1. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future Paul Gauché, Flomerics Inc. 257 Turnpike Road - Suite 100 Southborough, MA 01772 Phone: (508) 357-2012 Fax: (508) 357-2013 Email: paul@flomerics.com

2. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future THE BENEFIT OF MCAD/ECAD INTEGRATION äIntegration or enhanced compatibility with complimentary MCAD and ECAD environments is of prime importance to ensure that thermal analysis can be performed as quickly and efficiently as possible.

3. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future AGENDA äIntroduction äElectronics Cooling CFD using Flotherm äMCAD and ECAD Integration äConclusions

4. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future INTRODUCTION äThermal issues have become a major concern in Electronic design. Increasing power densities Demands on reliability Die Junction temperature limit soon < 100°C äIncreased focus on thermal performance by: Design and analysis Materials, Cooling devices, System placement of parts äTime is always of the essence! Easy to use software Integration and compatibility with complimentary design tools

5. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future INTRODUCTION äThermal analysis requires the following: Enough geometric data to model thermal details Material properties (k, ,c p, ,…) Boundary conditions äGeometric Data enabled by: CAD ability within FLOTHERM MCAD integration via IGES, STL, SAT, (STEP) … ECAD integration via IDF format äFLOTHERM constraints and challenges CFD is very computationally expensive

6. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future CFD - FLOTHERM äFLOTHERM by Flomerics is a computational fluid and heat transfer analysis and design package specifically for the analysis of electronic equipment. äIt makes use of the finite volume method to analyze three- dimensional geometries from chip level to system level. äIt solves the steady-state as well as the transient governing equations. äThe conjugate heat and flow solution is performed using the Boussinesq approximation for buoyancy forces. äTurbulence is modeled with a choice of zero or two equation models.

7. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future CFD - FLOTHERM äThe governing equations are shown here in compact form for conservation of mass, momentum (Navier- Stokes) and energy respectively

8. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future CFD - FLOTHERM äReal physical geometry is discretized into small volumes known as Grid Cells äP, T are calculated at each cell center; u, v, w, are calculated at each cell face Cell Center (node) Cell Face

9. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future CFD - FLOTHERM äGoverning Equations  collectively known as the Navier-Stokes Equations  represent conservation of mass, momentum, and energy  partial differential equations äPartial differential equations replaced by algebraic equations transient + convection - diffusion = source CFD - FVA

10. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future CFD - FLOTHERM äAlgebraic FVA equations solved iteratively äSolution is said to Converge when (default or user- specified) convergence criteria are met äConvergence criteria is based on rigorous satisfaction of conservation equations

11. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future CFD - FLOTHERM

12. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future MCAD INTEGRATION äCompatibility with MCAD environments will continue to be facilitated by the use of neutral file formats such as IGES, STL and most recently STEP in our FLO/MCAD module. The ACIS SAT file format will also continue to be used as FLO/MCAD itself uses ACIS as its solid modeling kernel. äAs we believe that FLOTHERM and other FLOMERICS modules provide a complete electronic thermal analysis suite we do not feel that there is a need to integrate with competitive softwares.

13. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future MCAD INTEGRATION

14. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future äThe next release of FLOTHERM will have the ability to import STEP AP214 and AP203 files. äTesting to date has indicated that the STEP format is extremely robust compared to the IGES format resulting in a very high proportion of files that are accurately imported into FLO/MCAD. äThis is not surprising as STEP itself is a solid model format and so is easily converted into ACIS format on import into FLO/MCAD. MCAD INTEGRATION

15. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future äIt is our intention to provide compatibility with native file formats such as: ProEngineer, CATIA SDRC-IDEAS Unigraphics Solid modeling native file formats such as Parasolid's in the coming releases of FLO/MCAD. MCAD INTEGRATION

16. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future ä"What are the facilitating and/or inhibiting factors that drive your integration plans?" äWe use both the solid modeling kernel and interoperability husks supplied by Spatial technology. These 3rd party software libraries enable the import and healing technologies for the FLO/MCAD product. Flomerics will ensure that the quality of these libraries is of the high standard that users of Flomerics software have come to expect. Unfortunately we do not have direct control of the quality of these libraries though so far this has not proved to be a problem. It is a potential generic problem in incorporating 3 rd party functionality. We do not use any 3rd party software for integration with ECAD environments. MCAD INTEGRATION

17. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future MCAD INTEGRATION äNeutral file formats such as IDF, IGES, STEP etc. have gone a long way to facilitate data integration and compatibility between different software tools. STEP especially is proving to be a great improvement over IGES. äFLO/EDA benefits much from the standardization of IDF, enabling compatibility between all major board layout tools and FLOTHERM. äThe move by ProE and CATIA to use binary encoded native file formats will effect direct compatibility with these MCAD tools. As these tools can and will continue to export STEP and IGES data representations a route to data compatibility is maintained.

18. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future MCAD INTEGRATION äA major inhibiting factor for the integration of MCAD and CFD is the large difference in focus of these tools. äMCAD and ECAD are used in the geometrical or electrical design and layout of hardware whereas CFD is a computationally intensive design analysis tool. äThis implies that a certain amount of simplification is required of detailed MCAD models before the CFD analysis can take place. äFLO/MCAD has built in mechanisms to speed up this process.

19. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future ECAD INTEGRATION äFlomerics utilizes IDF (Intermediate Data Format) as the compatibility format with ECAD board layout type software.

20. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future ECAD INTEGRATION äFLO/EDA integrates: EDA data sources DELPHI techniques as embodied in FLOPACK, and advanced solution techniques (which may or may not include new conduction mode solvers) EDA Data Sources Board Layout Component Data Operating Power Advanced Solvers CFD Radiation Conduction DELPHI Technology 2R Models Full DELPHI Models Validation

21. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future ECAD INTEGRATION

22. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future ECAD INTEGRATION

23. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future CONCLUSIONS äFLOTHERM continues to enhance and improve integration with MCAD and ECAD tools via neutral file formats and other popular formats. äA number of inhibiting factors such as: äDependence on popular formats äDependence on third party tools äFocus of tools sharing data äUsed properly, external sources of data can speed up the thermal analysis part of design in electronics.

24. MCAD and ECAD Integration and Compatibility with FLOTHERM by Flomerics – Current and Future North America (East) Flomerics Inc. 257 Turnpike Road - Suite 100 Southborough MA 01772 Tel: +1 (508) 357-2012 Fax: +1 (508) 357-2013 Email:sales@flomerics.comsales@flomerics.com North America (Central) Flomerics Inc. 1106 Clayton Lane, Suite 525W Austin, TX 78723 Tel: +1 (512) 420 9273 Fax: +1 (512) 420 9485 North America (Northwestern) Flomerics Inc. 4699 Old Ironsides Drive - #390 Santa Clara, CA 95054-1860 Tel: +1 (408) 562-9100 Fax: +1 (408) 562-9101 North America (Southwestern) Flomerics Inc. 2131 Palomar Airport Road, Suite 200 Carlsbad CA 92009 Tel: (760) 602 5204 Fax: (760) 602 5205