The templates solve flow problems in the three main applications of Polyflow: blow
molding, extrusion, and thermoforming. For your convenience, the templates are
grouped by application in subdirectories (named after the application) under the
Templates directory. Note that the blow molding and
thermoforming problems require a Polyflow license or a license for the blow molding
application-specific version of Polyflow, while the extrusion problems require a
Polyflow license or a license for the extrusion application-specific version of
Polyflow.
To choose an appropriate template, find the closest match to your problem in the following tables. You can find additional information in the HTML file provided in the template directory.
Table 2.2:
Blow_Molding Template
| Template Name | Description |
|---|---|
01_BlowMoulding_35cm
| An isothermal blow molding process of a middle-sized object, with dimensions on the order of 30 cm. |
Table 2.3:
Extrusion Blow Molding Templates
| Template Name | Description |
|---|---|
01_EBM_30cm
| An isothermal blow molding process of a medium-sized object, whose typical dimension is of the order of 30 cm. The geometric model is based on shell representation for both the polymer parison and the molds. The constitutive material has a constant viscosity. |
02_EBM_30cm_and_structural
| An isothermal blow molding process of a medium-sized object, whose typical dimension is of the order of 30 cm. The geometric model is based on a shell representation for both the polymer parison and the molds. The constitutive material has a constant viscosity. The blow molding step is followed by a top load simulation in which deformations and stresses are computed to assess the quality of the blown part. |
Table 2.4:
Extrusion Templates
| Template Name | Description |
|---|---|
1_Die_InletWallOutlet
| A 3D flow in a die, with an inlet, an outlet, and a zero velocity condition applied to a wall. |
2_Die_InletSlipWallOutlet
| A 3D flow in a die, with an inlet, an outlet, and a slip condition applied to a wall. |
3_Die_InletWallSymOutlet
| A 3D flow in a die, with an inlet, a plane of symmetry, an outlet, and a zero velocity condition applied to a wall. |
4_Die_InletSlipWallSymOutlet
| A 3D flow in a die, with an inlet, a plane of symmetry, an outlet, and a slip condition applied to a wall. |
5_Direct_InletWallFreeJetOutlet
| A 3D flow in a die and free jet, with an inlet, a free surface, an outlet, and a zero velocity condition applied to a wall. |
6_Direct_InletSlipWallFreeJetOutlet
| A 3D flow in a die and free jet, with an inlet, a free surface, an outlet, and a slip condition applied to a wall. |
7_Inverse_InletWallFreeJetOutlet
| A die design for a flow with an inlet, a wall, a free surface, and an outlet. |
8_Inverse_InletSlipWallFreeJetOutlet
| A die design for a flow with an inlet, a free surface, an outlet, and a slip condition applied to a wall. |
Table 2.5:
Injection Stretch Blow Molding Template
| Template Name | Description |
|---|---|
01_ISBM_30cm
| An isothermal stretch blow molding process of a middle-sized object, whose typical dimension is of the order of 0.3 m. The geometric model is based on a shell representation for the polymer preform, as well as for the mold and the rod. The constitutive material has a constant viscosity. |
Table 2.6:
Fit Material Data Template
| Template Name | Description |
|---|---|
Bird_Carreau_Viscosity_Asymptotic_Slip
| A template designed to fit the material parameters of a Bird-Carreau viscosity law and the asymptotic slip law, optimizing the pressure drops and the swellings measured on four dies (a cylindrical capillary including a converging section, a rectangle parallel die, a rhombus parallel die and a square parallel die). |
Table 2.7:
Plug Assisted Thermoforming Template
| Template Name | Description |
|---|---|
01_PlugAsTher_005m_0sym
| An isothermal stretch blow molding process of a middle-sized object, whose typical dimension is of the order of 0.3 m. The geometric model is based on a shell representation for the polymer preform, as well as for the mold and the rod. The constitutive material has a constant viscosity. |
02_PlugAsTher_005m_1sym
| An isothermal plug-assisted thermoforming process of a small-sized object, whose typical dimension is of the order of 0.05 m. It is assumed that the object involves one plane of symmetry perpendicular to the X-axis. The geometric model is based on a shell representation for the polymer sheet as well as the mold and the plug. The constitutive material is a constant viscosity |
02_PlugAsTher_005m_2sym
| An isothermal plug-assisted thermoforming process of a small-sized object, whose typical dimension is of the order of 0.05 m. It is assumed that the object involves two planes of symmetry, respectively perpendicular to the X and the Y-axis. The geometric model is based on a shell representation for the polymer sheet as well as the mold and the plug. The constitutive material is a constant viscosity |
Table 2.8:
Single Screw Extruder Template
| Template Name | Description |
|---|---|
01_SSE_isoth
| An isothermal flow of a Generalized Newtonian fluid in a Single Screw Extruder (SSE). The rheology of the fluid is described with a Bird-Carreau law. An inlet volumetric flow rate is specified. The flow is intrinsically transient. However; since the device involves a single screw, the transient flow in an inertial reference frame is converted into a steady flow in a rotating reference frame. Hence, instead of assigning an angular velocity to the screw, an angular velocity is assigned to the wall. |
Table 2.9:
Thermoforming Templates
| Template Name | Description |
|---|---|
01_Thermoforming_1cm
| An isothermal thermoforming process of a small object, whose typical dimension is on the order of a centimeter. The geometric model is based on a shell representation for both the polymer sheet and the mold. The constitutive material has a constant viscosity. |
02_Thermoforming_10cm
| An isothermal thermoforming process of a small object whose typical dimension is on the order of 10 centimeters. The geometric model is based on a shell representation for both the polymer sheet and the mold. The constitutive material has a constant viscosity. |
03_Thermoforming_1m
| An isothermal thermoforming process of a small object, whose typical dimension is on the order of a meter. The geometric model is based on a shell representation for both the polymer sheet and the mold. The constitutive material has a constant viscosity. |
Table 2.10:
Twin Screw Extruder Template
| Template Name | Description |
|---|---|
01_TSE_isoth
| An isothermal flow of a Generalized Newtonian fluid in a Twin Screw Extruder (TSE). The rheology of the fluid is described with a Bird-Carreau law. Zero forces are specified at both inlet and outlet. The flow is intrinsically transient, and must be solved in an inertial reference frame. However; a steady calculation can be considered if one wants to get an instantaneous picture of the flow. |