Simulation of Passively Cooled PCB

Introduction

Advances in electronics have resulted in a significant increase in the amount of heat generated per unit volume. Properly designed heat transfer reduces the high temperatures of the electronic components, which in turn improves the system safety and reliability. Thermal control has become increasingly important in the design and operation of electronic equipment.

Computer simulation of passively cooled Raspberry Pi.

Heat sink thermal resistance can be estimated from an actual PCB flow patterns and for different air conditions, including temperature variations and humidity. Computer simulations help finding and fixing hotspots achieving up to 80% prototyping cost and time reduction.

Other applications

Liquid Cooling of Electrical Motor
Energy that is not turned into useful work, like turning the rotor, is wasted as heat that needs to be removed. Accumulation of heat leads to high temperatures that can decrease motor efficiency due to increased electrical resistance of the copper windings. In more serious cases overheating causes demagnetization of permanent magnets and dielectric material (Epoxy, Plastics) breakup.

Electrical heater CHT simulation

Air Flow Through Electric Heater
This example shows a reduced model of the domestic heater where constant electric current is passing through the coils with temperature-dependent conductivity. The model consists of boundary conditions imitating air flow through the ventilator and high turbulence flow. Turbulence is important for heat removal from surfaces and it is many times more effective than laminar flow.

Our Expertise

We have developed numerical models capable of simultaneously modeling electromagnetic heat generation and removal. Sources include electrical resistance, induction and microwave.  Heat transfer is achieved through convective, conductive and radiative mechanisms.

Simulation Tools & Services

Licensed simulation software for electromagnetics and fluid dynamics, including the best open-source software packages Elmer FEM and OpenFOAM.. Verified models for industrial and academic applications.

We use Cloud computing as a resource that is secure, reliable and cost-effective. Service providers such as Amazon Web Services (AWS) are offering their spare capacity; high-availability computer power allows us testing hundreds of virtual prototypes at once.