Compare · Simcenter thermal tools
Which Simcenter tool for which thermal problem.
Decision guide first, then two capability matrices — simulation and measurement & reliability. If you know the problem in engineering terms, the guide points to a clear next step.
Decision guide
- System, enclosure, or rack→ Flotherm
- Component or module inside your CAD→ FLOEFD
- Complex 3D enclosure geometry, no rebuild required→ FLOEFD (CAD-native)
- Two-phase, immersion, radiation-dominant, or moving parts→ STAR-CCM+
- I need to predict thermal stress and deformation→ Simcenter 3D Thermal
- Fluid networks and piping systems→ Flomaster
- Cooling loops, HVAC, and battery TMS before CAD exists→ Amesim
- Automated design exploration→ HEEDS
- Die and chiplet junction temperature→ Calibre 3DThermal
- Package architecture and 3D-IC floorplanning→ Innovator3D IC
- Measured Rth / Zth and JEDEC evidence→ Simcenter Micred T3Ster
- Non-destructive die-attach inspection · R&D or lab→ Simcenter Micred T3Ster
- Non-destructive die-attach inspection · production 100% screening→ Simcenter Micred Industrial T3Ster
- I need thermal quality screening at manufacturing speed→ Simcenter Micred Industrial T3Ster
- TIM bond-line performance in your real assembly→ Simcenter Micred DynTIM
- Power-cycling lifetime→ Simcenter Micred Power Tester
Capability matrices
Best-in-classBest-in-class✓Fully supportedFully supported⚠Partial or limitedPartial / limited—Not availableNot available
Simulation tools
| Capability | Flotherm | FLOEFD | STAR-CCM+ | Simcenter 3D Thermal | Amesim | Flomaster | HEEDS | Calibre 3DThermal | Innovator3D IC |
|---|---|---|---|---|---|---|---|---|---|
| System-level electronics CFD | Best-in-class | ✓Fully supported | ✓Fully supported | —Not available | —Not available | —Not available | —Not available | —Not available | —Not available |
| CAD-embedded thermal-flow (NX / Solid Edge / Creo) | —Not available | Best-in-class | —Not available | —Not available | —Not available | —Not available | —Not available | —Not available | —Not available |
| Multiphysics / two-phase / immersion | —Not available | —Not available | Best-in-class | ⚠Partial or limited | —Not available | —Not available | —Not available | —Not available | —Not available |
| Radiation-dominant (space / vacuum) | —Not available | —Not available | ✓Fully supported | Best-in-class | —Not available | —Not available | —Not available | —Not available | —Not available |
| Thermal-structural coupling / stress & deformation | —Not available | —Not available | ✓Fully supported | Best-in-class | —Not available | —Not available | —Not available | —Not available | —Not available |
| 1D fluid networks (loops, HVAC) | —Not available | —Not available | —Not available | —Not available | ✓Fully supported | Best-in-class | —Not available | —Not available | —Not available |
| 1D multi-domain system sim (control-coupled) | —Not available | —Not available | —Not available | —Not available | Best-in-class | ✓Fully supported | —Not available | —Not available | —Not available |
| Automated design exploration / optimization | ✓Fully supported | ✓Fully supported | ✓Fully supported | ✓Fully supported | ✓Fully supported | ✓Fully supported | Best-in-class | —Not available | —Not available |
| Reduced-order thermal models (BCI-ROM) | Best-in-class | —Not available | —Not available | ⚠Partial or limited | —Not available | —Not available | —Not available | —Not available | —Not available |
| 3D IC / chiplet junction temperature | —Not available | —Not available | —Not available | —Not available | —Not available | —Not available | —Not available | Best-in-class | ✓Fully supported |
| Package architecture & floorplanning | —Not available | —Not available | —Not available | —Not available | —Not available | —Not available | —Not available | —Not available | Best-in-class |
Measurement & reliability tools
| Capability | Simcenter Micred T3Ster | Simcenter Micred Power Tester | Simcenter Micred DynTIM | Simcenter Micred Industrial T3Ster |
|---|---|---|---|---|
| Structure-function Rth / Zth measurement (JESD51-14) | Best-in-class | ✓Fully supported | ✓Fully supported | ✓Fully supported |
| Accelerated power cycling (AQG 324 / AEC-Q104) | —Not available | Best-in-class | —Not available | —Not available |
| In-situ TIM characterization (real stack-up) | ✓Fully supported | —Not available | Best-in-class | ⚠Partial or limited |
| Non-destructive die-attach inspection | ✓Fully supported | —Not available | —Not available | Best-in-class |
| Production-line 100% thermal screening | —Not available | —Not available | —Not available | Best-in-class |
| SPC / handler / ATE integration | —Not available | —Not available | —Not available | Best-in-class |
| Compact Thermal Model generation (JESD15-4) | Best-in-class | ✓Fully supported | —Not available | —Not available |
Frequently asked
Answers engineering teams ask before choosing a tool.
- Can I use multiple Simcenter thermal tools together?
- Yes — they are designed to. A typical flow is Amesim for system-architecture decisions, Flomaster for fluid-loop sizing, Flotherm or FLOEFD for 3D electronics detail, STAR-CCM+ where multiphysics or two-phase is needed, Simcenter 3D Thermal for coupled thermal-structural, Calibre 3DThermal and Innovator3D IC for chiplet-scale work, HEEDS for cross-tool optimization, and the Simcenter Micred family (T3Ster, Power Tester, DynTIM, Industrial T3Ster) for measurement, reliability and production-floor validation that feeds back into the models.
- Which tool is best for someone new to thermal simulation?
- FLOEFD if the engineer already lives inside NX, Solid Edge, Creo, CATIA V5 or SolidWorks — no separate meshing step, no geometry rebuild. Flotherm if the work is electronics cooling and the team has (or will have) a dedicated thermal engineer, because SmartParts and the Cartesian solver make electronics workflows fast once learned. Electro Source runs both onboarding paths.
- I currently use Ansys Icepak — why switch?
- Two reasons customers most often cite. First, Flotherm's SmartParts library and JEDEC-compliant package characterization pipeline shorten electronics model build time, and BCI-ROM export lets you ship IP-protected thermal models to downstream customers. Second, the same portfolio also gives you FLOEFD inside CAD for design engineers, HEEDS for cross-tool optimization, and the Micred hardware family — so simulation, measurement and reliability all correlate on a common basis, not across incompatible tools.
- Can STAR-CCM+ replace Flotherm for electronics cooling?
- It can, but usually shouldn't. Flotherm's Cartesian solver, SmartParts library and JEDEC-compliant package workflow are purpose-built for electronics and are faster to iterate for standard electronics-cooling problems. STAR-CCM+ is the right choice when the physics goes beyond that — two-phase immersion, dielectric boiling, radiation-dominant enclosures, rotating machinery, or coupled thermal-structural on the same mesh. Many customers run both.
- What makes Simcenter Micred T3Ster different from other thermal measurement methods?
- 1 µs time resolution and 0.01 °C sensitivity applied to the differential and cumulative structure function, which lets Simcenter Micred T3Ster resolve the thermal stack layer-by-layer non-destructively — die, die-attach, substrate, TIM, heatsink. That is what makes it the reference for JEDEC JESD51-14 Rth_jc extraction and for measurement-validated Compact Thermal Models that feed directly into Flotherm.
- Can Simcenter Micred Power Tester replace traditional power cycling equipment?
- For most modern power-electronics work, yes — and it does more. Simcenter Micred Power Tester runs ΔTj-controlled cycling with in-situ Rth monitoring after every cycle, so degradation is visible as it develops rather than only at end-of-life. That is what AQG 324, AEC-Q101 and AEC-Q104 workflows increasingly expect, and it produces the layer-by-layer failure-precursor data older constant-current rigs cannot.
- How does Simcenter Micred DynTIM differ from ASTM D5470 TIM measurement?
- ASTM D5470 measures a TIM between two idealized flat metal surfaces at controlled pressure and produces the datasheet number. Simcenter Micred DynTIM measures TIM performance dynamically inside the actual assembly stack-up — real surfaces, real pressures, real bond-line thickness. The gap between the two can be 2–5×, which is why simulations built on datasheet TIM numbers frequently fail to match measured reality. Services can still use the ASTM D5470 basis where a specification requires it; DynTIM is for the in-situ answer your product actually sees.
- Can Simcenter Micred Industrial T3Ster replace X-ray and C-SAM for die-attach inspection?
- In many production settings, yes. Simcenter Micred Industrial T3Ster is non-destructive, runs at production speed, and detects die-attach voids, solder defects and TIM failures via structure-function analysis — often catching latent defects that X-ray and C-SAM sampling regimes miss. It also produces SPC-ready data for closed-loop process control. X-ray and C-SAM stay useful for failure analysis and offline root-cause work.
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