MESHING WORKSHOP - Ozen Engineering and ANSYS

116 Pages·2014·9.69 MB·English

by  Metin Ozen

MESHING WORKSHOP
Thursday, November 13th, 2014
Metin Ozen, Ph.D., ASME Fellow
OZEN ENGINEERING, INC.
www.ozeninc.com
WHAT DO WE DO?
• Ozen Engineering, Inc. helps solve challenging and multidisciplinary engineering problems with
industry leading computational simulation technologies
• We provide advanced
• Multi-Physics FEA
• Computational Fluid Dynamics (CFD) simulations

INTRODUCTION TO ANSYS MESHING
• In this lecture we will learn:
– Process for pre-processing using ANSYS tools
– What is the ANSYS Meshing?
– Meshing Fundamentals
– How to launch ANSYS Meshing?
– ANSYS Meshing interface
– Geometry concepts
– Meshing methods
PREPROCESSING WORKFLOW
Import/
Geometry
Geometry Meshing Solver
Modifications
Creation
Sketches and
3D Operations Meshing Methods
Planes
Hybrid Mesh: Tet,
Booleans,
3D Operations Prisms, Pyramids
Decompose, etc.
Extrude, Revolve, Hexa Dominant,
Sweep, etc Geometry Sweep meshing
Cleanup and
Assembly
Geometry Import Repair
Meshing
Options
Automatic
Global Mesh
Cleanup
Bi-Directional
Settings
CAD/ Neutral
Simplification,
Local Mesh
Mid-surface,
Fluid Extraction Settings
Sizing, Controls,
etc.
WHAT IS ANSYS MESHING
• ANSYS Meshing is a component of ANSYS Workbench
– Meshing platform
– Combines and builds on strengths of preprocessing offerings from ANSYS:
• ICEM CFD, TGRID (Fluent Meshing), CFX-Mesh, Gambit
• Able to adapt and create Meshes for different Physics and Solvers
– CFD: Fluent, CFX and POLYFLOW
– Mechanical: Explicit dynamics, Implicit
– Electromagnetic
• Integrates directly with other WB systems
MESHING FUNDAMENTALS
• Purpose of the Mesh
– Equations are solved at cell/nodal locations
• Domain is required to be divided into discrete cells
(meshed)
• Mesh Requirements
– Efficiency & Accuracy
• Refine (smaller cells) for high solution gradients and
fine geometric detail.
• Coarse mesh (larger cells) elsewhere.
– Quality
• Solution accuracy & stability deteriorates as mesh
cells deviate from ideal shape
MESHING PROCESS IN ANSYS MESHING
• Physics, Sizing, Inflation, Pinch,
…
• Sizing, Refine, Pinch, Inflation,
…
• Preview surface mesh,
Inflation
• Mesh metrics, Charts
LAUNCHING ANSYS MESHING
– ANSYS Meshing is launched within Workbench
• 2 ways :
From Analysis Systems From Component Systems
Fluid Flow (Fluent), Fluid Flow (CFX), Mesh
Double click
Mesh in the
System
or right click
and select
Edit
GRAPHICS USER INTERFACE
Toolbars
Outline Graphicswindow
Worksheet
Detailsview
Manage views
MeshMetrics
Section Planes
Message window
EntityDetailsBar UnitsBar