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Fluid mechanics
Fluid mechanics
Scalability of simulations

Generating High-Quality CFD Meshes Using ICEM CFD Hexa

Overview

Training Expert

High quality hexahedral meshing is no longer sorcery – welcome to Ansys ICEMCFD, the tool for generating meshes with assured accuracy This training is offered as a 2-day course.

Duration
2 days

Prerequisites
None

Software used
Ansys CFD

Benefits
  • Understanding the quality requirement and application of hexahedral computational meshes
  • Work on the practical use of the Ansys ICEM CFD Hexa
  • Build a simulation process from geometry import to calculation
  • You can further improve the quality of your CFD results

Description

The efficient and high-quality meshing of geometry models has a major impact on the result quality of CFD calculations. Various element types can be used for meshing. With tetrahedra and general polyhedra, high degrees of automation can be achieved. But these element types become less efficient when thin shear layers in the proximity of the wall, for example, or thin gaps necessitated by the geometry (in turbomachines), have to be meshed. For such applications, the use of hexahedra is advisable. However, generating hexahedral computational mesh can only be automated to a limited extent and requires manual and cognitive input. The leading software for hexahedral meshing is Ansys ICEM CFD Hexa.

This training demonstrates the use and handling for two-dimensional and three-dimensional applications, from the import of CAD models to the input and computation in Ansys CFX and Fluent. Special topics such as generating cyclical, periodical computational meshes will also be discussed. You will know what to look out for when generating meshes and therefore be able to improve the quality of your CFD results. The seminar is aimed at development and simulation engineers as well as researchers whose work involves high accuracy requirements for their CFD simulations. You will develop a simulation process from geometry model to calculation.

Detailed agenda for this 2-day training

Day 1

01 Requirements of computational meshes and areas of application for hexahedral meshes

  • Quality criteria
  • Resolving shear layers
  • Interaction with turbulence models
  • Advantages and disadvantages of different element types
  • Areas of application of hexahedral computational meshes

02 Introduction to and use of Ansys ICEM CFD Hexa – two-dimensional nozzle geometry

  • Principle of Ansys ICEM CFD Hexa – “sculptor” instead of “bricklayer”
  • Geometry import
  • Defining boundary condition areas
  • Designing and inputting block structures (“blocking”)
  • Projecting the block structure onto the geometry
  • Node distribution at edges
  • Mesh generation and quality control
  • Exporting to Ansys CFD solvers
  • Importing into Ansys CFD solver and taking the example into account

03 Meshing of a three-dimensional cooling duct geometry – part 1

  • Geometry import
  • Defining boundary condition areas
  • Designing and inputting block structures (“blocking”)
  • Projecting the block structure onto the geometry

04 Meshing of a three-dimensional cooling duct geometry – part 2

  • Node distribution at edges
  • Mesh generation and quality control
  • Exporting to Ansys CFD solvers
  • Importing into Ansys CFD solver and taking the example into account

Day 2

05 Meshing of a three-dimensional T-shape geometry – part 1

  • Geometry import
  • Defining boundary condition areas
  • Designing and inputting block structures (“blocking”)
  • Using O grid structures
  • Projecting the block structure onto the geometry

06 Meshing of a three-dimensional T-shape geometry – part 2

  • Node distribution at edges
  • Mesh generation and quality control
  • Optimizing computational meshes
  • Exporting to Ansys CFD solvers
  • Importing into Ansys CFD solver and taking the example into account

07 Meshing of three-dimensional cyclic geometries: turbine blades – part 1

  • Geometry import
  • Defining boundary condition areas
  • Designing and inputting block structures (“blocking”)
  • Defining periodic edges

08 Meshing of three-dimensional cyclic geometries: turbine blades – part 2

  • Node distribution at edges
  • Mesh generation and quality control
  • Optimizing computational meshes
  • Exporting to Ansys CFD solvers
  • Importing into Ansys CFD solver and taking the example into account

Your Trainers

Thorsten Hansen
CFD simulation expert, ISimQ
Adrian Dunne
Simulation Engineer, CADFEM Ireland Ltd.

Placement in the CADFEM Learning Pathway

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Straight after you sign up, an automatic confirmation of receipt will be sent to the email addresses you provided. Once you have successfully verified the data you provided, you will receive your personalized sign-up confirmation, containing further information on course fees, the billing address, etc., by email within two to three working days.  

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Head of Support & Training