Remi Duquette of MAYA HTT presented at Siemens PLM Connection Europe 2008 on the advantages synchronous technology in NX provides CAE users.

1. Create CAD-associative Fluid
Domains Within Complex
Assemblies
Remi Duquette, Director
MAYA Heat Transfer Technologies Ltd.
remi.duquette@mayahtt.com
www.mayahtt.com

3. NX powered by Synchronous Technology
Revolutionary Toolset for the CAE Users
Provides an intuitive and direct approach to design… it is
simple, fast, and reliable
Adds a new History‐Free mode
– Market leading functionality
– Increased capacity for “what if” design studies, especially in
the context of CAE workflows
Super Easy CAD changes – with minimal learning curve
Fluid domain generation workflow breakthrough for CFD
analysis with NX Flow or NX Electronic Systems Cooling
Best set of design tools
– Powerful tool for CAE and Manufacturing Engineers
– Works equally well on imported and native geometry
– Frees you from the limitations of traditional history based
modelers
– Preserves your investment in history based modeling
– Users choose best approach to get the job done
This is the revolution in CAD/CAE workflows you were waiting for!
Slide 3

4. Introduction to Synchronous Technology
History‐Free, Feature‐Based Modeling
– Simultaneously synchronizes geometry and rules
through a new decision‐making inference engine
Accelerates innovation in four key areas
– Design intent capture
– Design changes
• Especially for CAE/CAM users
– Multi‐CAD data re‐use
– Ease of use
• Especially for CAE/CAM users
Slide 4

5. Need to make important “what if” CAD changes?
Leverage NX powered by Synchronous Technology
If CAD geometry has features, you
can modify the model in it’s
current state without regard for
how the model was constructed
(ie you don’t need to know any of
the CAD geometry dependencies)
If CAD geometry has no features
(“dumb” imported geometry), you
“What if” scenario for CAE specialist
can edit the geometry directly
Slide 5

6. NX powered by Synchronous Technology
Modification of the model in it’s current state without regard for how
the model was constructed…that is what the CAE user needs!
Intent is what you intend to do now
Slide 6

7. Active & Smart Selection
Simply select a hole
face and start point…
two clicks … and edit
the dimension
The model is updated as Active Selection
expected, and the geometric automatically recognizes
relationships are maintained geometric relationships …
coaxial, concentric, and
tangent in this case
Slide 7

8. Scrapbook Modeling
Re‐use portions of models without having to
manually segregate and remove parameters,
or export and import
Functional design change with or without features
Copy and paste geometry between files
– Cut Face – detach face set and heal wound
– Copy Face – copy to buffer for reuse
– Paste Face – attach buffer
– Intelligent “add” and “subtract” attributes
on buffer for subsequent paste
– Intelligent extension of buffer faces and target
faces
Slide 8

10. Synchronous Technology for Fluid
Domain Creation
Revolutionary Toolset for the NX Flow &
NX Electronic Systems Cooling Users
Most electronic systems cooling problems and many
CFD problems require generation of the 3D
geometry representing the fluid domain
Once the 3D fluid domain geometry created, the
automatic fluid domain mesher can be used:
Driven from the 3D geometry
Detects internal flow blockage geometry
Automatically meshed with tetrahedral, wedge, and
pyramid elements
Is usually bounded by walls, vents, and/or fans, and
other openings
Creates a boundary layer mesh at walls where needed
Synchronous Technology generates the fluid domain
geometry required…
Delete Face removes unwanted external surfaces
Seals up holes, vents, and/or fan openings with
little/no user intervention
Automatically creates continuous 3D geometry for the
fluid domain!
Slide 10

11. Synchronous Technology for
Fluid Domain Creation
Example: Air Intake Manifold
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id dom
c t flu
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Slide 11

12. Synchronous Technology for Fluid Domain
Creation
Example: Air Intake Manifold – Demo
Slide 12

13. Synchronous Technology for
Fluid Domain Creation
Air Intake Manifold – Temperature mapping Results
NX Nastran – Mapped Temperature NX Flow / NX Thermal
Boundary Condition Solid Temperature Results
Slide 13

14. Synchronous Technology for
Fluid Domain Creation
Example: Thermal Imaging Camera
Perfect fluid domain in 12 clicks
Slide 14

15. y gy
Domain Creation
Example: Thermal Imaging Camera –
Demo
Slide 15

16. Synchronous Technology for
Fluid Domain Creation
Thermal Imaging Camera –
Air Streamlines & Temperature Results
Slide 16

17. Synchronous Technology for
Fluid Domain Creation
Example: Industrial Blower
Perfect fluid domain in ~12 clicks
(including RFR partition)
Slide 17

18. Synchronous Technology for Fluid Domain
Creation
Example: Industrial Blower – Demo
Slide 18

19. Synchronous Technology for
Fluid Domain Creation
Industrial Blower – Air Streamlines Results
Slide 19

20. Synchronous Technology for
Fluid Domain Creation
Example: Automotive Fuse Box
Perfect fluid domain in 5 clicks
Slide 20

21. Synchronous Technology for Fluid
Domain Creation
Example: Automotive Fuse Box – Demo
Slide 21

22. Synchronous Technology for
Fluid Domain Creation
Automotive Fuse Box –
Air Streamlines & Temperature Results
Slide 22

23. Other Fluid Domain Creation Techniques
1. Fill it with Cuboids (Space Finder Method…)
2. Assembly Wrapping Technique
3. Extract Faces & Patch Holes
4. Manual technique: create a large block and carve out
the fluid domain by multiple boolean operations and
extrude/cut operations
Slide 23

24. [1] Fill it with Cuboids (Space Finder…)
This technique is typically used for quick conceptual CFD simulations. The “stepped” fluid domain geometry
created is a crude approximation and is unreliable for curved shapes (unless you use extremely small cubes and/or
take the time to locally refine your mesh…local small cubes tend to lead to very long CFD solve time unnecessarily)
Slide 24

25. [2] Assembly Wrapping Technique
Slide 25

26. [3] Extract Faces & Patch Holes
Slide 26

27. For more information, please contact us:
info@mayahtt.com
www.mayahtt.com
Remi Duquette, Director
remi.duquette@mayahtt.com
MAYA Heat Transfer Technologies Ltd.