November 2001

The initial CAD model was designed with empirical data and intuition. The complex geometry of the enclosure and heat sink was then imported into Flotherm via Flo/MCAD, the automated simplification module available for Flotherm. Analysis showed that certain areas of the heat sink were not properly ventilated, leading to poor heat transfer in these particular areas. Designers were able to use the airflow data to optimise the curvature of the fins. A subsequent Flotherm analysis showed a smooth airflow between the fins, a better fan placement, and lower temperatures of the internal components, validating Ascom's initial confidence in its design.

Commenting on the project Anton Sommer, CTO, Ascom Energy Systems, said, "Flotherm enabled us to perfect the curvature of our space-saving heat sink without building many prototypes. The Flotherm software produced results that enabled us to put the piece into production sooner, at lower cost and with a greater degree of confidence in its final performance."