This course focuses on essential Rocky DEM models and includes five hands on workshops. Particle shape representations, motion frames, and postprocessing will be discussed. Students will become proficient with the Rocky interface throughout the course with workshops that build on one another and expose progressively more advanced features.
Students are encouraged to be ready to discuss areas of Rocky application at their own companies.
This workshop introduces the Rocky interface and explores the use of conveyors with continuous particle inlets.
Workshop 1: Transfer Chute
Workshop 1: Transfer Chute
This workshop explores adhesion modeling, the volume fill approach for adding particles to a model and describes a common test model used to calibrate material data.
Workshop 2: Static Angle of Repose Test
Workshop 2: Static Angle of Repose Test
This workshop explores adhesion modeling, the volume fill approach for adding particles to a model and describes a common test model used to calibrate material data.
Workshop 3: Vibrating Screen
Workshop 3: Vibrating Screen
This workshop explains the use of motion frames in the context of oscillating motion. Particle size distribution definition is also discussed.
Workshop 4: SAG Mill
Workshop 4: SAG Mill
Surface wear and periodic boundaries are used in this workshop to demonstrate the behavior of a mill.
Workshop 5: Drop Weight Test
Workshop 5: Drop Weight Test
Freebody motion of boundaries as well as the Ab-T10 breakage model are highlighted in the final workshop of the course.
This course provides an introduction to conducting computational fluid dynamic simulations in Ansys CFX.
The course focuses on use of the DesignModeler and/or SpaceClaim to prepare CFD models for meshing within the Ansys Workbench meshing environment, and then pre and postprocessing with Ansys CFX.Â
The course devotes very little time to CFD theory and focuses on the use of the software through workshops to solve practical problems. Analysis types included in the course are generally turbulent with various functionality highlighted for each one – multiphase flow, conjugate heat transfer and fluid-structure interaction with Ansys FEA, or moving boundaries, for example.
Most workshops use neutral geometry in the form of SAT or Parasolid files for starting points. DRD encourages the students to bring a SAT or Parasolid file with them to the training (preferably a model from their workplace) for a little testing and discussion of their own problems to solve. Although most exercises will use either a SAT or Parasolid file, DRD will also demonstrate the integration between Ansys and CAD systems including associativity.
Chapter 1 - Overview of Workbench, DesignModeler, and Domain Extraction
Workshop 1a – Orientation of Workbench Interface and Sketching
In this workshop we introduce the Ansys Workbench environment and sketching in DesignModeler and/or SpaceClaim. A small model is created from scratch so the users gain some experience with the user interface.
Workshop 1b – Extraction of Fluid Domain
In this workshop we introduce the use of DesignModeler and SpaceClaim and the methods of creating a fluid domain from previously provided structural geometry.
Chapter 2 - Meshing a Fluid Domain for CFD Solutions
Workshop 2a – Element Types and Physical Behavior
This workshop demonstrates how to control creation of lower order versus higher order elements and tetrahedron versus brick elements in Mechanical. It also provides students the opportunity to compare solution accuracy and computational resources for models with lower and higher elements using the Mechanical solution information object.
Workshop 2b – Creating and Combining Multiple Domain Meshes
This workshop creates both a swept hexagonal mesh with boundary layer and a nonuniform tetrahedral mesh and combines them into a single domain for solving.
Workshop 2c – Multizone Meshing
This workshop uses the multizone mesher to produe a hex dominant mesh and hexacore mesh with and without inflation layers.
Chapter 3 - Overview of Single Phase CFD Analysis with Introduction to Fluid-Structure Interaction
Workshop 3 – Stress Analysis of a Pump Fluid End Using Direct and Iterative Solvers
This workshop demonstrates how to conduct a simple flow analysis in CFX and transfer the pressure boundary conditions to Mechanical for subsequent FEA analysis. Relative flow rates between the inlets are also examined.
Chapter 4 - Conjugate Heat Transfer
Workshop 4 – Conjugate Heat Transfer Simulation of Cooling Fin
This workshop covers the creation of a conjugate heat transfer model between two different fluid domains and a tube with heat fins. Downstream flow temperatures and heat transfer coefficients for the fins are calculated.
Chapter 5 - Turbulence
Workshop 5 – Model Simplification and Flow through a Serpentine Cavity
A serpentine cavity is extracted from a solid model, meshed with a boundary layer and the pressure drop across the model is found.
Chapter 6 - Multiphase Flow
Workshop 6 – Multiphase Flow in Sand Mixing Tank
For this workshop the fluid domain is extracted from a tank and then various sand and water flows are applied to the inlets of the tank. Initial locations of erosion is predicted along with the rate of erosion on the tank walls.
Chapter 7 - Transient Simulations and Thermal Analysis
Workshop 7 – Transient Thermal Analysis of an Electronics Package
For this workshop the fluid domain is extracted from a full 360 degree solid model. The heat source is surrounded by a circular heat sink to help convect away heat as 50W of energy is applied. The transient heat up is calculated.
Chapter 8 - MultiFrames of Reference, Cavitation
Workshop 8 – Free Surface Flow with Particles in an Open Channel
A fluid domain is extracted from solid geometry for this simulation. The mesh is created and multiphase flow with air and water is defined. In addition, particulates are added to the water and the analysis is solved as transient to examine particle flow.
Chapter 9 - Free Surface Flows
Workshop 9 – Rotating Impeller with Cavitation
The purpose of the tutorial is to model cavitation in a centrifugal pump, which involves the use of a rotation domain and the cavitation model.Â
Chapter 10 - Source Terms and Fan Modeling
Workshop 10 – Modeling Pressure Rise Using a Fan Curve and Filter with Source Terms
This workshop simulates a duct with a fan and filter. The fan is not explicitly modeled but a fan curve is used instead and the filter is modeled as a porous domain.
This course provides an introduction to conducting CFD simulations in Ansys CFD.
The course devotes little time to CFD theory and focuses on practical use of the software through both lectures and workshops that demonstrate practical problems. Workshops build in difficulty throughout the course and develop skills in setup, solving, and postprocessing models in Fluent.
Early workshops create geometry from scratch or import CAD geometry as starting points. This allows students to build skills with meshing and geometry preparation. Latter workshops utilize pre-generated mesh files allowing for more complex problems to be undertaken during class time.
DRD encourages the students to be ready to discuss their application for Fluent with the instructor so that we can best tailor the training to each student.
DRD conducts this course over two days. Students will receive all training materials to take home and reference later.
Chapter 1 – SpaceClaim User Interface, Basic Operations, and Creating Geometry
Workshop 1.1 – SpaceClaim Basics
In this workshop we introduce Ansys SpaceClaim and use it to extract a fluid volume from a mixing tee.
Workshop 1.2 – Geometry Repair using SpaceClaim
This workshop introduces the use of automated repair tools in SpaceClaim.
Workshop 1.3 – Creating a Mixing Tee from Scratch
This workshop demonstrates creating geometry from Scratch in SpaceClaim.
Workshop 1.4 – Creating Named Selections and Bodies of Influence in SpaceClaim
This workshop introduces creation of named selections and bodies of influence. Shared topology considerations for bodies of influence are also discussed.
Chapter 2 – CFD Overview
Workshop 2 – Mixing Hot and Cold Streams in a Mixing Tee
This workshop covers the creation of a model in which two air streams at different temperatures are mixed together. The mixing uniformity is analyzed.
Chapter 3 – Watertight Geometry Workflow Overview and Surface Meshing
Workshop 3 – Meshing of a Static Mixing Device
This workshop demonstrates meshing a solid geometry using capping within the Fluent Meshing Watertight Workflow.
Chapter 4 – Geometry Description and Volume Meshing
Workshop 4 – Meshing of a PCB and Heatsink
This workshop covers meshing of a heat producing electrical component on a circuit board. The board, component, heatsink, and surrounding air are meshed in preparation for solving.
Chapter 5 – Solution Mode User Interface
Workshop 5 – Flow Distribution in an Air Manifold
This workshop demonstrates how to conduct a simple flow analysis in Fluent. Relative flow rates between the outlets are also examined.
Chapter 6 – Physics Tab
Workshop 6 – Meshing and Solving Using Zero Thickness Baffles
A duct with turning vanes is meshed in Fluent Meshing and solved. Proper meshing of zero thickness baffles is demonstrated.
Chapter 7 – Results Tab
Workshop 7 – Flow Over Heated Obstacles
This workshop introduces heat transfer via wall boundary conditions and utilizes symmetry to speed up computation of the solution.
Chapter 8 – Solution Tab
Workshop 8 – Solver Options and Settings
The mixing tee model is reexamined using various solver settings to see how they affect convergence behavior and result quantities.
Chapter 9 – Best Practices
Workshop 9 – Turbulent Flow Past a Backward Facing Step
Flow separation on a backward facing step is analyzed. The effect of including an accurate inlet velocity profile is also explored.
Chapter 10 – Turbulence
Workshop 10 – Electronics Cooling with Natural Convection and Radiation
This workshop covers the conjugate heat transfer analysis of a heated chip and heatsink undergoing natural convection. Surface-to-surface radiation is also examined.
This course provides an introduction to meshing models for Fluent using Workbench Meshing. Fluent Meshing is the preferred tool for the majority of models as it will be able to provide the most efficient meshes on the most complex geometry with the least amount of model prep. However, there are unique scenarios where Workbench Meshing can be used to provide highly sculpted meshes to meet demanding requirements, such as non-Cartesian aligned hexahedral elements (cyclones) or layered elements for modelling 1DOF motion (moving valves). Pure hexahedral and hybrid hexahedral/tetrahedral meshes can provide significant benefits in solution speed and accuracy over unstructured polyhedral or tetrahedral meshes in these scenarios.
Students will focus on completing workshops that build in difficulty throughout the course. Key skills related to fluid volume creation, decomposing geometry in SpaceClaim, and setup of mesh controls in Workbench Meshing will be discussed and practiced.
DRD’s Introduction to Ansys Fluent course is a prerequisite to this course.
This workshop introduces the basics of geometry preparation for Workbench Meshing along with general purpose tetrahedral meshing with inflation.
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Workshop 2 – Ball Valve
This workshop introduces swept hexahedral meshing alongside the concept of multibody parts that allow for conformal meshes with different element shapes.Â
Workshop 3 – Mixing Tank
This workshop presents slicing strategies to maximize hexahedral elements in cylindrically dominated geometry as well as utilizing selective non-conformal meshing.
Workshop 3 – Solenoid Valve
This workshop demonstrates recommended meshing strategies for motions containing single degree of freedom motion, including slicing, selectively shared topology, named selection management, and meshing order.
