Welcome to Our 10-Minute Demonstration on ANSYS Fluent Material Processing Workspace for High Viscous Flow Modeling
In this demonstration, we will guide you through the process of setting up a high viscous flow model using ANSYS Fluent. We will utilize the Fluent GUI and Polyflow as the solver to demonstrate a simple direct extrusion modeling case.
Getting Started
- Launch Fluent Launcher.
- Select Materials Processing and click Start.
ANSYS Polyflow has traditionally been used for high viscous flow modeling. This new workflow integrates Fluent GUI with Polyflow as the solver, providing a wizard to assist in setting up various analyses such as extrusion, multilayer molding, press forming, blow molding, thermoforming, and film casting.
Setup Process
1. Mesh Import
First, read in your mesh, which can be in Fluent or Polyflow format. Note that mesh types are limited to:
- 2D: Triangle and Quadrilateral
- 3D: Tetrahedron, Pyramid, Triangular Prism, and Hexahedron
Once the mesh is imported, inspect it to ensure it is satisfactory before proceeding.
2. Material Definition
Define the material properties:
- Density: 900 amperes, 50 kilograms per meter cube
- Viscosity: Constant value (simple material)
3. Cell Zones Definition
Define two zones:
- Die
- Extrudate (allowed to deform)
Both zones are of type Material One.
4. Boundary Conditions
Set up the boundary conditions:
- Inlet: Mass flow type with a specified rate
- Outlet: Outflow type with a uniform reference gauge pressure
- Walls: Define as needed
- Free Surface: Allowed to deform under extrusion
- Symmetry Surfaces: Define as needed
- Boundary Surface: Define as needed
Note: Surface names are pre-selected during the meshing process. Selecting a surface will highlight it in orange for easy identification.
5. Mesh Deformation
Define the deformation of the mesh:
- Type: Extrudate
- Select the deform zone and its two bounding sides
Executing the Solution
- Save the session by navigating to File > Session and naming your model.
- Expand the solution branch and run the calculation by clicking Calculate.
During execution, two additional tabs will appear, allowing you to monitor the solution's progress and convergence.
Analyzing Results
1. Contours
To visualize the pressure field:
- Expand the Graphics section.
- Click on Contours and define a new contour for the pressure field.
- Select all surfaces and hit Display to view the graphics.
2. Flow Vectors
To examine the flow development:
- Select Vector and choose Velocities.
- Field: Normal velocities
- Select all surfaces for display
3. Path Lines
To visualize the flow field:
- Create a new path line and color it by velocities.
- Release particles from the inlet and hit Display.
Thank you for your attention, and have a good day.
Welcome to our 10-minute demonstration on "Material Processing Workspace in Ansys Fluent" for High Viscous Flow Modeling. We are going to kick off our Fluent Launcher. We're going to select Materials Processing and hit Start.
ANSYS Polyflow has been the traditional software for high viscous flow modeling. This new workflow is defined with Fluent GUI and uses Polyflow as solver.
A wizard is used to guide the user for easy setup for extrusion, multilayer molding, press forming, blow molding, thermoforming, and film casting analysis. This particular example is of a simple direct extrusion modeling case. We are going to start top-down and complete our setup.
So let's first read in our mesh. And this mesh could be in Fluent or Polyflow format. However, a word of advice: the mesh types are limited to triangle and quadrilateral in 2D and tetrahedron, pyramid, triangular, prism, and hexahedron in 3D. Now that we have our mesh, let's look at it.
And it seems good. We can move on to the next step where we're going to define our material. So our material is a simple one. It has a density of 900 amperes (incorrect unit, should be kg/m^3), 50 kilograms per meter cube.
And again, as a simple material, we're going to use a constant viscosity value. And there are many more options for viscosity, but we're going to stick to the simple material. Next step is definition of the cell zones. So we have two zones, the die and extrudate, which is allowed to deform.
And they are both of type material one. Next step is setting up the boundary conditions. We're going to start with the inlet. And we're going to define the boundary conditions. And we're going to define the boundary conditions. And we're going to define the boundary conditions.
And we're going to define the boundary conditions. And our surface names are carefully selected for us during the meshing process. And our surface names are carefully selected for us during the meshing process. Our flow specifications are of mass flow type with this given rate.
Next is the specification of the outlet. And this is of type outflow. Which has a uniform reference pressure value of gauge pressure. Now let's define our walls. Next zone is our free surface, which is allowed to deform under the extrusion process.
Next zone is our free surface, which is allowed to deform under the extrusion process. And please note that when we select the surface, it turns orange. So you can identify it and pick the correct one. So you can identify it and pick the correct one. And this also requires a neighboring fixed part.
And this also requires a neighboring fixed part. Final sets of boundary conditions are the symmetry surfaces. Final sets of boundary conditions are the symmetry surfaces. And finally, a boundary surface. Next on our list is the definition of the deformation of the mesh.
So we hit new and it's going to be the type of extrudate. And we need to pick the deform zone. And it's two bounding sides. Now that the setup is complete, if we like, we may save our session by hitting file, then session, and then giving a name for our new model.
Next step is to execute the solution. So we're moving down the branch. We'll expand the solution. And what we want to do is run the calculation. Okay. So let's hit calculate. And this is going to start execution of the run. And as you can see, two more tabs open up in this region.
If we look under transcript, we can see the solution as it progresses. As I mentioned before, Polyflow here is the solver, not fluid. And we can conversely look at the plots where we can track the convergence monitors. And now the solution is complete.
Let's take a look at what type of results we can look at. I'm going to expand under graphics. I'm going to click on contours. Define a new contour. I would like to look at the pressure field. And I would like to look at all the surfaces. And when we hit display, the graphics is going to come up.
But it's going to come up under the graphics tab. So with our mouse, let's reposition the domain. And here we can see that the fixed regions are highly pressurized. And we can see the deformed part. Another way to look at the solution is looking at the flow vectors.
To see how the flow is developing. So we pick vector. We're going to look at velocities. Our field is going to be normal velocities. And let's pick all the surfaces for display. And this shows how the velocity field is. And we're going to look at the flow field.
Yet another way to look at is path lines. We can visualize the flow field using path lines. So let's do a new path line. We're going to color them by velocities. And let's release the particles from the inlet. So let's hit display. And look at how the flow behavior is.
Thanks for your attention and have a good day.
