Electronics Cooling

Fluid and Thermal Modeling for Electronic Design

SINDA/FLUINT has been widely used for thermal modeling of electronics in the aerospace industry for decades. FloCAD® differentiates our product from other network style solvers by expanding the applicability of the code to ground-based electronics with convective environments, liquid cooling, and two-phase cooling loops (including refrigeration, thermosiphons, and immersion cooling). The geometric interface of Thermal Desktop® provides 3D CAD methods for simulating air cooling and thermal behavior of electronic enclosures, PC boards, heat sinks, and electronic racks.

Our suite of tools provides the unique ability to perform integrated thermohydraulic modeling of enclosures, capturing both the thermal and fluid aspects of mass and heat transfer. The user-friendly interface provides the designer the ability to quickly model a system yet provides the flexibility to easily perform sensitivity parametrics, optimization, and other high level operations related to sizing and reliability estimation.

Immersion-cooled Electronics

You have the ability to model fans, pumps, ducts, valves, filters, and other miscellaneous loss elements. Fluids may be selected from the built in property data base or the user may specify his/her own fluid properties. The most common choices for air cooled electronics include dry and moist air (including condensation and other psychometric effects), and for coolant loop fluids choices include water, water-glycol, PAO, 3M's NOVEC® fluids, etc. Even two-phase systems such as vapor compression cycle refrigeration systems can be modeled quickly and reliably.

Highlights of capabilities

  • An inexpensive fast-to-model and fast-to-solve alternative to CFD for air-cooled electronics
  • Fully parametric for easy model changes
  • The only piping network code for coolant loops and heat pipes that lets you lay out 1D lines within 3D thermal/structural geometry
  • Best-of-class design and analysis software for vapor compression refrigeration cycles and other two-phase systems such as spray cooling loops, immersion cooling systems, heat pipes, loop heat pipes, and thermosyphons
  • Best-of-class CAD-based and FEM-compatible thermal radiation, conduction, and contact resistance modeling tools
  • Advanced analysis methods for sizing/optimization, automated model calibration to test data, and statistical design including tolerancing and reliability studies

Sample Model

For more information:

flow regimes

Introduction to Two-phase Flow

September 24, 2-3pm MDT

This webinar introduces basic concepts in two-phase flow modeling including quality, void fraction, flow regimes, slip flow, pressure drops and accelerations, and heat transfer.

No knowledge of CRTech software is required. However, references to the corresponding FloCAD features will be made to assist users of that product.

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Introductory FloCAD Training

Class times: September 5, 10, and 12, 2019, 9:00 am to 12:00 pm MDT daily
Cost: no charge (attendees must have an active support contract)

CRTech will be hosting introductory training for FloCAD (Flow Modeling in Thermal Desktop). This is our standard FloCAD class previously hosted in a classroom environment and now restructured for an online teaching environment.

The class will introduce single-phase fluid modeling concepts and how to build fluid models within the FloCAD work environment. Topics covered include an introduction to fluid modeling components, geometric versus non-geometric modeling options, working with FloCAD Pipes, solution control, and an introduction to path and pipe libraries.

The class will be broken into three two- to three-hour sessions held over a 3 day period. The format will be online lecture and demonstration with opportunities to ask questions. Hands-on lab work will be provided to students to work on after each session. To gain the most from this class, students are encouraged to attend all three sessions.

Prerequisites: Attendees must have basic working knowledge of Thermal Desktop as many of its base features will not be covered in this class but their usage is required for FloCAD.

Eligibility Requirement: This class is a service to our customers. All attendees must have an active support contract. If you are unsure of your support status, please contact CRTech.

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