In this blind test simulation, First International Computer Ltd.,
was evaluating CFD codes for its notebook division. Several vendors
were requested to model a new heat sink design for PII-266 notebook
computers for comparison with experimental data.
The heat sink consisted of an enclosure with air openings, a plate
fin heat sink, a baffle, and an exhaust fan. The case presented
a considerable challenge to CFD codes, as the flow was mixed: laminar
near the inlets, changing to transitional as it left the plate fins
and becoming turbulent as it turned around the baffle and into the
Coolit predicted 70 C temperature rise. The FIC measured temperature
was 69.7 C (0.4% error). Coolit provided by far the most accurate
prediction in this project. The set up time and time to converge
were also the shortest.