Electronics cooling simulation software for accurate and fast analysis of the thermal performance of electronics systems.

Cadence® Celsius™ EC Solver technology1 is designed specifically to enable electronics system designers to quickly and accurately address today’s most challenging thermal/electronics cooling management problems. The Celsius EC Solver utilizes a powerful computational engine and meshing technology that enables designers to model and analyze complex designs to reduce the risks of product failures and optimize thermal solutions to maximize performance.

The Celsius EC Solver analyzes the fluid flow and heat transfer of even the most complex electronics systems. The software solves for convection, conduction, and radiation using a proprietary multi-level unstructured (MLUS) meshing technology. It can analyze airflow, temperature, and heat transfer in electronics assemblies, enclosures, and power electronics for natural convection, forced convection, solar heating, and liquid cooling.

In addition, the solver offers an intuitive user interface with intelligent modeling objects that are automatically placed within the system- level model, providing automatic object-based mesh generation, determining the ideal grid size for a simulation, and automatically checking for collision and modeling errors before solving.

Figure 2: A basic model showing a thermal simulation of a tablet computer. Thermal results displayed show the screen surface and internal component temperatures.

Formerly 6SigmaET by Future Facilities; acquired by Cadence in July 2022.

The first micro-turbojet seen in the historical photo above is 340mm long, 120mm in diameter and weighs 1.7kg. It works with propane gas and produces a thrust force of 40N at 85000 rpm. [Paul D. Marsh. Twenty years of micro-turbojet engines, 2003. RC Universe. http://www.rcuniverse.com/magazine/article display.cfm. article id=166].

PTJ-500 is a unique micro turbojet engine that is being developed within Pars Makina and is being shaped by our own design and philosophy. With a diameter of 15cm, it is intended to have highest thrust generating micro-turbojet in its class. With low fuel consumption and complete combustion, the negative impact on the environment is also minimized.

In addition to low fuel combustion, our technology have a lean fuel / air mixture and a stable combustion, developed after many years of work at Pars Makina. It has also the ability to re-ignite at high altitudes. Fuel flexibility is also available. Other great features of the developed PTJ-500 are long service life and long range compared to competitors.

Figür 1: Celsius EC Solver ile modellenmiş ve simüle edilmiş hava soğutmalı sunucu, sıcak noktaları ve çevredeki hava akışı modelini vurgulamaktadır.

⯈ Addresses thermal/electronics cooling challenges in the earliest stages of a design
⯈ Reduces costly design respins and engineering delays
⯈ Improves product performance and reliability
⯈ Scales to hundreds of cores for addressing high-complexity systems

Intelligent Modeling Objects
Celsius EC Solver models are built using its collection of over 100 intelligent objects designed specifically for electronics devices. These intelligent objects include PCBs, heat sinks, cold plate fans, enclosures, heat pipes, and many other components found in
electronics systems.

CAD and PCB Modeling
The Celsius EC Solver imports complex mechanical computer- aided design (MCAD) models from Creo Parametric, Solidworks, CATIA, and other major MCAD tools. Imported MCAD models can be analyzed without simplification.

PCB designs can also be imported into the solver from all major electrical CAD (ECAD) software programs using the ODB++ or IPC2581 file formats. PCB construction can be modeled in detail and can include conductor layers, vias, and component sizes and positions.

Figure 3: Printed circuit board fully populated with components illustrating the electronics cooling phenomena associated with the inclusion of a heat sink

The software is fast and fits our thermal modeling needs perfectly. Experimental testing in our laboratories has proven that the simulation results predict component temperatures with accuracy.

Norbert Engelberts, Director, OTS BV

Automatic Mesh Generation
The Celsius EC Solver’s object-based meshing feature adapts the mesh to ensure accurate analysis of the device. Rules can be optionally defined, providing meshing guidance to ensure that the individual objects are simulated correctly.

Figure 4: Each intelligent modeling object has its own set of mesh rules. These rules are designed to capture the physics of different object types. For example, a heatsink has finer mesh between its fins to capture the flow.

Powerful Solver and Optimization
The Celsius EC Solver’s parallel processing technology distributes simulation tasks across multiple cores and multiple machines, enabling fast analysis of complex electronics designs in both transient and steady-state simulation modes.

The software efficiently drives design optimization by parameterizing geometry, material properties, power, etc. Any board and component layout can be easily varied for position, size, and orientation to meet a target objective, providing critical information regarding the sensitivity of the thermal results to changes in the design parameters while minimizing the number of simulations.

Automatic Reporting
The Celsius EC Solver reporting functionality is tailored to the needs of electronics designers. The software automatically
creates fully customizable reports, which allow engineers to communicate, compare, and analyze simulation results. The advanced post-processing features enable designers to create high-quality 3D visualizations to pinpoint thermal issues and visualize design improvements.