

1.3

10 / 30

When a mesh file is saved in the default Common Fluids Format (CFF), which of the following gets appended to the filename?

.msh

.msh.gz

.msh.h5

11 / 30

The 'Global Boundary Layer Settings' options appear in the Generate the Volume Mesh task only when ________ are included in the computational model

Multiple regions

Solid regions

BOIs

Boundary layers

12 / 30

Which of the following sentences about FOI is false?

An FOI influences the volume mesh cell size nearby its surface.

An FOI is used to set up local mesh sizing.

Boundary layer mesh can be applied to an FOI.

An FOI is not a part of the geometry for physics simulations.

13 / 30

In Watertight Geometry Workflow, 'Transform Volume Mesh' task can be used to perform which of the following transformations on the volume mesh? Select the two correct answers

Modify the cell type in the volume mesh

Rotate the volume mesh

Translate the volume mesh

Convert 3D mesh to 2D mesh

14 / 30

The growth rate of the boundary layer mesh is automatically estimated by the Watertight Geometry Workflow when using which of the following offset methods for boundary layer mesh generation?

Aspect ratio

Last ratio

Uniform

Smooth Transition

15 / 30

The 'List All Boundaries' option is used to:

Show boundaries based on the labels and the zones

Make the 'Wall' type boundaries visible in the table

None of the above

Make the internal boundaries visible in the table

16 / 30

Which of the following is NOT a setting for Proximity size control

Cells per gap

Max

Curvature Normal Angle

Local min

17 / 30

What is the target region of a face of influence (FOI) local sizing?

The model region adjacent to the surface selected as FOI

Only the surface mesh of the boundary selected as FOI

Only the model region within the solid body selected as FOI

Only the model region within the closed surface selected as FOI

18 / 30

In which of the following cases does the 'Update Boundaries' task automatically appear in the workflow?Select the two correct answers.

When geometry type is set to 'only fluid'

When 'Do you need to Apply Share Topology?' option is set to 'yes'

When the geometry type is set to 'both fluid and sold'

When geometry type is set to 'only solid'

19 / 30

A surface mesh is imported in the Watertight Geometry Workflow. NO local sizing has been applied on the boundaries. In this case, which of the following options are available for remeshing the boundaries in the Generate the Surface Mesh task? (Select the two correct answers)

Only walls

Assigned in Local Sizing and Selected

All

None

20 / 30

A body of influence or BOI is:

A global sizing control type

Another name for the body sizing control type

A local sizing control type

A sizing control to create inflation layers for the boundary layer mesh.

21 / 30

It is mandatory for the max gap distance value to be _______ the minimum size used to generate the surface mesh

Greater than half

Less than or equal to half

Less than or equal to

Greater than

22 / 30

Which of the following options in the 'Add Linear Mesh Pattern' task visually marks the connected surfaces after the pattern creation?

Pitch

Invoke Custom Numbering or Pattern

Highlight Unit Alignment

23 / 30

Which of the following is true regarding the geometry used for creating an offset surface local refinement region?

Geometry must be a closed entity

Geometry must be an open entity

Geometry can either be an open or a closed entity

24 / 30

A surface mesh is imported in the Watertight Geometry Workflow. Then, a local sizing has been applied on the boundaries. In this case, which of the following options are available for remeshing the boundaries in the Generate the Surface Mesh task? (Select the two correct answers)

Assigned in Local Sizing and Selected

None

All

Selected

25 / 30

Consider a model having three fluid regions, which of the following are true with regards to the 'Add Boundary Layers' task? Select the two correct answers.

Boundary layers can be created on all the walls, in all the fluid regions in a single operation

The boundary layers in all the three fluid regions must have the same offset method

Boundary layers have to be either created in all the fluid regions or none at all

Boundary layers can be created in ONLY one of the fluid regions, if required

26 / 30

A solid body used as BOI:

Cannot be used to set up a region in the simulation.

Cannot be used to specify the maximum cell size in a region.

Can only be labeled as "boi".

Cannot be used to set up local mesh sizing.

27 / 30

In the Import Geometry task, when CAD is selected from the file format dropdown list, the 'Units' parameter refers to _____

The units into which the final volume mesh will be scaled to

The unit system CAD was created in

The working units the user wants to work in

28 / 30

By default, Ansys Fluent assumes all regions of a CAD geometry to be ______

Dead regions

Solid regions

Fluid regions

29 / 30

Formation of crevices or pinching effect at sharp corners such as 90 degree bends is a major drawback of which of the following offset methods for boundary layer mesh generation?

Uniform

Last ratio

Smooth Transition

Aspect ratio

30 / 30

At what stage is the 'Check Geometry' operation recommended in Ansys SpaceClaim?

Ansys Fluent Meshing Watertight Geometry Workflow

Total Available Time - 60 mins

Total Number of Questions - 30