pointwise, a mesh generation tool for openfoam · cfd formats flexibility. pointwise intro...
TRANSCRIPT
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Pointwise, a mesh generation tool for OpenFOAM
HPC enabling of OpenFOAM for CFD applicationCINECA, 26th-28th November 2012
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Your Presenter: Porto Ricerca
Our principal activity is in the CFD sector, mainly for external fluid-dynamics.
We provide:– Consulting– Softwares
Your Presenter
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Your Presenter
Complete set of softwares- panel code- Euler code- RANS- 2D (Mses) and 3D
CFD consulting: Aeronautics
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CFD consulting: Aeronautics
Your Presenter
Additional Modules:- flight dynamics integration- ice collection efficiency- rotor
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CFD consulting: Aeronautics
Your Presenter
Collaborations with Universities
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CFD consulting: Marine sector
Your Presenter
•Free Surface •Un-steady analysis (sea-keeping)
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CFD consulting: Marine sector
Your Presenter
Optimization
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CFD consulting: Marine sector
Your Presenter
Optimization
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CFD consulting: Automotive
Your Presenter
External fluid-dynamics
Heat exchanger
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Softwares
Your Presenter
Analytical Methods
Pointwise
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Pointwise Intro
Mesh generation for computational fluid dynamics (CFD)- Gridgen- Pointwise
Qualityand
Flexibility
Pointwise Introduction
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Pointwise Intro
High levels of automation
Intimate levels of control (mesh metrics)
Quality
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Pointwise Intro
Hexahedral meshing- elliptic PDE methods for smoothness, clustering and orthogonality control- hyperbolic PDE and algebraic extrusion methods
Unstructured and hybrid meshing- T-Rex (anisotropic tetrahedral extrusion) for extruding regular layers of high-quality tetrahedra- classic hybrid meshing via extrusion- mixed hex-tet meshes
Quality
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Pointwise Intro
QualityJacobian Length I Ratio Equiarea Skewness
Volume Length J Ratio Equivolume Skewness
Component Volume Length K Ratio Centroid Skewness
Area Aspect ratio Wall Spacing
Length Smoothness I Wall Orthogonality
Length I Smoothness J Database associativity
Length J Smoothness K Boundary Proximity
Length K Minimum Included Angle Surface Procximity
Volume Ratio Maximum Included Angle
Area Ratio Equiangle Skewness
Available Metrics
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Pointwise Intro
Import CAD data from native and standard formats
Export grid and boundary conditions to open-source, commercial and standard CFD formats
Flexibility
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Pointwise Intro
FlexibilityAcuSolve Exodus II OpenFOAM TASCflow
ADPAC FALCON Overflow TEAM
ANSYS CFX FANS PATRAN Tecplot
ANSYS FLUENT FDNS/UNIC PHOENICS TETREX
CFD++ FieldView PLOT3D UCD
CFDShip-Iowa FrontFlow SCRYU UGRID
CFL3D GASP SCRYU/Tetra VRML
CGNS INCA Splitflow USM3D
CNSFV INCA V2 STAR-CCM+ VSAERO
Cobalt NASTRAN STAR-CD WIND
COMO NCC STL WIND-US
CRUNCH NPARC TACOMA XPATCH
DTNS
CFD and CAE formats supported
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Pointwise Intro
Tcl-based scripting language
Journaling and playback
Glyph
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T-REX
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T-RexOpen File and Select Solver: OpenFOAM
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T-RexSelect domains: Create Block
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T-RexPopulate Block: Grid, T-Rex
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T-RexT-Rex primary settings
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T-RexT-Rex: Push Attributes
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T-RexSet Boundary Conditions for T-Rex grid
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T-RexSolve: Initialize
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T-RexMatch and Push Attributes for 'In and Out'
T-Rex grid
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T-RexExamine: Max Included Angle on Y=0 cut
T-Rex grid
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T-RexRefine grid: introduce new domain
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T-RexAdd face to block: Save Baffle face
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T-RexT-Rex Boundary Condition for Baffle face
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T-RexSolve, Initialize
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T-RexExamine: Max Included Angle and Histogram
High Max Incl. Angle
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T-Rex
High Skewness
Examine: Max Included Angle and Histogram
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T-RexRefine grid: Advanced and Skew Criteria
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T-RexT-Rex: Advanced Attributes
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T-RexT-Rex: Skew Criteria
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T-RexSolve, Initialize
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T-RexExamine: Max Included Angle and Histogram
Better solution
Lower Max Incl. Angle
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T-RexGrid, Cell Count
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T-RexExport CAE: Combine anisotropic tets
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T-RexCombine anisotropic tets: cells reduction
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Glyph
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Pointwise's Tcl-based scripting language, Glyph, provides customization capabilities
Rather than type scripts entirely by hand you can use journaling
Glyph gives the possibility to:- automate complex grids - reproduce the same grid for similar geometries
(results not mesh depending)- link Pointwise to a Process Integration and Design
Optimization software
Glyph
Glyph
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Glyph
Script file example: text file
Variables declaration
Glyph text file example
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GlyphExecute script
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GlyphScript executed
Database creationDatabase intersectionSurface meshVolume mesh
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GlyphGlyph variables modification
Wing X Root Scale: from 1.20 to 1.70Wing X Root Position: from 0.20 to 2.00Wing X Tip Position: from 2.00 to 1.70
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GlyphScript re-executed
Database creationDatabase intersectionSurface meshVolume mesh
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Thank you for attending.
Porto [email protected]
Pointwisewww.pointwise.com
for more info
more examples athttp://www.pointwise.com/webinar/